CMSIS DSP library
Dependents: performance_timer Surfboard_ gps2rtty Capstone ... more
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Diff: cmsis_dsp/StatisticsFunctions/arm_std_f32.c
- Revision:
- 5:3762170b6d4d
- Parent:
- 3:7a284390b0ce
--- a/cmsis_dsp/StatisticsFunctions/arm_std_f32.c Mon Jun 23 09:30:09 2014 +0100 +++ b/cmsis_dsp/StatisticsFunctions/arm_std_f32.c Fri Nov 20 08:45:18 2015 +0000 @@ -1,8 +1,8 @@ /* ---------------------------------------------------------------------- -* Copyright (C) 2010-2013 ARM Limited. All rights reserved. +* Copyright (C) 2010-2014 ARM Limited. All rights reserved. * -* $Date: 17. January 2013 -* $Revision: V1.4.1 +* $Date: 19. March 2015 +* $Revision: V.1.4.5 * * Project: CMSIS DSP Library * Title: arm_std_f32.c @@ -86,13 +86,19 @@ float32_t sumOfSquares = 0.0f; /* Sum of squares */ float32_t in; /* input value */ uint32_t blkCnt; /* loop counter */ - + #ifndef ARM_MATH_CM0_FAMILY /* Run the below code for Cortex-M4 and Cortex-M3 */ float32_t meanOfSquares, mean, squareOfMean; + if(blockSize == 1) + { + *pResult = 0; + return; + } + /*loop Unrolling */ blkCnt = blockSize >> 2u; @@ -158,6 +164,12 @@ float32_t squareOfSum; /* Square of Sum */ float32_t var; /* Temporary varaince storage */ + if(blockSize == 1) + { + *pResult = 0; + return; + } + /* Loop over blockSize number of values */ blkCnt = blockSize;