00001 /* ---------------------------------------------------------------------- 00002 * Copyright (C) 2010 ARM Limited. All rights reserved. 00003 * 00004 * $Date: 15. July 2011 00005 * $Revision: V1.0.10 00006 * 00007 * Project: CMSIS DSP Library 00008 * Title: arm_fill_f32.c 00009 * 00010 * Description: Fills a constant value into a floating-point vector. 00011 * 00012 * Target Processor: Cortex-M4/Cortex-M3/Cortex-M0 00013 * 00014 * Version 1.0.10 2011/7/15 00015 * Big Endian support added and Merged M0 and M3/M4 Source code. 00016 * 00017 * Version 1.0.3 2010/11/29 00018 * Re-organized the CMSIS folders and updated documentation. 00019 * 00020 * Version 1.0.2 2010/11/11 00021 * Documentation updated. 00022 * 00023 * Version 1.0.1 2010/10/05 00024 * Production release and review comments incorporated. 00025 * 00026 * Version 1.0.0 2010/09/20 00027 * Production release and review comments incorporated. 00028 * 00029 * Version 0.0.7 2010/06/10 00030 * Misra-C changes done 00031 * ---------------------------------------------------------------------------- */ 00032 00033 #include "arm_math.h" 00034 00066 void arm_fill_f32( 00067 float32_t value, 00068 float32_t * pDst, 00069 uint32_t blockSize) 00070 { 00071 uint32_t blkCnt; /* loop counter */ 00072 00073 #ifndef ARM_MATH_CM0 00074 00075 /* Run the below code for Cortex-M4 and Cortex-M3 */ 00076 00077 /*loop Unrolling */ 00078 blkCnt = blockSize >> 2u; 00079 00080 /* First part of the processing with loop unrolling. Compute 4 outputs at a time. 00081 ** a second loop below computes the remaining 1 to 3 samples. */ 00082 while(blkCnt > 0u) 00083 { 00084 /* C = value */ 00085 /* Fill the value in the destination buffer */ 00086 *pDst++ = value; 00087 *pDst++ = value; 00088 *pDst++ = value; 00089 *pDst++ = value; 00090 00091 /* Decrement the loop counter */ 00092 blkCnt--; 00093 } 00094 00095 /* If the blockSize is not a multiple of 4, compute any remaining output samples here. 00096 ** No loop unrolling is used. */ 00097 blkCnt = blockSize % 0x4u; 00098 00099 #else 00100 00101 /* Run the below code for Cortex-M0 */ 00102 00103 /* Loop over blockSize number of values */ 00104 blkCnt = blockSize; 00105 00106 #endif /* #ifndef ARM_MATH_CM0 */ 00107 00108 00109 while(blkCnt > 0u) 00110 { 00111 /* C = value */ 00112 /* Fill the value in the destination buffer */ 00113 *pDst++ = value; 00114 00115 /* Decrement the loop counter */ 00116 blkCnt--; 00117 } 00118 } 00119