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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/SupportFunctions/arm_q15_to_q7.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/SupportFunctions/arm_q15_to_q7.c')
-rw-r--r-- | src/modules/mathlib/CMSIS/DSP_Lib/Source/SupportFunctions/arm_q15_to_q7.c | 146 |
1 files changed, 0 insertions, 146 deletions
diff --git a/src/modules/mathlib/CMSIS/DSP_Lib/Source/SupportFunctions/arm_q15_to_q7.c b/src/modules/mathlib/CMSIS/DSP_Lib/Source/SupportFunctions/arm_q15_to_q7.c deleted file mode 100644 index 87fe63d9e..000000000 --- a/src/modules/mathlib/CMSIS/DSP_Lib/Source/SupportFunctions/arm_q15_to_q7.c +++ /dev/null @@ -1,146 +0,0 @@ -/* ----------------------------------------------------------------------------
-* Copyright (C) 2010 ARM Limited. All rights reserved.
-*
-* $Date: 15. February 2012
-* $Revision: V1.1.0
-*
-* Project: CMSIS DSP Library
-* Title: arm_q15_to_q7.c
-*
-* Description: Converts the elements of the Q15 vector to Q7 vector.
-*
-* 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.
-* ---------------------------------------------------------------------------- */
-
-#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 */
-
-#ifndef ARM_MATH_CM0
-
- /* 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 /* #ifndef ARM_MATH_CM0 */
-
- 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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