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Jasper Blanckenburg
2023-03-12 18:32:12 +01:00
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123
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: 27. January 2017
* $Revision: V.1.5.1
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2017 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 length of the input vector
* @return none.
*
*/
void arm_copy_f32(
float32_t * pSrc,
float32_t * pDst,
uint32_t blockSize)
{
uint32_t blkCnt; /* loop counter */
#if defined (ARM_MATH_DSP)
/* Run the below code for Cortex-M4 and Cortex-M3 */
float32_t in1, in2, in3, in4;
/*loop Unrolling */
blkCnt = blockSize >> 2U;
/* First part of the processing with loop unrolling. 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 */
in1 = *pSrc++;
in2 = *pSrc++;
in3 = *pSrc++;
in4 = *pSrc++;
*pDst++ = in1;
*pDst++ = in2;
*pDst++ = in3;
*pDst++ = in4;
/* 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 % 0x4U;
#else
/* Run the below code for Cortex-M0 */
/* Loop over blockSize number of values */
blkCnt = blockSize;
#endif /* #if defined (ARM_MATH_DSP) */
while (blkCnt > 0U)
{
/* C = A */
/* Copy and then store the results in the destination buffer */
*pDst++ = *pSrc++;
/* Decrement the loop counter */
blkCnt--;
}
}
/**
* @} end of BasicCopy group
*/

102
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: 27. January 2017
* $Revision: V.1.5.1
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2017 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 length of the input vector
* @return none.
*
*/
void arm_copy_q15(
q15_t * pSrc,
q15_t * pDst,
uint32_t blockSize)
{
uint32_t blkCnt; /* loop counter */
#if defined (ARM_MATH_DSP)
/* Run the below code for Cortex-M4 and Cortex-M3 */
/*loop Unrolling */
blkCnt = blockSize >> 2U;
/* First part of the processing with loop unrolling. Compute 4 outputs at a time.
** a second loop below computes the remaining 1 to 3 samples. */
while (blkCnt > 0U)
{
/* C = A */
/* Read two inputs */
*__SIMD32(pDst)++ = *__SIMD32(pSrc)++;
*__SIMD32(pDst)++ = *__SIMD32(pSrc)++;
/* 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 % 0x4U;
#else
/* Run the below code for Cortex-M0 */
/* Loop over blockSize number of values */
blkCnt = blockSize;
#endif /* #if defined (ARM_MATH_DSP) */
while (blkCnt > 0U)
{
/* C = A */
/* Copy and then store the value in the destination buffer */
*pDst++ = *pSrc++;
/* Decrement the loop counter */
blkCnt--;
}
}
/**
* @} end of BasicCopy group
*/

111
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: 27. January 2017
* $Revision: V.1.5.1
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2017 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 length of the input vector
* @return none.
*
*/
void arm_copy_q31(
q31_t * pSrc,
q31_t * pDst,
uint32_t blockSize)
{
uint32_t blkCnt; /* loop counter */
#if defined (ARM_MATH_DSP)
/* Run the below code for Cortex-M4 and Cortex-M3 */
q31_t in1, in2, in3, in4;
/*loop Unrolling */
blkCnt = blockSize >> 2U;
/* First part of the processing with loop unrolling. 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 values in the destination buffer */
in1 = *pSrc++;
in2 = *pSrc++;
in3 = *pSrc++;
in4 = *pSrc++;
*pDst++ = in1;
*pDst++ = in2;
*pDst++ = in3;
*pDst++ = in4;
/* 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 % 0x4U;
#else
/* Run the below code for Cortex-M0 */
/* Loop over blockSize number of values */
blkCnt = blockSize;
#endif /* #if defined (ARM_MATH_DSP) */
while (blkCnt > 0U)
{
/* C = A */
/* Copy and then store the value in the destination buffer */
*pDst++ = *pSrc++;
/* Decrement the loop counter */
blkCnt--;
}
}
/**
* @} end of BasicCopy group
*/

103
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: 27. January 2017
* $Revision: V.1.5.1
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2017 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 length of the input vector
* @return none.
*
*/
void arm_copy_q7(
q7_t * pSrc,
q7_t * pDst,
uint32_t blockSize)
{
uint32_t blkCnt; /* loop counter */
#if defined (ARM_MATH_DSP)
/* Run the below code for Cortex-M4 and Cortex-M3 */
/*loop Unrolling */
blkCnt = blockSize >> 2U;
/* First part of the processing with loop unrolling. 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 */
/* 4 samples are copied and stored at a time using SIMD */
*__SIMD32(pDst)++ = *__SIMD32(pSrc)++;
/* 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 % 0x4U;
#else
/* Run the below code for Cortex-M0 */
/* Loop over blockSize number of values */
blkCnt = blockSize;
#endif /* #if defined (ARM_MATH_DSP) */
while (blkCnt > 0U)
{
/* C = A */
/* Copy and then store the results in the destination buffer */
*pDst++ = *pSrc++;
/* Decrement the loop counter */
blkCnt--;
}
}
/**
* @} end of BasicCopy group
*/

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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: 27. January 2017
* $Revision: V.1.5.1
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2017 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 length of the output vector
* @return none.
*
*/
void arm_fill_f32(
float32_t value,
float32_t * pDst,
uint32_t blockSize)
{
uint32_t blkCnt; /* loop counter */
#if defined (ARM_MATH_DSP)
/* Run the below code for Cortex-M4 and Cortex-M3 */
float32_t in1 = value;
float32_t in2 = value;
float32_t in3 = value;
float32_t in4 = value;
/*loop Unrolling */
blkCnt = blockSize >> 2U;
/* First part of the processing with loop unrolling. 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 */
*pDst++ = in1;
*pDst++ = in2;
*pDst++ = in3;
*pDst++ = in4;
/* 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 % 0x4U;
#else
/* Run the below code for Cortex-M0 */
/* Loop over blockSize number of values */
blkCnt = blockSize;
#endif /* #if defined (ARM_MATH_DSP) */
while (blkCnt > 0U)
{
/* C = value */
/* Fill the value in the destination buffer */
*pDst++ = value;
/* Decrement the loop counter */
blkCnt--;
}
}
/**
* @} end of Fill group
*/

108
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: 27. January 2017
* $Revision: V.1.5.1
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2017 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 length of the output 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_DSP)
/* Run the below code for Cortex-M4 and Cortex-M3 */
q31_t packedValue; /* value packed to 32 bits */
/*loop Unrolling */
blkCnt = blockSize >> 2U;
/* Packing two 16 bit values to 32 bit value in order to use SIMD */
packedValue = __PKHBT(value, value, 16U);
/* First part of the processing with loop unrolling. 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 */
*__SIMD32(pDst)++ = packedValue;
*__SIMD32(pDst)++ = packedValue;
/* 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 % 0x4U;
#else
/* Run the below code for Cortex-M0 */
/* Loop over blockSize number of values */
blkCnt = blockSize;
#endif /* #if defined (ARM_MATH_DSP) */
while (blkCnt > 0U)
{
/* C = value */
/* Fill the value in the destination buffer */
*pDst++ = value;
/* Decrement the loop counter */
blkCnt--;
}
}
/**
* @} end of Fill group
*/

109
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: 27. January 2017
* $Revision: V.1.5.1
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2017 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 length of the output 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_DSP)
/* Run the below code for Cortex-M4 and Cortex-M3 */
q31_t in1 = value;
q31_t in2 = value;
q31_t in3 = value;
q31_t in4 = value;
/*loop Unrolling */
blkCnt = blockSize >> 2U;
/* First part of the processing with loop unrolling. 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 */
*pDst++ = in1;
*pDst++ = in2;
*pDst++ = in3;
*pDst++ = in4;
/* 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 % 0x4U;
#else
/* Run the below code for Cortex-M0 */
/* Loop over blockSize number of values */
blkCnt = blockSize;
#endif /* #if defined (ARM_MATH_DSP) */
while (blkCnt > 0U)
{
/* C = value */
/* Fill the value in the destination buffer */
*pDst++ = value;
/* Decrement the loop counter */
blkCnt--;
}
}
/**
* @} end of Fill group
*/

106
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: 27. January 2017
* $Revision: V.1.5.1
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2017 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 length of the output 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_DSP)
/* Run the below code for Cortex-M4 and Cortex-M3 */
q31_t packedValue; /* value packed to 32 bits */
/*loop Unrolling */
blkCnt = blockSize >> 2U;
/* Packing four 8 bit values to 32 bit value in order to use SIMD */
packedValue = __PACKq7(value, value, value, value);
/* First part of the processing with loop unrolling. 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 */
*__SIMD32(pDst)++ = packedValue;
/* 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 % 0x4U;
#else
/* Run the below code for Cortex-M0 */
/* Loop over blockSize number of values */
blkCnt = blockSize;
#endif /* #if defined (ARM_MATH_DSP) */
while (blkCnt > 0U)
{
/* C = value */
/* Fill the value in the destination buffer */
*pDst++ = value;
/* Decrement the loop counter */
blkCnt--;
}
}
/**
* @} end of Fill group
*/

192
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: 27. January 2017
* $Revision: V.1.5.1
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2017 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 length of the input vector
* @return none.
*
* \par Description:
* \par
* 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:
* \par
* The function uses saturating arithmetic.
* Results outside of the allowable Q15 range [0x8000 0x7FFF] 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.
*
*/
void arm_float_to_q15(
float32_t * pSrc,
q15_t * pDst,
uint32_t blockSize)
{
float32_t *pIn = pSrc; /* Src pointer */
uint32_t blkCnt; /* loop counter */
#ifdef ARM_MATH_ROUNDING
float32_t in;
#endif /* #ifdef ARM_MATH_ROUNDING */
#if defined (ARM_MATH_DSP)
/* Run the below code for Cortex-M4 and Cortex-M3 */
/*loop Unrolling */
blkCnt = blockSize >> 2U;
/* First part of the processing with loop unrolling. 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 */
in = *pIn++;
in = (in * 32768.0f);
in += in > 0.0f ? 0.5f : -0.5f;
*pDst++ = (q15_t) (__SSAT((q31_t) (in), 16));
in = *pIn++;
in = (in * 32768.0f);
in += in > 0.0f ? 0.5f : -0.5f;
*pDst++ = (q15_t) (__SSAT((q31_t) (in), 16));
in = *pIn++;
in = (in * 32768.0f);
in += in > 0.0f ? 0.5f : -0.5f;
*pDst++ = (q15_t) (__SSAT((q31_t) (in), 16));
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);
*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 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 % 0x4U;
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
/* Run the below code for Cortex-M0 */
/* Loop over blockSize number of values */
blkCnt = blockSize;
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 ? 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--;
}
#endif /* #if defined (ARM_MATH_DSP) */
}
/**
* @} end of float_to_x group
*/

199
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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: 27. January 2017
* $Revision: V.1.5.1
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2017 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 length of the input vector
* @return none.
*
*\par Description:
* \par
* The equation used for the conversion process is:
*
* <pre>
* pDst[n] = (q31_t)(pSrc[n] * 2147483648); 0 <= n < blockSize.
* </pre>
* <b>Scaling and Overflow Behavior:</b>
* \par
* The function uses saturating arithmetic.
* Results outside of the allowable Q31 range[0x80000000 0x7FFFFFFF] 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.
*/
void arm_float_to_q31(
float32_t * pSrc,
q31_t * pDst,
uint32_t blockSize)
{
float32_t *pIn = pSrc; /* Src pointer */
uint32_t blkCnt; /* loop counter */
#ifdef ARM_MATH_ROUNDING
float32_t in;
#endif /* #ifdef ARM_MATH_ROUNDING */
#if defined (ARM_MATH_DSP)
/* Run the below code for Cortex-M4 and Cortex-M3 */
/*loop Unrolling */
blkCnt = blockSize >> 2U;
/* First part of the processing with loop unrolling. 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 */
in = *pIn++;
in = (in * 2147483648.0f);
in += in > 0.0f ? 0.5f : -0.5f;
*pDst++ = clip_q63_to_q31((q63_t) (in));
in = *pIn++;
in = (in * 2147483648.0f);
in += in > 0.0f ? 0.5f : -0.5f;
*pDst++ = clip_q63_to_q31((q63_t) (in));
in = *pIn++;
in = (in * 2147483648.0f);
in += in > 0.0f ? 0.5f : -0.5f;
*pDst++ = clip_q63_to_q31((q63_t) (in));
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));
*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 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 % 0x4U;
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
/* Run the below code for Cortex-M0 */
/* Loop over blockSize number of values */
blkCnt = blockSize;
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 ? 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--;
}
#endif /* #if defined (ARM_MATH_DSP) */
}
/**
* @} end of float_to_x group
*/

191
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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: 27. January 2017
* $Revision: V.1.5.1
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2017 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.
*/
void arm_float_to_q7(
float32_t * pSrc,
q7_t * pDst,
uint32_t blockSize)
{
float32_t *pIn = pSrc; /* Src pointer */
uint32_t blkCnt; /* loop counter */
#ifdef ARM_MATH_ROUNDING
float32_t in;
#endif /* #ifdef ARM_MATH_ROUNDING */
#if defined (ARM_MATH_DSP)
/* Run the below code for Cortex-M4 and Cortex-M3 */
/*loop Unrolling */
blkCnt = blockSize >> 2U;
/* First part of the processing with loop unrolling. 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 * 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));
in = *pIn++;
in = (in * 128);
in += in > 0.0f ? 0.5f : -0.5f;
*pDst++ = (q7_t) (__SSAT((q15_t) (in), 8));
in = *pIn++;
in = (in * 128);
in += in > 0.0f ? 0.5f : -0.5f;
*pDst++ = (q7_t) (__SSAT((q15_t) (in), 8));
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);
*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 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 % 0x4U;
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
/* Run the below code for Cortex-M0 */
/* Loop over blockSize number of values */
blkCnt = blockSize;
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 * 128.0f);
in += in > 0 ? 0.5f : -0.5f;
*pDst++ = (q7_t) (__SSAT((q31_t) (in), 8));
#else
/* C = A * 128 */
/* convert from float to q7 and then store the results in the destination buffer */
*pDst++ = (q7_t) __SSAT((q31_t) (*pIn++ * 128.0f), 8);
#endif /* #ifdef ARM_MATH_ROUNDING */
/* Decrement the loop counter */
blkCnt--;
}
#endif /* #if defined (ARM_MATH_DSP) */
}
/**
* @} end of float_to_x group
*/

122
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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: 27. January 2017
* $Revision: V.1.5.1
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2017 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 length of the input vector
* @return none.
*
* \par Description:
*
* The equation used for the conversion process is:
*
* <pre>
* pDst[n] = (float32_t) pSrc[n] / 32768; 0 <= n < blockSize.
* </pre>
*
*/
void arm_q15_to_float(
q15_t * pSrc,
float32_t * pDst,
uint32_t blockSize)
{
q15_t *pIn = pSrc; /* Src pointer */
uint32_t blkCnt; /* loop counter */
#if defined (ARM_MATH_DSP)
/* Run the below code for Cortex-M4 and Cortex-M3 */
/*loop Unrolling */
blkCnt = blockSize >> 2U;
/* First part of the processing with loop unrolling. Compute 4 outputs at a time.
** a second loop below computes the remaining 1 to 3 samples. */
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);
*pDst++ = ((float32_t) * pIn++ / 32768.0f);
*pDst++ = ((float32_t) * pIn++ / 32768.0f);
*pDst++ = ((float32_t) * pIn++ / 32768.0f);
/* 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 % 0x4U;
#else
/* Run the below code for Cortex-M0 */
/* Loop over blockSize number of values */
blkCnt = blockSize;
#endif /* #if defined (ARM_MATH_DSP) */
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--;
}
}
/**
* @} end of q15_to_x group
*/

144
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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: 27. January 2017
* $Revision: V.1.5.1
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2017 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 length of the input vector
* @return none.
*
* \par Description:
*
* 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(
q15_t * pSrc,
q31_t * pDst,
uint32_t blockSize)
{
q15_t *pIn = pSrc; /* Src pointer */
uint32_t blkCnt; /* loop counter */
#if defined (ARM_MATH_DSP)
/* Run the below code for Cortex-M4 and Cortex-M3 */
q31_t in1, in2;
q31_t out1, out2, out3, out4;
/*loop Unrolling */
blkCnt = blockSize >> 2U;
/* First part of the processing with loop unrolling. Compute 4 outputs at a time.
** a second loop below computes the remaining 1 to 3 samples. */
while (blkCnt > 0U)
{
/* C = (q31_t)A << 16 */
/* convert from q15 to q31 and then store the results in the destination buffer */
in1 = *__SIMD32(pIn)++;
in2 = *__SIMD32(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 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 % 0x4U;
#else
/* Run the below code for Cortex-M0 */
/* Loop over blockSize number of values */
blkCnt = blockSize;
#endif /* #if defined (ARM_MATH_DSP) */
while (blkCnt > 0U)
{
/* C = (q31_t)A << 16 */
/* convert from q15 to q31 and then store the results in the destination buffer */
*pDst++ = (q31_t) * pIn++ << 16;
/* Decrement the loop counter */
blkCnt--;
}
}
/**
* @} end of q15_to_x group
*/

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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: 27. January 2017
* $Revision: V.1.5.1
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2017 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 length of the input vector
* @return none.
*
* \par Description:
*
* 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(
q15_t * pSrc,
q7_t * pDst,
uint32_t blockSize)
{
q15_t *pIn = pSrc; /* Src pointer */
uint32_t blkCnt; /* loop counter */
#if defined (ARM_MATH_DSP)
/* Run the below code for Cortex-M4 and Cortex-M3 */
q31_t in1, in2;
q31_t out1, out2;
/*loop Unrolling */
blkCnt = blockSize >> 2U;
/* First part of the processing with loop unrolling. Compute 4 outputs at a time.
** a second loop below computes the remaining 1 to 3 samples. */
while (blkCnt > 0U)
{
/* C = (q7_t) A >> 8 */
/* convert from q15 to q7 and then store the results in the destination buffer */
in1 = *__SIMD32(pIn)++;
in2 = *__SIMD32(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 */
*__SIMD32(pDst)++ = out1;
/* 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 % 0x4U;
#else
/* Run the below code for Cortex-M0 */
/* Loop over blockSize number of values */
blkCnt = blockSize;
#endif /* #if defined (ARM_MATH_DSP) */
while (blkCnt > 0U)
{
/* C = (q7_t) A >> 8 */
/* convert from q15 to q7 and then store the results in the destination buffer */
*pDst++ = (q7_t) (*pIn++ >> 8);
/* Decrement the loop counter */
blkCnt--;
}
}
/**
* @} end of q15_to_x group
*/

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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: 27. January 2017
* $Revision: V.1.5.1
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2017 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 length of the input vector
* @return none.
*
* \par Description:
*
* The equation used for the conversion process is:
*
* <pre>
* pDst[n] = (float32_t) pSrc[n] / 2147483648; 0 <= n < blockSize.
* </pre>
*
*/
void arm_q31_to_float(
q31_t * pSrc,
float32_t * pDst,
uint32_t blockSize)
{
q31_t *pIn = pSrc; /* Src pointer */
uint32_t blkCnt; /* loop counter */
#if defined (ARM_MATH_DSP)
/* Run the below code for Cortex-M4 and Cortex-M3 */
/*loop Unrolling */
blkCnt = blockSize >> 2U;
/* First part of the processing with loop unrolling. 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 */
*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 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 % 0x4U;
#else
/* Run the below code for Cortex-M0 */
/* Loop over blockSize number of values */
blkCnt = blockSize;
#endif /* #if defined (ARM_MATH_DSP) */
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--;
}
}
/**
* @} end of q31_to_x group
*/

133
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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: 27. January 2017
* $Revision: V.1.5.1
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2017 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 length of the input vector
* @return none.
*
* \par Description:
*
* 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(
q31_t * pSrc,
q15_t * pDst,
uint32_t blockSize)
{
q31_t *pIn = pSrc; /* Src pointer */
uint32_t blkCnt; /* loop counter */
#if defined (ARM_MATH_DSP)
/* Run the below code for Cortex-M4 and Cortex-M3 */
q31_t in1, in2, in3, in4;
q31_t out1, out2;
/*loop Unrolling */
blkCnt = blockSize >> 2U;
/* First part of the processing with loop unrolling. Compute 4 outputs at a time.
** a second loop below computes the remaining 1 to 3 samples. */
while (blkCnt > 0U)
{
/* C = (q15_t) A >> 16 */
/* convert from q31 to q15 and then store the results in the destination buffer */
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
*__SIMD32(pDst)++ = out1;
*__SIMD32(pDst)++ = out2;
/* 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 % 0x4U;
#else
/* Run the below code for Cortex-M0 */
/* Loop over blockSize number of values */
blkCnt = blockSize;
#endif /* #if defined (ARM_MATH_DSP) */
while (blkCnt > 0U)
{
/* C = (q15_t) A >> 16 */
/* convert from q31 to q15 and then store the results in the destination buffer */
*pDst++ = (q15_t) (*pIn++ >> 16);
/* Decrement the loop counter */
blkCnt--;
}
}
/**
* @} end of q31_to_x group
*/

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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: 27. January 2017
* $Revision: V.1.5.1
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2017 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 length of the input vector
* @return none.
*
* \par Description:
*
* 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(
q31_t * pSrc,
q7_t * pDst,
uint32_t blockSize)
{
q31_t *pIn = pSrc; /* Src pointer */
uint32_t blkCnt; /* loop counter */
#if defined (ARM_MATH_DSP)
/* Run the below code for Cortex-M4 and Cortex-M3 */
q31_t in1, in2, in3, in4;
q7_t out1, out2, out3, out4;
/*loop Unrolling */
blkCnt = blockSize >> 2U;
/* First part of the processing with loop unrolling. Compute 4 outputs at a time.
** a second loop below computes the remaining 1 to 3 samples. */
while (blkCnt > 0U)
{
/* C = (q7_t) A >> 24 */
/* convert from q31 to q7 and then store the results in the destination buffer */
in1 = *pIn++;
in2 = *pIn++;
in3 = *pIn++;
in4 = *pIn++;
out1 = (q7_t) (in1 >> 24);
out2 = (q7_t) (in2 >> 24);
out3 = (q7_t) (in3 >> 24);
out4 = (q7_t) (in4 >> 24);
*__SIMD32(pDst)++ = __PACKq7(out1, out2, out3, out4);
/* 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 % 0x4U;
#else
/* Run the below code for Cortex-M0 */
/* Loop over blockSize number of values */
blkCnt = blockSize;
#endif /* #if defined (ARM_MATH_DSP) */
while (blkCnt > 0U)
{
/* C = (q7_t) A >> 24 */
/* convert from q31 to q7 and then store the results in the destination buffer */
*pDst++ = (q7_t) (*pIn++ >> 24);
/* Decrement the loop counter */
blkCnt--;
}
}
/**
* @} end of q31_to_x group
*/

119
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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: 27. January 2017
* $Revision: V.1.5.1
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2017 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 length of the input vector
* @return none.
*
* \par Description:
*
* The equation used for the conversion process is:
*
* <pre>
* pDst[n] = (float32_t) pSrc[n] / 128; 0 <= n < blockSize.
* </pre>
*
*/
void arm_q7_to_float(
q7_t * pSrc,
float32_t * pDst,
uint32_t blockSize)
{
q7_t *pIn = pSrc; /* Src pointer */
uint32_t blkCnt; /* loop counter */
#if defined (ARM_MATH_DSP)
/* Run the below code for Cortex-M4 and Cortex-M3 */
/*loop Unrolling */
blkCnt = blockSize >> 2U;
/* First part of the processing with loop unrolling. Compute 4 outputs at a time.
** a second loop below computes the remaining 1 to 3 samples. */
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);
*pDst++ = ((float32_t) * pIn++ / 128.0f);
*pDst++ = ((float32_t) * pIn++ / 128.0f);
*pDst++ = ((float32_t) * pIn++ / 128.0f);
/* 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 % 0x4U;
#else
/* Run the below code for Cortex-M0 */
/* Loop over blockSize number of values */
blkCnt = blockSize;
#endif /* #if defined (ARM_MATH_DSP) */
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--;
}
}
/**
* @} end of q7_to_x group
*/

145
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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: 27. January 2017
* $Revision: V.1.5.1
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2017 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 length of the input vector
* @return none.
*
* \par Description:
*
* 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(
q7_t * pSrc,
q15_t * pDst,
uint32_t blockSize)
{
q7_t *pIn = pSrc; /* Src pointer */
uint32_t blkCnt; /* loop counter */
#if defined (ARM_MATH_DSP)
q31_t in;
q31_t in1, in2;
q31_t out1, out2;
/* Run the below code for Cortex-M4 and Cortex-M3 */
/*loop Unrolling */
blkCnt = blockSize >> 2U;
/* First part of the processing with loop unrolling. Compute 4 outputs at a time.
** a second loop below computes the remaining 1 to 3 samples. */
while (blkCnt > 0U)
{
/* C = (q15_t) A << 8 */
/* convert from q7 to q15 and then store the results in the destination buffer */
in = *__SIMD32(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
*__SIMD32(pDst)++ = out1;
*__SIMD32(pDst)++ = out2;
/* 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 % 0x4U;
#else
/* Run the below code for Cortex-M0 */
/* Loop over blockSize number of values */
blkCnt = blockSize;
#endif /* #if defined (ARM_MATH_DSP) */
while (blkCnt > 0U)
{
/* C = (q15_t) A << 8 */
/* convert from q7 to q15 and then store the results in the destination buffer */
*pDst++ = (q15_t) * pIn++ << 8;
/* Decrement the loop counter */
blkCnt--;
}
}
/**
* @} end of q7_to_x group
*/

130
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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: 27. January 2017
* $Revision: V.1.5.1
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2017 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 length of the input vector
* @return none.
*
* \par Description:
*
* 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(
q7_t * pSrc,
q31_t * pDst,
uint32_t blockSize)
{
q7_t *pIn = pSrc; /* Src pointer */
uint32_t blkCnt; /* loop counter */
#if defined (ARM_MATH_DSP)
q31_t in;
/* Run the below code for Cortex-M4 and Cortex-M3 */
/*loop Unrolling */
blkCnt = blockSize >> 2U;
/* First part of the processing with loop unrolling. Compute 4 outputs at a time.
** a second loop below computes the remaining 1 to 3 samples. */
while (blkCnt > 0U)
{
/* C = (q31_t) A << 24 */
/* convert from q7 to q31 and then store the results in the destination buffer */
in = *__SIMD32(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 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 % 0x4U;
#else
/* Run the below code for Cortex-M0 */
/* Loop over blockSize number of values */
blkCnt = blockSize;
#endif /* #if defined (ARM_MATH_DSP) */
while (blkCnt > 0U)
{
/* C = (q31_t) A << 24 */
/* convert from q7 to q31 and then store the results in the destination buffer */
*pDst++ = (q31_t) * pIn++ << 24;
/* Decrement the loop counter */
blkCnt--;
}
}
/**
* @} end of q7_to_x group
*/