diff options
Diffstat (limited to 'hid-dials/Drivers/CMSIS/DSP/Source/BasicMathFunctions/arm_scale_q15.c')
-rw-r--r-- | hid-dials/Drivers/CMSIS/DSP/Source/BasicMathFunctions/arm_scale_q15.c | 150 |
1 files changed, 0 insertions, 150 deletions
diff --git a/hid-dials/Drivers/CMSIS/DSP/Source/BasicMathFunctions/arm_scale_q15.c b/hid-dials/Drivers/CMSIS/DSP/Source/BasicMathFunctions/arm_scale_q15.c deleted file mode 100644 index f1d3063..0000000 --- a/hid-dials/Drivers/CMSIS/DSP/Source/BasicMathFunctions/arm_scale_q15.c +++ /dev/null @@ -1,150 +0,0 @@ -/* ----------------------------------------------------------------------
- * Project: CMSIS DSP Library
- * Title: arm_scale_q15.c
- * Description: Multiplies a Q15 vector by a scalar
- *
- * $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 groupMath
- */
-
-/**
- * @addtogroup scale
- * @{
- */
-
-/**
- * @brief Multiplies a Q15 vector by a scalar.
- * @param[in] *pSrc points to the input vector
- * @param[in] scaleFract fractional portion of the scale value
- * @param[in] shift number of bits to shift the result by
- * @param[out] *pDst points to the output vector
- * @param[in] blockSize number of samples in the vector
- * @return none.
- *
- * <b>Scaling and Overflow Behavior:</b>
- * \par
- * The input data <code>*pSrc</code> and <code>scaleFract</code> are in 1.15 format.
- * These are multiplied to yield a 2.30 intermediate result and this is shifted with saturation to 1.15 format.
- */
-
-
-void arm_scale_q15(
- q15_t * pSrc,
- q15_t scaleFract,
- int8_t shift,
- q15_t * pDst,
- uint32_t blockSize)
-{
- int8_t kShift = 15 - shift; /* shift to apply after scaling */
- uint32_t blkCnt; /* loop counter */
-
-#if defined (ARM_MATH_DSP)
-
-/* Run the below code for Cortex-M4 and Cortex-M3 */
- q15_t in1, in2, in3, in4;
- q31_t inA1, inA2; /* Temporary variables */
- 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)
- {
- /* Reading 2 inputs from memory */
- inA1 = *__SIMD32(pSrc)++;
- inA2 = *__SIMD32(pSrc)++;
-
- /* C = A * scale */
- /* Scale the inputs and then store the 2 results in the destination buffer
- * in single cycle by packing the outputs */
- out1 = (q31_t) ((q15_t) (inA1 >> 16) * scaleFract);
- out2 = (q31_t) ((q15_t) inA1 * scaleFract);
- out3 = (q31_t) ((q15_t) (inA2 >> 16) * scaleFract);
- out4 = (q31_t) ((q15_t) inA2 * scaleFract);
-
- /* apply shifting */
- out1 = out1 >> kShift;
- out2 = out2 >> kShift;
- out3 = out3 >> kShift;
- out4 = out4 >> kShift;
-
- /* saturate the output */
- in1 = (q15_t) (__SSAT(out1, 16));
- in2 = (q15_t) (__SSAT(out2, 16));
- in3 = (q15_t) (__SSAT(out3, 16));
- in4 = (q15_t) (__SSAT(out4, 16));
-
- /* store the result to destination */
- *__SIMD32(pDst)++ = __PKHBT(in2, in1, 16);
- *__SIMD32(pDst)++ = __PKHBT(in4, in3, 16);
-
- /* 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)
- {
- /* C = A * scale */
- /* Scale the input and then store the result in the destination buffer. */
- *pDst++ = (q15_t) (__SSAT(((*pSrc++) * scaleFract) >> kShift, 16));
-
- /* Decrement the loop counter */
- blkCnt--;
- }
-
-#else
-
- /* Run the below code for Cortex-M0 */
-
- /* Initialize blkCnt with number of samples */
- blkCnt = blockSize;
-
- while (blkCnt > 0U)
- {
- /* C = A * scale */
- /* Scale the input and then store the result in the destination buffer. */
- *pDst++ = (q15_t) (__SSAT(((q31_t) * pSrc++ * scaleFract) >> kShift, 16));
-
- /* Decrement the loop counter */
- blkCnt--;
- }
-
-#endif /* #if defined (ARM_MATH_DSP) */
-
-}
-
-/**
- * @} end of scale group
- */
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