CMSIS DSP Software Library: arm_mult_f32.c Source File Main Page Modules Data Structures Files Examples File List Globals arm_mult_f32.c Go to the documentation of this file.00001 /* ---------------------------------------------------------------------- 00002 * Copyright (C) 2010 ARM Limited. All rights reserved. 00003 * 00004 * $Date: 29. November 2010 00005 * $Revision: V1.0.3 00006 * 00007 * Project: CMSIS DSP Library 00008 * Title: arm_mult_f32.c 00009 * 00010 * Description: Floating-point vector multiplication. 00011 * 00012 * Target Processor: Cortex-M4/Cortex-M3 00013 * 00014 * Version 1.0.3 2010/11/29 00015 * Re-organized the CMSIS folders and updated documentation. 00016 * 00017 * Version 1.0.2 2010/11/11 00018 * Documentation updated. 00019 * 00020 * Version 1.0.1 2010/10/05 00021 * Production release and review comments incorporated. 00022 * 00023 * Version 1.0.0 2010/09/20 00024 * Production release and review comments incorporated. 00025 * 00026 * Version 0.0.5 2010/04/26 00027 * incorporated review comments and updated with latest CMSIS layer 00028 * 00029 * Version 0.0.3 2010/03/10 00030 * Initial version 00031 * -------------------------------------------------------------------- */ 00032 00033 #include "arm_math.h" 00034 00065 void arm_mult_f32( 00066 float32_t * pSrcA, 00067 float32_t * pSrcB, 00068 float32_t * pDst, 00069 uint32_t blockSize) 00070 { 00071 uint32_t blkCnt; /* loop counters */ 00072 00073 /* loop Unrolling */ 00074 blkCnt = blockSize >> 2u; 00075 00076 /* First part of the processing with loop unrolling. Compute 4 outputs at a time. 00077 ** a second loop below computes the remaining 1 to 3 samples. */ 00078 while(blkCnt > 0u) 00079 { 00080 /* C = A * B */ 00081 /* Multiply the inputs and store the results in output buffer */ 00082 *pDst++ = (*pSrcA++) * (*pSrcB++); 00083 *pDst++ = (*pSrcA++) * (*pSrcB++); 00084 *pDst++ = (*pSrcA++) * (*pSrcB++); 00085 *pDst++ = (*pSrcA++) * (*pSrcB++); 00086 00087 /* Decrement the blockSize loop counter */ 00088 blkCnt--; 00089 } 00090 00091 /* If the blockSize is not a multiple of 4, compute any remaining output samples here. 00092 ** No loop unrolling is used. */ 00093 blkCnt = blockSize % 0x4u; 00094 00095 while(blkCnt > 0u) 00096 { 00097 /* C = A * B */ 00098 /* Multiply the inputs and store the results in output buffer */ 00099 *pDst++ = (*pSrcA++) * (*pSrcB++); 00100 00101 /* Decrement the blockSize loop counter */ 00102 blkCnt--; 00103 } 00104 } 00105  All Data Structures Files Functions Variables Typedefs Enumerations Enumerator Defines Generated on Mon Nov 29 2010 17:19:57 for CMSIS DSP Software Library by  1.7.2

Wyszukiwarka

Podobne podstrony:
arm mat mult ?2? source
arm conv ?2? source
arm mult q31? source
arm power ?2? source
arm ?d ?2? source
arm scale ?2? source
arm mult q15? source
arm mult ?2?
arm correlate ?2? source
arm ?s ?2? source
arm offset ?2? source
arm mean ?2? source
arm cos ?2? source
arm mult q7? source
arm std ?2? source
arm negate ?2? source
arm ?t4 ?2? source
arm min ?2? source
arm fill ?2? source

więcej podobnych podstron