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Sheikah
2023-01-19 00:11:51 +08:00
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16
Drivers/CMSIS/DSP/Source/SupportFunctions/CMakeLists.txt Normal file
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cmake_minimum_required (VERSION 3.6)
project(CMSISDSPSupport)
file(GLOB SRC "./*_*.c")
add_library(CMSISDSPSupport STATIC ${SRC})
configdsp(CMSISDSPSupport ..)
### Includes
target_include_directories(CMSISDSPSupport PUBLIC "${DSP}/../../Include")

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Drivers/CMSIS/DSP/Source/SupportFunctions/SupportFunctions.c Normal file
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/* ----------------------------------------------------------------------
* Project: CMSIS DSP Library
* Title: SupportFunctions.c
* Description: Combination of all support function source files.
*
* $Date: 18. March 2019
* $Revision: V1.0.0
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2019 ARM Limited or its affiliates. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "arm_copy_f32.c"
#include "arm_copy_q15.c"
#include "arm_copy_q31.c"
#include "arm_copy_q7.c"
#include "arm_fill_f32.c"
#include "arm_fill_q15.c"
#include "arm_fill_q31.c"
#include "arm_fill_q7.c"
#include "arm_float_to_q15.c"
#include "arm_float_to_q31.c"
#include "arm_float_to_q7.c"
#include "arm_q15_to_float.c"
#include "arm_q15_to_q31.c"
#include "arm_q15_to_q7.c"
#include "arm_q31_to_float.c"
#include "arm_q31_to_q15.c"
#include "arm_q31_to_q7.c"
#include "arm_q7_to_float.c"
#include "arm_q7_to_q15.c"
#include "arm_q7_to_q31.c"

152
Drivers/CMSIS/DSP/Source/SupportFunctions/arm_copy_f32.c Normal file
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/* ----------------------------------------------------------------------
* Project: CMSIS DSP Library
* Title: arm_copy_f32.c
* Description: Copies the elements of a floating-point vector
*
* $Date: 18. March 2019
* $Revision: V1.6.0
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "arm_math.h"
/**
@ingroup groupSupport
*/
/**
@defgroup copy Vector Copy
Copies sample by sample from source vector to destination vector.
<pre>
pDst[n] = pSrc[n]; 0 <= n < blockSize.
</pre>
There are separate functions for floating point, Q31, Q15, and Q7 data types.
*/
/**
@addtogroup copy
@{
*/
/**
@brief Copies the elements of a floating-point vector.
@param[in] pSrc points to input vector
@param[out] pDst points to output vector
@param[in] blockSize number of samples in each vector
@return none
*/
#if defined(ARM_MATH_NEON_EXPERIMENTAL)
void arm_copy_f32(
const float32_t * pSrc,
float32_t * pDst,
uint32_t blockSize)
{
uint32_t blkCnt; /* loop counter */
float32x4_t inV;
blkCnt = blockSize >> 2U;
/* Compute 4 outputs at a time.
** a second loop below computes the remaining 1 to 3 samples. */
while (blkCnt > 0U)
{
/* C = A */
/* Copy and then store the results in the destination buffer */
inV = vld1q_f32(pSrc);
vst1q_f32(pDst, inV);
pSrc += 4;
pDst += 4;
/* Decrement the loop counter */
blkCnt--;
}
/* If the blockSize is not a multiple of 4, compute any remaining output samples here.
** No loop unrolling is used. */
blkCnt = blockSize & 3;
while (blkCnt > 0U)
{
/* C = A */
/* Copy and then store the results in the destination buffer */
*pDst++ = *pSrc++;
/* Decrement the loop counter */
blkCnt--;
}
}
#else
void arm_copy_f32(
const float32_t * pSrc,
float32_t * pDst,
uint32_t blockSize)
{
uint32_t blkCnt; /* Loop counter */
#if defined (ARM_MATH_LOOPUNROLL)
/* Loop unrolling: Compute 4 outputs at a time */
blkCnt = blockSize >> 2U;
while (blkCnt > 0U)
{
/* C = A */
/* Copy and store result in destination buffer */
*pDst++ = *pSrc++;
*pDst++ = *pSrc++;
*pDst++ = *pSrc++;
*pDst++ = *pSrc++;
/* Decrement loop counter */
blkCnt--;
}
/* Loop unrolling: Compute remaining outputs */
blkCnt = blockSize % 0x4U;
#else
/* Initialize blkCnt with number of samples */
blkCnt = blockSize;
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
while (blkCnt > 0U)
{
/* C = A */
/* Copy and store result in destination buffer */
*pDst++ = *pSrc++;
/* Decrement loop counter */
blkCnt--;
}
}
#endif /* #if defined(ARM_MATH_NEON) */
/**
@} end of BasicCopy group
*/

96
Drivers/CMSIS/DSP/Source/SupportFunctions/arm_copy_q15.c Normal file
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/* ----------------------------------------------------------------------
* Project: CMSIS DSP Library
* Title: arm_copy_q15.c
* Description: Copies the elements of a Q15 vector
*
* $Date: 18. March 2019
* $Revision: V1.6.0
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "arm_math.h"
/**
@ingroup groupSupport
*/
/**
@addtogroup copy
@{
*/
/**
@brief Copies the elements of a Q15 vector.
@param[in] pSrc points to input vector
@param[out] pDst points to output vector
@param[in] blockSize number of samples in each vector
@return none
*/
void arm_copy_q15(
const q15_t * pSrc,
q15_t * pDst,
uint32_t blockSize)
{
uint32_t blkCnt; /* Loop counter */
#if defined (ARM_MATH_LOOPUNROLL)
/* Loop unrolling: Compute 4 outputs at a time */
blkCnt = blockSize >> 2U;
while (blkCnt > 0U)
{
/* C = A */
/* read 2 times 2 samples at a time */
write_q15x2_ia (&pDst, read_q15x2_ia ((q15_t **) &pSrc));
write_q15x2_ia (&pDst, read_q15x2_ia ((q15_t **) &pSrc));
/* Decrement loop counter */
blkCnt--;
}
/* Loop unrolling: Compute remaining outputs */
blkCnt = blockSize % 0x4U;
#else
/* Initialize blkCnt with number of samples */
blkCnt = blockSize;
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
while (blkCnt > 0U)
{
/* C = A */
/* Copy and store result in destination buffer */
*pDst++ = *pSrc++;
/* Decrement loop counter */
blkCnt--;
}
}
/**
@} end of BasicCopy group
*/

98
Drivers/CMSIS/DSP/Source/SupportFunctions/arm_copy_q31.c Normal file
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/* ----------------------------------------------------------------------
* Project: CMSIS DSP Library
* Title: arm_copy_q31.c
* Description: Copies the elements of a Q31 vector
*
* $Date: 18. March 2019
* $Revision: V1.6.0
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "arm_math.h"
/**
@ingroup groupSupport
*/
/**
@addtogroup copy
@{
*/
/**
@brief Copies the elements of a Q31 vector.
@param[in] pSrc points to input vector
@param[out] pDst points to output vector
@param[in] blockSize number of samples in each vector
@return none
*/
void arm_copy_q31(
const q31_t * pSrc,
q31_t * pDst,
uint32_t blockSize)
{
uint32_t blkCnt; /* Loop counter */
#if defined (ARM_MATH_LOOPUNROLL)
/* Loop unrolling: Compute 4 outputs at a time */
blkCnt = blockSize >> 2U;
while (blkCnt > 0U)
{
/* C = A */
/* Copy and store result in destination buffer */
*pDst++ = *pSrc++;
*pDst++ = *pSrc++;
*pDst++ = *pSrc++;
*pDst++ = *pSrc++;
/* Decrement loop counter */
blkCnt--;
}
/* Loop unrolling: Compute remaining outputs */
blkCnt = blockSize % 0x4U;
#else
/* Initialize blkCnt with number of samples */
blkCnt = blockSize;
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
while (blkCnt > 0U)
{
/* C = A */
/* Copy and store result in destination buffer */
*pDst++ = *pSrc++;
/* Decrement loop counter */
blkCnt--;
}
}
/**
@} end of BasicCopy group
*/

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Drivers/CMSIS/DSP/Source/SupportFunctions/arm_copy_q7.c Normal file
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/* ----------------------------------------------------------------------
* Project: CMSIS DSP Library
* Title: arm_copy_q7.c
* Description: Copies the elements of a Q7 vector
*
* $Date: 18. March 2019
* $Revision: V1.6.0
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "arm_math.h"
/**
@ingroup groupSupport
*/
/**
@addtogroup copy
@{
*/
/**
@brief Copies the elements of a Q7 vector.
@param[in] pSrc points to input vector
@param[out] pDst points to output vector
@param[in] blockSize number of samples in each vector
@return none
*/
void arm_copy_q7(
const q7_t * pSrc,
q7_t * pDst,
uint32_t blockSize)
{
uint32_t blkCnt; /* Loop counter */
#if defined (ARM_MATH_LOOPUNROLL)
/* Loop unrolling: Compute 4 outputs at a time */
blkCnt = blockSize >> 2U;
while (blkCnt > 0U)
{
/* C = A */
/* read 4 samples at a time */
write_q7x4_ia (&pDst, read_q7x4_ia ((q7_t **) &pSrc));
/* Decrement loop counter */
blkCnt--;
}
/* Loop unrolling: Compute remaining outputs */
blkCnt = blockSize % 0x4U;
#else
/* Initialize blkCnt with number of samples */
blkCnt = blockSize;
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
while (blkCnt > 0U)
{
/* C = A */
/* Copy and store result in destination buffer */
*pDst++ = *pSrc++;
/* Decrement loop counter */
blkCnt--;
}
}
/**
@} end of BasicCopy group
*/

151
Drivers/CMSIS/DSP/Source/SupportFunctions/arm_fill_f32.c Normal file
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/* ----------------------------------------------------------------------
* Project: CMSIS DSP Library
* Title: arm_fill_f32.c
* Description: Fills a constant value into a floating-point vector
*
* $Date: 18. March 2019
* $Revision: V1.6.0
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "arm_math.h"
/**
@ingroup groupSupport
*/
/**
@defgroup Fill Vector Fill
Fills the destination vector with a constant value.
<pre>
pDst[n] = value; 0 <= n < blockSize.
</pre>
There are separate functions for floating point, Q31, Q15, and Q7 data types.
*/
/**
@addtogroup Fill
@{
*/
/**
@brief Fills a constant value into a floating-point vector.
@param[in] value input value to be filled
@param[out] pDst points to output vector
@param[in] blockSize number of samples in each vector
@return none
*/
#if defined(ARM_MATH_NEON_EXPERIMENTAL)
void arm_fill_f32(
float32_t value,
float32_t * pDst,
uint32_t blockSize)
{
uint32_t blkCnt; /* loop counter */
float32x4_t inV = vdupq_n_f32(value);
blkCnt = blockSize >> 2U;
/* Compute 4 outputs at a time.
** a second loop below computes the remaining 1 to 3 samples. */
while (blkCnt > 0U)
{
/* C = value */
/* Fill the value in the destination buffer */
vst1q_f32(pDst, inV);
pDst += 4;
/* Decrement the loop counter */
blkCnt--;
}
/* If the blockSize is not a multiple of 4, compute any remaining output samples here.
** No loop unrolling is used. */
blkCnt = blockSize & 3;
while (blkCnt > 0U)
{
/* C = value */
/* Fill the value in the destination buffer */
*pDst++ = value;
/* Decrement the loop counter */
blkCnt--;
}
}
#else
void arm_fill_f32(
float32_t value,
float32_t * pDst,
uint32_t blockSize)
{
uint32_t blkCnt; /* Loop counter */
#if defined (ARM_MATH_LOOPUNROLL)
/* Loop unrolling: Compute 4 outputs at a time */
blkCnt = blockSize >> 2U;
while (blkCnt > 0U)
{
/* C = value */
/* Fill value in destination buffer */
*pDst++ = value;
*pDst++ = value;
*pDst++ = value;
*pDst++ = value;
/* Decrement loop counter */
blkCnt--;
}
/* Loop unrolling: Compute remaining outputs */
blkCnt = blockSize % 0x4U;
#else
/* Initialize blkCnt with number of samples */
blkCnt = blockSize;
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
while (blkCnt > 0U)
{
/* C = value */
/* Fill value in destination buffer */
*pDst++ = value;
/* Decrement loop counter */
blkCnt--;
}
}
#endif /* #if defined(ARM_MATH_NEON) */
/**
@} end of Fill group
*/

100
Drivers/CMSIS/DSP/Source/SupportFunctions/arm_fill_q15.c Normal file
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/* ----------------------------------------------------------------------
* Project: CMSIS DSP Library
* Title: arm_fill_q15.c
* Description: Fills a constant value into a Q15 vector
*
* $Date: 18. March 2019
* $Revision: V1.6.0
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "arm_math.h"
/**
@ingroup groupSupport
*/
/**
@addtogroup Fill
@{
*/
/**
@brief Fills a constant value into a Q15 vector.
@param[in] value input value to be filled
@param[out] pDst points to output vector
@param[in] blockSize number of samples in each vector
@return none
*/
void arm_fill_q15(
q15_t value,
q15_t * pDst,
uint32_t blockSize)
{
uint32_t blkCnt; /* Loop counter */
#if defined (ARM_MATH_LOOPUNROLL)
q31_t packedValue; /* value packed to 32 bits */
/* Packing two 16 bit values to 32 bit value in order to use SIMD */
packedValue = __PKHBT(value, value, 16U);
/* Loop unrolling: Compute 4 outputs at a time */
blkCnt = blockSize >> 2U;
while (blkCnt > 0U)
{
/* C = value */
/* fill 2 times 2 samples at a time */
write_q15x2_ia (&pDst, packedValue);
write_q15x2_ia (&pDst, packedValue);
/* Decrement loop counter */
blkCnt--;
}
/* Loop unrolling: Compute remaining outputs */
blkCnt = blockSize % 0x4U;
#else
/* Initialize blkCnt with number of samples */
blkCnt = blockSize;
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
while (blkCnt > 0U)
{
/* C = value */
/* Fill value in destination buffer */
*pDst++ = value;
/* Decrement loop counter */
blkCnt--;
}
}
/**
@} end of Fill group
*/

98
Drivers/CMSIS/DSP/Source/SupportFunctions/arm_fill_q31.c Normal file
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/* ----------------------------------------------------------------------
* Project: CMSIS DSP Library
* Title: arm_fill_q31.c
* Description: Fills a constant value into a Q31 vector
*
* $Date: 18. March 2019
* $Revision: V1.6.0
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "arm_math.h"
/**
@ingroup groupSupport
*/
/**
@addtogroup Fill
@{
*/
/**
@brief Fills a constant value into a Q31 vector.
@param[in] value input value to be filled
@param[out] pDst points to output vector
@param[in] blockSize number of samples in each vector
@return none
*/
void arm_fill_q31(
q31_t value,
q31_t * pDst,
uint32_t blockSize)
{
uint32_t blkCnt; /* Loop counter */
#if defined (ARM_MATH_LOOPUNROLL)
/* Loop unrolling: Compute 4 outputs at a time */
blkCnt = blockSize >> 2U;
while (blkCnt > 0U)
{
/* C = value */
/* Fill value in destination buffer */
*pDst++ = value;
*pDst++ = value;
*pDst++ = value;
*pDst++ = value;
/* Decrement loop counter */
blkCnt--;
}
/* Loop unrolling: Compute remaining outputs */
blkCnt = blockSize % 0x4U;
#else
/* Initialize blkCnt with number of samples */
blkCnt = blockSize;
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
while (blkCnt > 0U)
{
/* C = value */
/* Fill value in destination buffer */
*pDst++ = value;
/* Decrement loop counter */
blkCnt--;
}
}
/**
@} end of Fill group
*/

99
Drivers/CMSIS/DSP/Source/SupportFunctions/arm_fill_q7.c Normal file
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/* ----------------------------------------------------------------------
* Project: CMSIS DSP Library
* Title: arm_fill_q7.c
* Description: Fills a constant value into a Q7 vector
*
* $Date: 18. March 2019
* $Revision: V1.6.0
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "arm_math.h"
/**
@ingroup groupSupport
*/
/**
@addtogroup Fill
@{
*/
/**
@brief Fills a constant value into a Q7 vector.
@param[in] value input value to be filled
@param[out] pDst points to output vector
@param[in] blockSize number of samples in each vector
@return none
*/
void arm_fill_q7(
q7_t value,
q7_t * pDst,
uint32_t blockSize)
{
uint32_t blkCnt; /* Loop counter */
#if defined (ARM_MATH_LOOPUNROLL)
q31_t packedValue; /* value packed to 32 bits */
/* Packing four 8 bit values to 32 bit value in order to use SIMD */
packedValue = __PACKq7(value, value, value, value);
/* Loop unrolling: Compute 4 outputs at a time */
blkCnt = blockSize >> 2U;
while (blkCnt > 0U)
{
/* C = value */
/* fill 4 samples at a time */
write_q7x4_ia (&pDst, packedValue);
/* Decrement loop counter */
blkCnt--;
}
/* Loop unrolling: Compute remaining outputs */
blkCnt = blockSize % 0x4U;
#else
/* Initialize blkCnt with number of samples */
blkCnt = blockSize;
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
while (blkCnt > 0U)
{
/* C = value */
/* Fill value in destination buffer */
*pDst++ = value;
/* Decrement loop counter */
blkCnt--;
}
}
/**
@} end of Fill group
*/

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Drivers/CMSIS/DSP/Source/SupportFunctions/arm_float_to_q15.c Normal file
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/* ----------------------------------------------------------------------
* Project: CMSIS DSP Library
* Title: arm_float_to_q15.c
* Description: Converts the elements of the floating-point vector to Q15 vector
*
* $Date: 18. March 2019
* $Revision: V1.6.0
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "arm_math.h"
/**
@ingroup groupSupport
*/
/**
@addtogroup float_to_x
@{
*/
/**
@brief Converts the elements of the floating-point vector to Q15 vector.
@param[in] pSrc points to the floating-point input vector
@param[out] pDst points to the Q15 output vector
@param[in] blockSize number of samples in each vector
@return none
@par Details
The equation used for the conversion process is:
<pre>
pDst[n] = (q15_t)(pSrc[n] * 32768); 0 <= n < blockSize.
</pre>
@par Scaling and Overflow Behavior
The function uses saturating arithmetic.
Results outside of the allowable Q15 range [0x8000 0x7FFF] are saturated.
@note
In order to apply rounding, the library should be rebuilt with the ROUNDING macro
defined in the preprocessor section of project options.
*/
#if defined(ARM_MATH_NEON_EXPERIMENTAL)
void arm_float_to_q15(
const float32_t * pSrc,
q15_t * pDst,
uint32_t blockSize)
{
const float32_t *pIn = pSrc; /* Src pointer */
uint32_t blkCnt; /* loop counter */
float32_t in;
float32x4_t inV;
#ifdef ARM_MATH_ROUNDING
float32x4_t zeroV = vdupq_n_f32(0.0f);
float32x4_t pHalf = vdupq_n_f32(0.5f / 32768.0f);
float32x4_t mHalf = vdupq_n_f32(-0.5f / 32768.0f);
float32x4_t r;
uint32x4_t cmp;
#endif
int32x4_t cvt;
int16x4_t outV;
blkCnt = blockSize >> 2U;
/* Compute 4 outputs at a time.
** a second loop below computes the remaining 1 to 3 samples. */
while (blkCnt > 0U)
{
#ifdef ARM_MATH_ROUNDING
/* C = A * 32768 */
/* Convert from float to q15 and then store the results in the destination buffer */
inV = vld1q_f32(pIn);
cmp = vcgtq_f32(inV,zeroV);
r = vbslq_f32(cmp,pHalf,mHalf);
inV = vaddq_f32(inV, r);
pIn += 4;
cvt = vcvtq_n_s32_f32(inV,15);
outV = vqmovn_s32(cvt);
vst1_s16(pDst, outV);
pDst += 4;
#else
/* C = A * 32768 */
/* Convert from float to q15 and then store the results in the destination buffer */
inV = vld1q_f32(pIn);
cvt = vcvtq_n_s32_f32(inV,15);
outV = vqmovn_s32(cvt);
vst1_s16(pDst, outV);
pDst += 4;
pIn += 4;
#endif /* #ifdef ARM_MATH_ROUNDING */
/* Decrement the loop counter */
blkCnt--;
}
/* If the blockSize is not a multiple of 4, compute any remaining output samples here.
** No loop unrolling is used. */
blkCnt = blockSize & 3;
while (blkCnt > 0U)
{
#ifdef ARM_MATH_ROUNDING
/* C = A * 32768 */
/* Convert from float to q15 and then store the results in the destination buffer */
in = *pIn++;
in = (in * 32768.0f);
in += in > 0.0f ? 0.5f : -0.5f;
*pDst++ = (q15_t) (__SSAT((q31_t) (in), 16));
#else
/* C = A * 32768 */
/* Convert from float to q15 and then store the results in the destination buffer */
*pDst++ = (q15_t) __SSAT((q31_t) (*pIn++ * 32768.0f), 16);
#endif /* #ifdef ARM_MATH_ROUNDING */
/* Decrement the loop counter */
blkCnt--;
}
}
#else
void arm_float_to_q15(
const float32_t * pSrc,
q15_t * pDst,
uint32_t blockSize)
{
uint32_t blkCnt; /* Loop counter */
const float32_t *pIn = pSrc; /* Source pointer */
#ifdef ARM_MATH_ROUNDING
float32_t in;
#endif /* #ifdef ARM_MATH_ROUNDING */
#if defined (ARM_MATH_LOOPUNROLL)
/* Loop unrolling: Compute 4 outputs at a time */
blkCnt = blockSize >> 2U;
while (blkCnt > 0U)
{
/* C = A * 32768 */
/* convert from float to Q15 and store result in destination buffer */
#ifdef ARM_MATH_ROUNDING
in = (*pIn++ * 32768.0f);
in += in > 0.0f ? 0.5f : -0.5f;
*pDst++ = (q15_t) (__SSAT((q31_t) (in), 16));
in = (*pIn++ * 32768.0f);
in += in > 0.0f ? 0.5f : -0.5f;
*pDst++ = (q15_t) (__SSAT((q31_t) (in), 16));
in = (*pIn++ * 32768.0f);
in += in > 0.0f ? 0.5f : -0.5f;
*pDst++ = (q15_t) (__SSAT((q31_t) (in), 16));
in = (*pIn++ * 32768.0f);
in += in > 0.0f ? 0.5f : -0.5f;
*pDst++ = (q15_t) (__SSAT((q31_t) (in), 16));
#else
*pDst++ = (q15_t) __SSAT((q31_t) (*pIn++ * 32768.0f), 16);
*pDst++ = (q15_t) __SSAT((q31_t) (*pIn++ * 32768.0f), 16);
*pDst++ = (q15_t) __SSAT((q31_t) (*pIn++ * 32768.0f), 16);
*pDst++ = (q15_t) __SSAT((q31_t) (*pIn++ * 32768.0f), 16);
#endif /* #ifdef ARM_MATH_ROUNDING */
/* Decrement loop counter */
blkCnt--;
}
/* Loop unrolling: Compute remaining outputs */
blkCnt = blockSize % 0x4U;
#else
/* Initialize blkCnt with number of samples */
blkCnt = blockSize;
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
while (blkCnt > 0U)
{
/* C = A * 32768 */
/* convert from float to Q15 and store result in destination buffer */
#ifdef ARM_MATH_ROUNDING
in = (*pIn++ * 32768.0f);
in += in > 0.0f ? 0.5f : -0.5f;
*pDst++ = (q15_t) (__SSAT((q31_t) (in), 16));
#else
/* C = A * 32768 */
/* Convert from float to q15 and then store the results in the destination buffer */
*pDst++ = (q15_t) __SSAT((q31_t) (*pIn++ * 32768.0f), 16);
#endif /* #ifdef ARM_MATH_ROUNDING */
/* Decrement loop counter */
blkCnt--;
}
}
#endif /* #if defined(ARM_MATH_NEON) */
/**
@} end of float_to_x group
*/

252
Drivers/CMSIS/DSP/Source/SupportFunctions/arm_float_to_q31.c Normal file
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/* ----------------------------------------------------------------------
* Project: CMSIS DSP Library
* Title: arm_float_to_q31.c
* Description: Converts the elements of the floating-point vector to Q31 vector
*
* $Date: 18. March 2019
* $Revision: V1.6.0
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "arm_math.h"
/**
@ingroup groupSupport
*/
/**
* @defgroup float_to_x Convert 32-bit floating point value
*/
/**
@addtogroup float_to_x
@{
*/
/**
@brief Converts the elements of the floating-point vector to Q31 vector.
@param[in] pSrc points to the floating-point input vector
@param[out] pDst points to the Q31 output vector
@param[in] blockSize number of samples in each vector
@return none
@par Details
The equation used for the conversion process is:
<pre>
pDst[n] = (q31_t)(pSrc[n] * 2147483648); 0 <= n < blockSize.
</pre>
@par Scaling and Overflow Behavior
The function uses saturating arithmetic.
Results outside of the allowable Q31 range[0x80000000 0x7FFFFFFF] are saturated.
@note
In order to apply rounding, the library should be rebuilt with the ROUNDING macro
defined in the preprocessor section of project options.
*/
#if defined(ARM_MATH_NEON)
void arm_float_to_q31(
const float32_t * pSrc,
q31_t * pDst,
uint32_t blockSize)
{
const float32_t *pIn = pSrc; /* Src pointer */
uint32_t blkCnt; /* loop counter */
float32_t in;
float32x4_t inV;
#ifdef ARM_MATH_ROUNDING
float32x4_t zeroV = vdupq_n_f32(0.0f);
float32x4_t pHalf = vdupq_n_f32(0.5f / 2147483648.0f);
float32x4_t mHalf = vdupq_n_f32(-0.5f / 2147483648.0f);
float32x4_t r;
uint32x4_t cmp;
#endif
int32x4_t outV;
blkCnt = blockSize >> 2U;
/* Compute 4 outputs at a time.
** a second loop below computes the remaining 1 to 3 samples. */
while (blkCnt > 0U)
{
#ifdef ARM_MATH_ROUNDING
/* C = A * 32768 */
/* Convert from float to Q31 and then store the results in the destination buffer */
inV = vld1q_f32(pIn);
cmp = vcgtq_f32(inV,zeroV);
r = vbslq_f32(cmp,pHalf,mHalf);
inV = vaddq_f32(inV, r);
pIn += 4;
outV = vcvtq_n_s32_f32(inV,31);
vst1q_s32(pDst, outV);
pDst += 4;
#else
/* C = A * 2147483648 */
/* Convert from float to Q31 and then store the results in the destination buffer */
inV = vld1q_f32(pIn);
outV = vcvtq_n_s32_f32(inV,31);
vst1q_s32(pDst, outV);
pDst += 4;
pIn += 4;
#endif /* #ifdef ARM_MATH_ROUNDING */
/* Decrement the loop counter */
blkCnt--;
}
/* If the blockSize is not a multiple of 4, compute any remaining output samples here.
** No loop unrolling is used. */
blkCnt = blockSize & 3;
while (blkCnt > 0U)
{
#ifdef ARM_MATH_ROUNDING
/* C = A * 2147483648 */
/* Convert from float to Q31 and then store the results in the destination buffer */
in = *pIn++;
in = (in * 2147483648.0f);
in += in > 0.0f ? 0.5f : -0.5f;
*pDst++ = clip_q63_to_q31((q63_t) (in));
#else
/* C = A * 2147483648 */
/* Convert from float to Q31 and then store the results in the destination buffer */
*pDst++ = clip_q63_to_q31((q63_t) (*pIn++ * 2147483648.0f));
#endif /* #ifdef ARM_MATH_ROUNDING */
/* Decrement the loop counter */
blkCnt--;
}
}
#else
void arm_float_to_q31(
const float32_t * pSrc,
q31_t * pDst,
uint32_t blockSize)
{
uint32_t blkCnt; /* Loop counter */
const float32_t *pIn = pSrc; /* Source pointer */
#ifdef ARM_MATH_ROUNDING
float32_t in;
#endif /* #ifdef ARM_MATH_ROUNDING */
#if defined (ARM_MATH_LOOPUNROLL)
/* Loop unrolling: Compute 4 outputs at a time */
blkCnt = blockSize >> 2U;
while (blkCnt > 0U)
{
/* C = A * 2147483648 */
/* convert from float to Q31 and store result in destination buffer */
#ifdef ARM_MATH_ROUNDING
in = (*pIn++ * 2147483648.0f);
in += in > 0.0f ? 0.5f : -0.5f;
*pDst++ = clip_q63_to_q31((q63_t) (in));
in = (*pIn++ * 2147483648.0f);
in += in > 0.0f ? 0.5f : -0.5f;
*pDst++ = clip_q63_to_q31((q63_t) (in));
in = (*pIn++ * 2147483648.0f);
in += in > 0.0f ? 0.5f : -0.5f;
*pDst++ = clip_q63_to_q31((q63_t) (in));
in = (*pIn++ * 2147483648.0f);
in += in > 0.0f ? 0.5f : -0.5f;
*pDst++ = clip_q63_to_q31((q63_t) (in));
#else
/* C = A * 2147483648 */
/* Convert from float to Q31 and then store the results in the destination buffer */
*pDst++ = clip_q63_to_q31((q63_t) (*pIn++ * 2147483648.0f));
*pDst++ = clip_q63_to_q31((q63_t) (*pIn++ * 2147483648.0f));
*pDst++ = clip_q63_to_q31((q63_t) (*pIn++ * 2147483648.0f));
*pDst++ = clip_q63_to_q31((q63_t) (*pIn++ * 2147483648.0f));
#endif /* #ifdef ARM_MATH_ROUNDING */
/* Decrement loop counter */
blkCnt--;
}
/* Loop unrolling: Compute remaining outputs */
blkCnt = blockSize % 0x4U;
#else
/* Initialize blkCnt with number of samples */
blkCnt = blockSize;
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
while (blkCnt > 0U)
{
/* C = A * 2147483648 */
/* convert from float to Q31 and store result in destination buffer */
#ifdef ARM_MATH_ROUNDING
in = (*pIn++ * 2147483648.0f);
in += in > 0.0f ? 0.5f : -0.5f;
*pDst++ = clip_q63_to_q31((q63_t) (in));
#else
/* C = A * 2147483648 */
/* Convert from float to Q31 and then store the results in the destination buffer */
*pDst++ = clip_q63_to_q31((q63_t) (*pIn++ * 2147483648.0f));
#endif /* #ifdef ARM_MATH_ROUNDING */
/* Decrement loop counter */
blkCnt--;
}
}
#endif /* #if defined(ARM_MATH_NEON) */
/**
@} end of float_to_x group
*/

253
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/* ----------------------------------------------------------------------
* Project: CMSIS DSP Library
* Title: arm_float_to_q7.c
* Description: Converts the elements of the floating-point vector to Q7 vector
*
* $Date: 18. March 2019
* $Revision: V1.6.0
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "arm_math.h"
/**
@ingroup groupSupport
*/
/**
@addtogroup float_to_x
@{
*/
/**
* @brief Converts the elements of the floating-point vector to Q7 vector.
* @param[in] *pSrc points to the floating-point input vector
* @param[out] *pDst points to the Q7 output vector
* @param[in] blockSize length of the input vector
* @return none.
*
*\par Description:
* \par
* The equation used for the conversion process is:
* <pre>
* pDst[n] = (q7_t)(pSrc[n] * 128); 0 <= n < blockSize.
* </pre>
* \par Scaling and Overflow Behavior:
* \par
* The function uses saturating arithmetic.
* Results outside of the allowable Q7 range [0x80 0x7F] will be saturated.
* \note
* In order to apply rounding, the library should be rebuilt with the ROUNDING macro
* defined in the preprocessor section of project options.
*/
#if defined(ARM_MATH_NEON)
void arm_float_to_q7(
const float32_t * pSrc,
q7_t * pDst,
uint32_t blockSize)
{
const float32_t *pIn = pSrc; /* Src pointer */
uint32_t blkCnt; /* loop counter */
float32_t in;
float32x4_t inV;
#ifdef ARM_MATH_ROUNDING
float32x4_t zeroV = vdupq_n_f32(0.0f);
float32x4_t pHalf = vdupq_n_f32(0.5f / 128.0f);
float32x4_t mHalf = vdupq_n_f32(-0.5f / 128.0f);
float32x4_t r;
uint32x4_t cmp;
#endif
int32x4_t cvt;
int16x4_t cvt1,cvt2;
int8x8_t outV;
blkCnt = blockSize >> 3U;
/* Compute 8 outputs at a time.
** a second loop below computes the remaining 1 to 7 samples. */
while (blkCnt > 0U)
{
#ifdef ARM_MATH_ROUNDING
/* C = A * 128 */
/* Convert from float to q7 and then store the results in the destination buffer */
inV = vld1q_f32(pIn);
cmp = vcgtq_f32(inV,zeroV);
r = vbslq_f32(cmp,pHalf,mHalf);
inV = vaddq_f32(inV, r);
cvt1 = vqmovn_s32(vcvtq_n_s32_f32(inV,7));
pIn += 4;
inV = vld1q_f32(pIn);
cmp = vcgtq_f32(inV,zeroV);
r = vbslq_f32(cmp,pHalf,mHalf);
inV = vaddq_f32(inV, r);
cvt2 = vqmovn_s32(vcvtq_n_s32_f32(inV,7));
pIn += 4;
outV = vqmovn_s16(vcombine_s16(cvt1,cvt2));
vst1_s8(pDst, outV);
pDst += 8;
#else
/* C = A * 128 */
/* Convert from float to q7 and then store the results in the destination buffer */
inV = vld1q_f32(pIn);
cvt1 = vqmovn_s32(vcvtq_n_s32_f32(inV,7));
pIn += 4;
inV = vld1q_f32(pIn);
cvt2 = vqmovn_s32(vcvtq_n_s32_f32(inV,7));
pIn += 4;
outV = vqmovn_s16(vcombine_s16(cvt1,cvt2));
vst1_s8(pDst, outV);
pDst += 8;
#endif /* #ifdef ARM_MATH_ROUNDING */
/* Decrement the loop counter */
blkCnt--;
}
/* If the blockSize is not a multiple of 4, compute any remaining output samples here.
** No loop unrolling is used. */
blkCnt = blockSize & 7;
while (blkCnt > 0U)
{
#ifdef ARM_MATH_ROUNDING
/* C = A * 128 */
/* Convert from float to q7 and then store the results in the destination buffer */
in = *pIn++;
in = (in * 128);
in += in > 0.0f ? 0.5f : -0.5f;
*pDst++ = (q7_t) (__SSAT((q15_t) (in), 8));
#else
/* C = A * 128 */
/* Convert from float to q7 and then store the results in the destination buffer */
*pDst++ = __SSAT((q31_t) (*pIn++ * 128.0f), 8);
#endif /* #ifdef ARM_MATH_ROUNDING */
/* Decrement the loop counter */
blkCnt--;
}
}
#else
void arm_float_to_q7(
const float32_t * pSrc,
q7_t * pDst,
uint32_t blockSize)
{
uint32_t blkCnt; /* Loop counter */
const float32_t *pIn = pSrc; /* Source pointer */
#ifdef ARM_MATH_ROUNDING
float32_t in;
#endif /* #ifdef ARM_MATH_ROUNDING */
#if defined (ARM_MATH_LOOPUNROLL)
/* Loop unrolling: Compute 4 outputs at a time */
blkCnt = blockSize >> 2U;
while (blkCnt > 0U)
{
/* C = A * 128 */
/* Convert from float to q7 and store result in destination buffer */
#ifdef ARM_MATH_ROUNDING
in = (*pIn++ * 128);
in += in > 0.0f ? 0.5f : -0.5f;
*pDst++ = (q7_t) (__SSAT((q15_t) (in), 8));
in = (*pIn++ * 128);
in += in > 0.0f ? 0.5f : -0.5f;
*pDst++ = (q7_t) (__SSAT((q15_t) (in), 8));
in = (*pIn++ * 128);
in += in > 0.0f ? 0.5f : -0.5f;
*pDst++ = (q7_t) (__SSAT((q15_t) (in), 8));
in = (*pIn++ * 128);
in += in > 0.0f ? 0.5f : -0.5f;
*pDst++ = (q7_t) (__SSAT((q15_t) (in), 8));
#else
*pDst++ = __SSAT((q31_t) (*pIn++ * 128.0f), 8);
*pDst++ = __SSAT((q31_t) (*pIn++ * 128.0f), 8);
*pDst++ = __SSAT((q31_t) (*pIn++ * 128.0f), 8);
*pDst++ = __SSAT((q31_t) (*pIn++ * 128.0f), 8);
#endif /* #ifdef ARM_MATH_ROUNDING */
/* Decrement loop counter */
blkCnt--;
}
/* Loop unrolling: Compute remaining outputs */
blkCnt = blockSize % 0x4U;
#else
/* Initialize blkCnt with number of samples */
blkCnt = blockSize;
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
while (blkCnt > 0U)
{
/* C = A * 128 */
/* Convert from float to q7 and store result in destination buffer */
#ifdef ARM_MATH_ROUNDING
in = (*pIn++ * 128);
in += in > 0.0f ? 0.5f : -0.5f;
*pDst++ = (q7_t) (__SSAT((q15_t) (in), 8));
#else
*pDst++ = (q7_t) __SSAT((q31_t) (*pIn++ * 128.0f), 8);
#endif /* #ifdef ARM_MATH_ROUNDING */
/* Decrement loop counter */
blkCnt--;
}
}
#endif /* #if defined(ARM_MATH_NEON) */
/**
@} end of float_to_x group
*/

166
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/* ----------------------------------------------------------------------
* Project: CMSIS DSP Library
* Title: arm_q15_to_float.c
* Description: Converts the elements of the Q15 vector to floating-point vector
*
* $Date: 18. March 2019
* $Revision: V1.6.0
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "arm_math.h"
/**
@ingroup groupSupport
*/
/**
* @defgroup q15_to_x Convert 16-bit Integer value
*/
/**
@addtogroup q15_to_x
@{
*/
/**
@brief Converts the elements of the Q15 vector to floating-point vector.
@param[in] pSrc points to the Q15 input vector
@param[out] pDst points to the floating-point output vector
@param[in] blockSize number of samples in each vector
@return none
@par Details
The equation used for the conversion process is:
<pre>
pDst[n] = (float32_t) pSrc[n] / 32768; 0 <= n < blockSize.
</pre>
*/
#if defined(ARM_MATH_NEON_EXPERIMENTAL)
void arm_q15_to_float(
const q15_t * pSrc,
float32_t * pDst,
uint32_t blockSize)
{
const q15_t *pIn = pSrc; /* Src pointer */
uint32_t blkCnt; /* loop counter */
int16x8_t inV;
int32x4_t inV0, inV1;
float32x4_t outV;
blkCnt = blockSize >> 3U;
/* Compute 8 outputs at a time.
** a second loop below computes the remaining 1 to 7 samples. */
while (blkCnt > 0U)
{
/* C = (float32_t) A / 32768 */
/* convert from q15 to float and then store the results in the destination buffer */
inV = vld1q_s16(pIn);
pIn += 8;
inV0 = vmovl_s16(vget_low_s16(inV));
inV1 = vmovl_s16(vget_high_s16(inV));
outV = vcvtq_n_f32_s32(inV0,15);
vst1q_f32(pDst, outV);
pDst += 4;
outV = vcvtq_n_f32_s32(inV1,15);
vst1q_f32(pDst, outV);
pDst += 4;
/* Decrement the loop counter */
blkCnt--;
}
/* If the blockSize is not a multiple of 8, compute any remaining output samples here.
** No loop unrolling is used. */
blkCnt = blockSize & 7;
while (blkCnt > 0U)
{
/* C = (float32_t) A / 32768 */
/* convert from q15 to float and then store the results in the destination buffer */
*pDst++ = ((float32_t) * pIn++ / 32768.0f);
/* Decrement the loop counter */
blkCnt--;
}
}
#else
void arm_q15_to_float(
const q15_t * pSrc,
float32_t * pDst,
uint32_t blockSize)
{
uint32_t blkCnt; /* Loop counter */
const q15_t *pIn = pSrc; /* Source pointer */
#if defined (ARM_MATH_LOOPUNROLL)
/* Loop unrolling: Compute 4 outputs at a time */
blkCnt = blockSize >> 2U;
while (blkCnt > 0U)
{
/* C = (float32_t) A / 32768 */
/* Convert from q15 to float and store result in destination buffer */
*pDst++ = ((float32_t) * pIn++ / 32768.0f);
*pDst++ = ((float32_t) * pIn++ / 32768.0f);
*pDst++ = ((float32_t) * pIn++ / 32768.0f);
*pDst++ = ((float32_t) * pIn++ / 32768.0f);
/* Decrement loop counter */
blkCnt--;
}
/* Loop unrolling: Compute remaining outputs */
blkCnt = blockSize % 0x4U;
#else
/* Initialize blkCnt with number of samples */
blkCnt = blockSize;
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
while (blkCnt > 0U)
{
/* C = (float32_t) A / 32768 */
/* Convert from q15 to float and store result in destination buffer */
*pDst++ = ((float32_t) *pIn++ / 32768.0f);
/* Decrement loop counter */
blkCnt--;
}
}
#endif /* #if defined(ARM_MATH_NEON) */
/**
@} end of q15_to_x group
*/

138
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/* ----------------------------------------------------------------------
* Project: CMSIS DSP Library
* Title: arm_q15_to_q31.c
* Description: Converts the elements of the Q15 vector to Q31 vector
*
* $Date: 18. March 2019
* $Revision: V1.6.0
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "arm_math.h"
/**
@ingroup groupSupport
*/
/**
@addtogroup q15_to_x
@{
*/
/**
@brief Converts the elements of the Q15 vector to Q31 vector.
@param[in] pSrc points to the Q15 input vector
@param[out] pDst points to the Q31 output vector
@param[in] blockSize number of samples in each vector
@return none
@par Details
The equation used for the conversion process is:
<pre>
pDst[n] = (q31_t) pSrc[n] << 16; 0 <= n < blockSize.
</pre>
*/
void arm_q15_to_q31(
const q15_t * pSrc,
q31_t * pDst,
uint32_t blockSize)
{
uint32_t blkCnt; /* Loop counter */
const q15_t *pIn = pSrc; /* Source pointer */
#if defined (ARM_MATH_LOOPUNROLL)
q31_t in1, in2;
q31_t out1, out2, out3, out4;
#endif
#if defined (ARM_MATH_LOOPUNROLL)
/* Loop unrolling: Compute 4 outputs at a time */
blkCnt = blockSize >> 2U;
while (blkCnt > 0U)
{
/* C = (q31_t)A << 16 */
/* Convert from q15 to q31 and store result in destination buffer */
in1 = read_q15x2_ia ((q15_t **) &pIn);
in2 = read_q15x2_ia ((q15_t **) &pIn);
#ifndef ARM_MATH_BIG_ENDIAN
/* extract lower 16 bits to 32 bit result */
out1 = in1 << 16U;
/* extract upper 16 bits to 32 bit result */
out2 = in1 & 0xFFFF0000;
/* extract lower 16 bits to 32 bit result */
out3 = in2 << 16U;
/* extract upper 16 bits to 32 bit result */
out4 = in2 & 0xFFFF0000;
#else
/* extract upper 16 bits to 32 bit result */
out1 = in1 & 0xFFFF0000;
/* extract lower 16 bits to 32 bit result */
out2 = in1 << 16U;
/* extract upper 16 bits to 32 bit result */
out3 = in2 & 0xFFFF0000;
/* extract lower 16 bits to 32 bit result */
out4 = in2 << 16U;
#endif /* #ifndef ARM_MATH_BIG_ENDIAN */
*pDst++ = out1;
*pDst++ = out2;
*pDst++ = out3;
*pDst++ = out4;
/* Decrement loop counter */
blkCnt--;
}
/* Loop unrolling: Compute remaining outputs */
blkCnt = blockSize % 0x4U;
#else
/* Initialize blkCnt with number of samples */
blkCnt = blockSize;
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
while (blkCnt > 0U)
{
/* C = (q31_t) A << 16 */
/* Convert from q15 to q31 and store result in destination buffer */
*pDst++ = (q31_t) *pIn++ << 16;
/* Decrement loop counter */
blkCnt--;
}
}
/**
@} end of q15_to_x group
*/

146
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/* ----------------------------------------------------------------------
* Project: CMSIS DSP Library
* Title: arm_q15_to_q7.c
* Description: Converts the elements of the Q15 vector to Q7 vector
*
* $Date: 18. March 2019
* $Revision: V1.6.0
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "arm_math.h"
/**
@ingroup groupSupport
*/
/**
@addtogroup q15_to_x
@{
*/
/**
@brief Converts the elements of the Q15 vector to Q7 vector.
@param[in] pSrc points to the Q15 input vector
@param[out] pDst points to the Q7 output vector
@param[in] blockSize number of samples in each vector
@return none
@par Details
The equation used for the conversion process is:
<pre>
pDst[n] = (q7_t) pSrc[n] >> 8; 0 <= n < blockSize.
</pre>
*/
void arm_q15_to_q7(
const q15_t * pSrc,
q7_t * pDst,
uint32_t blockSize)
{
uint32_t blkCnt; /* Loop counter */
const q15_t *pIn = pSrc; /* Source pointer */
#if defined (ARM_MATH_LOOPUNROLL) && defined (ARM_MATH_DSP)
q31_t in1, in2;
q31_t out1, out2;
#endif
#if defined (ARM_MATH_LOOPUNROLL)
/* Loop unrolling: Compute 4 outputs at a time */
blkCnt = blockSize >> 2U;
while (blkCnt > 0U)
{
/* C = (q7_t) A >> 8 */
/* Convert from q15 to q7 and store result in destination buffer */
#if defined (ARM_MATH_DSP)
in1 = read_q15x2_ia ((q15_t **) &pIn);
in2 = read_q15x2_ia ((q15_t **) &pIn);
#ifndef ARM_MATH_BIG_ENDIAN
out1 = __PKHTB(in2, in1, 16);
out2 = __PKHBT(in2, in1, 16);
#else
out1 = __PKHTB(in1, in2, 16);
out2 = __PKHBT(in1, in2, 16);
#endif /* #ifndef ARM_MATH_BIG_ENDIAN */
/* rotate packed value by 24 */
out2 = ((uint32_t) out2 << 8) | ((uint32_t) out2 >> 24);
/* anding with 0xff00ff00 to get two 8 bit values */
out1 = out1 & 0xFF00FF00;
/* anding with 0x00ff00ff to get two 8 bit values */
out2 = out2 & 0x00FF00FF;
/* oring two values(contains two 8 bit values) to get four packed 8 bit values */
out1 = out1 | out2;
/* store 4 samples at a time to destiantion buffer */
write_q7x4_ia (&pDst, out1);
#else
*pDst++ = (q7_t) (*pIn++ >> 8);
*pDst++ = (q7_t) (*pIn++ >> 8);
*pDst++ = (q7_t) (*pIn++ >> 8);
*pDst++ = (q7_t) (*pIn++ >> 8);
#endif /* #if defined (ARM_MATH_DSP) */
/* Decrement loop counter */
blkCnt--;
}
/* Loop unrolling: Compute remaining outputs */
blkCnt = blockSize % 0x4U;
#else
/* Initialize blkCnt with number of samples */
blkCnt = blockSize;
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
while (blkCnt > 0U)
{
/* C = (q7_t) A >> 8 */
/* Convert from q15 to q7 and store result in destination buffer */
*pDst++ = (q7_t) (*pIn++ >> 8);
/* Decrement loop counter */
blkCnt--;
}
}
/**
@} end of q15_to_x group
*/

159
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/* ----------------------------------------------------------------------
* Project: CMSIS DSP Library
* Title: arm_q31_to_float.c
* Description: Converts the elements of the Q31 vector to floating-point vector
*
* $Date: 18. March 2019
* $Revision: V1.6.0
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "arm_math.h"
/**
@ingroup groupSupport
*/
/**
* @defgroup q31_to_x Convert 32-bit Integer value
*/
/**
@addtogroup q31_to_x
@{
*/
/**
@brief Converts the elements of the Q31 vector to floating-point vector.
@param[in] pSrc points to the Q31 input vector
@param[out] pDst points to the floating-point output vector
@param[in] blockSize number of samples in each vector
@return none
@par Details
The equation used for the conversion process is:
<pre>
pDst[n] = (float32_t) pSrc[n] / 2147483648; 0 <= n < blockSize.
</pre>
*/
#if defined(ARM_MATH_NEON_EXPERIMENTAL)
void arm_q31_to_float(
const q31_t * pSrc,
float32_t * pDst,
uint32_t blockSize)
{
const q31_t *pIn = pSrc; /* Src pointer */
uint32_t blkCnt; /* loop counter */
int32x4_t inV;
float32x4_t outV;
blkCnt = blockSize >> 2U;
/* Compute 4 outputs at a time.
** a second loop below computes the remaining 1 to 3 samples. */
while (blkCnt > 0U)
{
/* C = (float32_t) A / 2147483648 */
/* Convert from q31 to float and then store the results in the destination buffer */
inV = vld1q_s32(pIn);
pIn += 4;
outV = vcvtq_n_f32_s32(inV,31);
vst1q_f32(pDst, outV);
pDst += 4;
/* Decrement the loop counter */
blkCnt--;
}
/* If the blockSize is not a multiple of 4, compute any remaining output samples here.
** No loop unrolling is used. */
blkCnt = blockSize & 3;
while (blkCnt > 0U)
{
/* C = (float32_t) A / 2147483648 */
/* Convert from q31 to float and then store the results in the destination buffer */
*pDst++ = ((float32_t) * pIn++ / 2147483648.0f);
/* Decrement the loop counter */
blkCnt--;
}
}
#else
void arm_q31_to_float(
const q31_t * pSrc,
float32_t * pDst,
uint32_t blockSize)
{
const q31_t *pIn = pSrc; /* Src pointer */
uint32_t blkCnt; /* loop counter */
#if defined (ARM_MATH_LOOPUNROLL)
/* Loop unrolling */
blkCnt = blockSize >> 2U;
while (blkCnt > 0U)
{
/* C = (float32_t) A / 2147483648 */
/* Convert from q31 to float and store result in destination buffer */
*pDst++ = ((float32_t) *pIn++ / 2147483648.0f);
*pDst++ = ((float32_t) *pIn++ / 2147483648.0f);
*pDst++ = ((float32_t) *pIn++ / 2147483648.0f);
*pDst++ = ((float32_t) *pIn++ / 2147483648.0f);
/* Decrement loop counter */
blkCnt--;
}
/* Loop unrolling: Compute remaining outputs */
blkCnt = blockSize % 0x4U;
#else
/* Initialize blkCnt with number of samples */
blkCnt = blockSize;
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
while (blkCnt > 0U)
{
/* C = (float32_t) A / 2147483648 */
/* Convert from q31 to float and store result in destination buffer */
*pDst++ = ((float32_t) *pIn++ / 2147483648.0f);
/* Decrement loop counter */
blkCnt--;
}
}
#endif /* #if defined(ARM_MATH_NEON) */
/**
@} end of q31_to_x group
*/

134
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/* ----------------------------------------------------------------------
* Project: CMSIS DSP Library
* Title: arm_q31_to_q15.c
* Description: Converts the elements of the Q31 vector to Q15 vector
*
* $Date: 18. March 2019
* $Revision: V1.6.0
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "arm_math.h"
/**
@ingroup groupSupport
*/
/**
@addtogroup q31_to_x
@{
*/
/**
@brief Converts the elements of the Q31 vector to Q15 vector.
@param[in] pSrc points to the Q31 input vector
@param[out] pDst points to the Q15 output vector
@param[in] blockSize number of samples in each vector
@return none
@par Details
The equation used for the conversion process is:
<pre>
pDst[n] = (q15_t) pSrc[n] >> 16; 0 <= n < blockSize.
</pre>
*/
void arm_q31_to_q15(
const q31_t * pSrc,
q15_t * pDst,
uint32_t blockSize)
{
uint32_t blkCnt; /* Loop counter */
const q31_t *pIn = pSrc; /* Source pointer */
#if defined (ARM_MATH_LOOPUNROLL) && defined (ARM_MATH_DSP)
q31_t in1, in2, in3, in4;
q31_t out1, out2;
#endif
#if defined (ARM_MATH_LOOPUNROLL)
/* Loop unrolling: Compute 4 outputs at a time */
blkCnt = blockSize >> 2U;
while (blkCnt > 0U)
{
/* C = (q15_t) (A >> 16) */
/* Convert from q31 to q15 and store result in destination buffer */
#if defined (ARM_MATH_DSP)
in1 = *pIn++;
in2 = *pIn++;
in3 = *pIn++;
in4 = *pIn++;
/* pack two higher 16-bit values from two 32-bit values */
#ifndef ARM_MATH_BIG_ENDIAN
out1 = __PKHTB(in2, in1, 16);
out2 = __PKHTB(in4, in3, 16);
#else
out1 = __PKHTB(in1, in2, 16);
out2 = __PKHTB(in3, in4, 16);
#endif /* #ifdef ARM_MATH_BIG_ENDIAN */
write_q15x2_ia (&pDst, out1);
write_q15x2_ia (&pDst, out2);
#else
*pDst++ = (q15_t) (*pIn++ >> 16);
*pDst++ = (q15_t) (*pIn++ >> 16);
*pDst++ = (q15_t) (*pIn++ >> 16);
*pDst++ = (q15_t) (*pIn++ >> 16);
#endif /* #if defined (ARM_MATH_DSP) */
/* Decrement loop counter */
blkCnt--;
}
/* Loop unrolling: Compute remaining outputs */
blkCnt = blockSize % 0x4U;
#else
/* Initialize blkCnt with number of samples */
blkCnt = blockSize;
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
while (blkCnt > 0U)
{
/* C = (q15_t) (A >> 16) */
/* Convert from q31 to q15 and store result in destination buffer */
*pDst++ = (q15_t) (*pIn++ >> 16);
/* Decrement loop counter */
blkCnt--;
}
}
/**
@} end of q31_to_x group
*/

110
Drivers/CMSIS/DSP/Source/SupportFunctions/arm_q31_to_q7.c Normal file
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/* ----------------------------------------------------------------------
* Project: CMSIS DSP Library
* Title: arm_q31_to_q7.c
* Description: Converts the elements of the Q31 vector to Q7 vector
*
* $Date: 18. March 2019
* $Revision: V1.6.0
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "arm_math.h"
/**
@ingroup groupSupport
*/
/**
@addtogroup q31_to_x
@{
*/
/**
@brief Converts the elements of the Q31 vector to Q7 vector.
@param[in] pSrc points to the Q31 input vector
@param[out] pDst points to the Q7 output vector
@param[in] blockSize number of samples in each vector
@return none
@par Details
The equation used for the conversion process is:
<pre>
pDst[n] = (q7_t) pSrc[n] >> 24; 0 <= n < blockSize.
</pre>
*/
void arm_q31_to_q7(
const q31_t * pSrc,
q7_t * pDst,
uint32_t blockSize)
{
uint32_t blkCnt; /* Loop counter */
const q31_t *pIn = pSrc; /* Source pointer */
#if defined (ARM_MATH_LOOPUNROLL)
q7_t out1, out2, out3, out4;
/* Loop unrolling: Compute 4 outputs at a time */
blkCnt = blockSize >> 2U;
while (blkCnt > 0U)
{
/* C = (q7_t) (A >> 24) */
/* Convert from q31 to q7 and store result in destination buffer */
out1 = (q7_t) (*pIn++ >> 24);
out2 = (q7_t) (*pIn++ >> 24);
out3 = (q7_t) (*pIn++ >> 24);
out4 = (q7_t) (*pIn++ >> 24);
write_q7x4_ia (&pDst, __PACKq7(out1, out2, out3, out4));
/* Decrement loop counter */
blkCnt--;
}
/* Loop unrolling: Compute remaining outputs */
blkCnt = blockSize % 0x4U;
#else
/* Initialize blkCnt with number of samples */
blkCnt = blockSize;
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
while (blkCnt > 0U)
{
/* C = (q7_t) (A >> 24) */
/* Convert from q31 to q7 and store result in destination buffer */
*pDst++ = (q7_t) (*pIn++ >> 24);
/* Decrement loop counter */
blkCnt--;
}
}
/**
@} end of q31_to_x group
*/

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/* ----------------------------------------------------------------------
* Project: CMSIS DSP Library
* Title: arm_q7_to_float.c
* Description: Converts the elements of the Q7 vector to floating-point vector
*
* $Date: 18. March 2019
* $Revision: V1.6.0
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "arm_math.h"
/**
@ingroup groupSupport
*/
/**
* @defgroup q7_to_x Convert 8-bit Integer value
*/
/**
@addtogroup q7_to_x
@{
*/
/**
@brief Converts the elements of the Q7 vector to floating-point vector.
@param[in] pSrc points to the Q7 input vector
@param[out] pDst points to the floating-point output vector
@param[in] blockSize number of samples in each vector
@return none
@par Details
The equation used for the conversion process is:
<pre>
pDst[n] = (float32_t) pSrc[n] / 128; 0 <= n < blockSize.
</pre>
*/
#if defined(ARM_MATH_NEON)
void arm_q7_to_float(
const q7_t * pSrc,
float32_t * pDst,
uint32_t blockSize)
{
const q7_t *pIn = pSrc; /* Src pointer */
uint32_t blkCnt; /* loop counter */
int8x16_t inV;
int16x8_t inVLO, inVHI;
int32x4_t inVLL, inVLH, inVHL, inVHH;
float32x4_t outV;
blkCnt = blockSize >> 4U;
/* Compute 16 outputs at a time.
** a second loop below computes the remaining 1 to 15 samples. */
while (blkCnt > 0U)
{
/* C = (float32_t) A / 128 */
/* Convert from q7 to float and then store the results in the destination buffer */
inV = vld1q_s8(pIn);
pIn += 16;
inVLO = vmovl_s8(vget_low_s8(inV));
inVHI = vmovl_s8(vget_high_s8(inV));
inVLL = vmovl_s16(vget_low_s16(inVLO));
inVLH = vmovl_s16(vget_high_s16(inVLO));
inVHL = vmovl_s16(vget_low_s16(inVHI));
inVHH = vmovl_s16(vget_high_s16(inVHI));
outV = vcvtq_n_f32_s32(inVLL,7);
vst1q_f32(pDst, outV);
pDst += 4;
outV = vcvtq_n_f32_s32(inVLH,7);
vst1q_f32(pDst, outV);
pDst += 4;
outV = vcvtq_n_f32_s32(inVHL,7);
vst1q_f32(pDst, outV);
pDst += 4;
outV = vcvtq_n_f32_s32(inVHH,7);
vst1q_f32(pDst, outV);
pDst += 4;
/* Decrement the loop counter */
blkCnt--;
}
/* If the blockSize is not a multiple of 16, compute any remaining output samples here.
** No loop unrolling is used. */
blkCnt = blockSize & 0xF;
while (blkCnt > 0U)
{
/* C = (float32_t) A / 128 */
/* Convert from q7 to float and then store the results in the destination buffer */
*pDst++ = ((float32_t) * pIn++ / 128.0f);
/* Decrement the loop counter */
blkCnt--;
}
}
#else
void arm_q7_to_float(
const q7_t * pSrc,
float32_t * pDst,
uint32_t blockSize)
{
uint32_t blkCnt; /* Loop counter */
const q7_t *pIn = pSrc; /* Source pointer */
#if defined (ARM_MATH_LOOPUNROLL)
/* Loop unrolling: Compute 4 outputs at a time */
blkCnt = blockSize >> 2U;
while (blkCnt > 0U)
{
/* C = (float32_t) A / 128 */
/* Convert from q7 to float and store result in destination buffer */
*pDst++ = ((float32_t) * pIn++ / 128.0f);
*pDst++ = ((float32_t) * pIn++ / 128.0f);
*pDst++ = ((float32_t) * pIn++ / 128.0f);
*pDst++ = ((float32_t) * pIn++ / 128.0f);
/* Decrement loop counter */
blkCnt--;
}
/* Loop unrolling: Compute remaining outputs */
blkCnt = blockSize % 0x4U;
#else
/* Initialize blkCnt with number of samples */
blkCnt = blockSize;
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
while (blkCnt > 0U)
{
/* C = (float32_t) A / 128 */
/* Convert from q7 to float and store result in destination buffer */
*pDst++ = ((float32_t) * pIn++ / 128.0f);
/* Decrement loop counter */
blkCnt--;
}
}
#endif /* #if defined(ARM_MATH_NEON) */
/**
@} end of q7_to_x group
*/

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/* ----------------------------------------------------------------------
* Project: CMSIS DSP Library
* Title: arm_q7_to_q15.c
* Description: Converts the elements of the Q7 vector to Q15 vector
*
* $Date: 18. March 2019
* $Revision: V1.6.0
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "arm_math.h"
/**
@ingroup groupSupport
*/
/**
@addtogroup q7_to_x
@{
*/
/**
@brief Converts the elements of the Q7 vector to Q15 vector.
@param[in] pSrc points to the Q7 input vector
@param[out] pDst points to the Q15 output vector
@param[in] blockSize number of samples in each vector
@return none
@par Details
The equation used for the conversion process is:
<pre>
pDst[n] = (q15_t) pSrc[n] << 8; 0 <= n < blockSize.
</pre>
*/
void arm_q7_to_q15(
const q7_t * pSrc,
q15_t * pDst,
uint32_t blockSize)
{
uint32_t blkCnt; /* Loop counter */
const q7_t *pIn = pSrc; /* Source pointer */
#if defined (ARM_MATH_LOOPUNROLL) && defined (ARM_MATH_DSP)
q31_t in;
q31_t in1, in2;
q31_t out1, out2;
#endif
#if defined (ARM_MATH_LOOPUNROLL)
/* Loop unrolling: Compute 4 outputs at a time */
blkCnt = blockSize >> 2U;
while (blkCnt > 0U)
{
/* C = (q15_t) A << 8 */
/* Convert from q7 to q15 and store result in destination buffer */
#if defined (ARM_MATH_DSP)
in = read_q7x4_ia ((q7_t **) &pIn);
/* rotatate in by 8 and extend two q7_t values to q15_t values */
in1 = __SXTB16(__ROR(in, 8));
/* extend remainig two q7_t values to q15_t values */
in2 = __SXTB16(in);
in1 = in1 << 8U;
in2 = in2 << 8U;
in1 = in1 & 0xFF00FF00;
in2 = in2 & 0xFF00FF00;
#ifndef ARM_MATH_BIG_ENDIAN
out2 = __PKHTB(in1, in2, 16);
out1 = __PKHBT(in2, in1, 16);
#else
out1 = __PKHTB(in1, in2, 16);
out2 = __PKHBT(in2, in1, 16);
#endif
write_q15x2_ia (&pDst, out1);
write_q15x2_ia (&pDst, out2);
#else
*pDst++ = (q15_t) *pIn++ << 8;
*pDst++ = (q15_t) *pIn++ << 8;
*pDst++ = (q15_t) *pIn++ << 8;
*pDst++ = (q15_t) *pIn++ << 8;
#endif /* #if defined (ARM_MATH_DSP) */
/* Decrement loop counter */
blkCnt--;
}
/* Loop unrolling: Compute remaining outputs */
blkCnt = blockSize % 0x4U;
#else
/* Initialize blkCnt with number of samples */
blkCnt = blockSize;
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
while (blkCnt > 0U)
{
/* C = (q15_t) A << 8 */
/* Convert from q7 to q15 and store result in destination buffer */
*pDst++ = (q15_t) * pIn++ << 8;
/* Decrement loop counter */
blkCnt--;
}
}
/**
@} end of q7_to_x group
*/

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/* ----------------------------------------------------------------------
* Project: CMSIS DSP Library
* Title: arm_q7_to_q31.c
* Description: Converts the elements of the Q7 vector to Q31 vector
*
* $Date: 18. March 2019
* $Revision: V1.6.0
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "arm_math.h"
/**
@ingroup groupSupport
*/
/**
@addtogroup q7_to_x
@{
*/
/**
@brief Converts the elements of the Q7 vector to Q31 vector.
@param[in] pSrc points to the Q7 input vector
@param[out] pDst points to the Q31 output vector
@param[in] blockSize number of samples in each vector
@return none
@par Details
The equation used for the conversion process is:
<pre>
pDst[n] = (q31_t) pSrc[n] << 24; 0 <= n < blockSize.
</pre>
*/
void arm_q7_to_q31(
const q7_t * pSrc,
q31_t * pDst,
uint32_t blockSize)
{
uint32_t blkCnt; /* Loop counter */
const q7_t *pIn = pSrc; /* Source pointer */
#if defined (ARM_MATH_LOOPUNROLL)
q31_t in;
/* Loop unrolling: Compute 4 outputs at a time */
blkCnt = blockSize >> 2U;
while (blkCnt > 0U)
{
/* C = (q31_t) A << 24 */
/* Convert from q7 to q31 and store result in destination buffer */
in = read_q7x4_ia ((q7_t **) &pIn);
#ifndef ARM_MATH_BIG_ENDIAN
*pDst++ = (__ROR(in, 8)) & 0xFF000000;
*pDst++ = (__ROR(in, 16)) & 0xFF000000;
*pDst++ = (__ROR(in, 24)) & 0xFF000000;
*pDst++ = (in & 0xFF000000);
#else
*pDst++ = (in & 0xFF000000);
*pDst++ = (__ROR(in, 24)) & 0xFF000000;
*pDst++ = (__ROR(in, 16)) & 0xFF000000;
*pDst++ = (__ROR(in, 8)) & 0xFF000000;
#endif /* #ifndef ARM_MATH_BIG_ENDIAN */
/* Decrement loop counter */
blkCnt--;
}
/* Loop unrolling: Compute remaining outputs */
blkCnt = blockSize % 0x4U;
#else
/* Initialize blkCnt with number of samples */
blkCnt = blockSize;
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
while (blkCnt > 0U)
{
/* C = (q31_t) A << 24 */
/* Convert from q7 to q31 and store result in destination buffer */
*pDst++ = (q31_t) * pIn++ << 24;
/* Decrement loop counter */
blkCnt--;
}
}
/**
@} end of q7_to_x group
*/