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author | px4dev <px4@purgatory.org> | 2013-05-20 00:30:43 +0200 |
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committer | px4dev <px4@purgatory.org> | 2013-05-20 00:30:43 +0200 |
commit | 5576e321fa8cd027b15deeb15b7ca05541fde4fe (patch) | |
tree | b8a8dac6fab2ecdb72c90ece845112161a52997a /src/modules/mathlib/CMSIS/DSP_Lib/Source/BasicMathFunctions/arm_mult_q15.c | |
parent | 3a1c9f14f68054537657851eacb60d930c3d4221 (diff) | |
download | px4-firmware-5576e321fa8cd027b15deeb15b7ca05541fde4fe.tar.gz px4-firmware-5576e321fa8cd027b15deeb15b7ca05541fde4fe.tar.bz2 px4-firmware-5576e321fa8cd027b15deeb15b7ca05541fde4fe.zip |
Use the new prebuilt-library support to wrap the ARM CMSIS DSP library, and update to the version shipped with CMSIS 3.0 r3p2
Diffstat (limited to 'src/modules/mathlib/CMSIS/DSP_Lib/Source/BasicMathFunctions/arm_mult_q15.c')
-rw-r--r-- | src/modules/mathlib/CMSIS/DSP_Lib/Source/BasicMathFunctions/arm_mult_q15.c | 152 |
1 files changed, 0 insertions, 152 deletions
diff --git a/src/modules/mathlib/CMSIS/DSP_Lib/Source/BasicMathFunctions/arm_mult_q15.c b/src/modules/mathlib/CMSIS/DSP_Lib/Source/BasicMathFunctions/arm_mult_q15.c deleted file mode 100644 index 99d44a4ba..000000000 --- a/src/modules/mathlib/CMSIS/DSP_Lib/Source/BasicMathFunctions/arm_mult_q15.c +++ /dev/null @@ -1,152 +0,0 @@ -/* ----------------------------------------------------------------------
-* Copyright (C) 2010 ARM Limited. All rights reserved.
-*
-* $Date: 15. February 2012
-* $Revision: V1.1.0
-*
-* Project: CMSIS DSP Library
-* Title: arm_mult_q15.c
-*
-* Description: Q15 vector multiplication.
-*
-* Target Processor: Cortex-M4/Cortex-M3/Cortex-M0
-*
-* Version 1.1.0 2012/02/15
-* Updated with more optimizations, bug fixes and minor API changes.
-*
-* Version 1.0.10 2011/7/15
-* Big Endian support added and Merged M0 and M3/M4 Source code.
-*
-* Version 1.0.3 2010/11/29
-* Re-organized the CMSIS folders and updated documentation.
-*
-* Version 1.0.2 2010/11/11
-* Documentation updated.
-*
-* Version 1.0.1 2010/10/05
-* Production release and review comments incorporated.
-*
-* Version 1.0.0 2010/09/20
-* Production release and review comments incorporated.
-*
-* Version 0.0.5 2010/04/26
-* incorporated review comments and updated with latest CMSIS layer
-*
-* Version 0.0.3 2010/03/10
-* Initial version
-* -------------------------------------------------------------------- */
-
-#include "arm_math.h"
-
-/**
- * @ingroup groupMath
- */
-
-/**
- * @addtogroup BasicMult
- * @{
- */
-
-
-/**
- * @brief Q15 vector multiplication
- * @param[in] *pSrcA points to the first input vector
- * @param[in] *pSrcB points to the second input vector
- * @param[out] *pDst points to the output vector
- * @param[in] blockSize number of samples in each vector
- * @return none.
- *
- * <b>Scaling and Overflow Behavior:</b>
- * \par
- * The function uses saturating arithmetic.
- * Results outside of the allowable Q15 range [0x8000 0x7FFF] will be saturated.
- */
-
-void arm_mult_q15(
- q15_t * pSrcA,
- q15_t * pSrcB,
- q15_t * pDst,
- uint32_t blockSize)
-{
- uint32_t blkCnt; /* loop counters */
-
-#ifndef ARM_MATH_CM0
-
-/* Run the below code for Cortex-M4 and Cortex-M3 */
- q31_t inA1, inA2, inB1, inB2; /* temporary input variables */
- q15_t out1, out2, out3, out4; /* temporary output variables */
- q31_t mul1, mul2, mul3, mul4; /* temporary variables */
-
- /* 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)
- {
- /* read two samples at a time from sourceA */
- inA1 = *__SIMD32(pSrcA)++;
- /* read two samples at a time from sourceB */
- inB1 = *__SIMD32(pSrcB)++;
- /* read two samples at a time from sourceA */
- inA2 = *__SIMD32(pSrcA)++;
- /* read two samples at a time from sourceB */
- inB2 = *__SIMD32(pSrcB)++;
-
- /* multiply mul = sourceA * sourceB */
- mul1 = (q31_t) ((q15_t) (inA1 >> 16) * (q15_t) (inB1 >> 16));
- mul2 = (q31_t) ((q15_t) inA1 * (q15_t) inB1);
- mul3 = (q31_t) ((q15_t) (inA2 >> 16) * (q15_t) (inB2 >> 16));
- mul4 = (q31_t) ((q15_t) inA2 * (q15_t) inB2);
-
- /* saturate result to 16 bit */
- out1 = (q15_t) __SSAT(mul1 >> 15, 16);
- out2 = (q15_t) __SSAT(mul2 >> 15, 16);
- out3 = (q15_t) __SSAT(mul3 >> 15, 16);
- out4 = (q15_t) __SSAT(mul4 >> 15, 16);
-
- /* store the result */
-#ifndef ARM_MATH_BIG_ENDIAN
-
- *__SIMD32(pDst)++ = __PKHBT(out2, out1, 16);
- *__SIMD32(pDst)++ = __PKHBT(out4, out3, 16);
-
-#else
-
- *__SIMD32(pDst)++ = __PKHBT(out2, out1, 16);
- *__SIMD32(pDst)++ = __PKHBT(out4, out3, 16);
-
-#endif // #ifndef ARM_MATH_BIG_ENDIAN
-
- /* Decrement the blockSize 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 */
-
- /* Initialize blkCnt with number of samples */
- blkCnt = blockSize;
-
-#endif /* #ifndef ARM_MATH_CM0 */
-
-
- while(blkCnt > 0u)
- {
- /* C = A * B */
- /* Multiply the inputs and store the result in the destination buffer */
- *pDst++ = (q15_t) __SSAT((((q31_t) (*pSrcA++) * (*pSrcB++)) >> 15), 16);
-
- /* Decrement the blockSize loop counter */
- blkCnt--;
- }
-}
-
-/**
- * @} end of BasicMult group
- */
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