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author | Ali Labbene <ali.labbene@st.com> | 2019-12-11 08:59:21 +0100 |
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committer | Ali Labbene <ali.labbene@st.com> | 2019-12-16 16:35:24 +0100 |
commit | 9f95ff5b6ba01db09552b84a0ab79607060a2666 (patch) | |
tree | 8a6e0dda832555c692307869aed49d07ee7facfe /DSP_Lib/Examples/arm_variance_example/ARM | |
parent | 76177aa280494bb36d7a0bcbda1078d4db717020 (diff) | |
download | st-cmsis-core-lowfat-9f95ff5b6ba01db09552b84a0ab79607060a2666.tar.gz st-cmsis-core-lowfat-9f95ff5b6ba01db09552b84a0ab79607060a2666.tar.bz2 st-cmsis-core-lowfat-9f95ff5b6ba01db09552b84a0ab79607060a2666.zip |
Official ARM version: v5.4.0
Add CMSIS V5.4.0, please refer to index.html available under \docs folder.
Note: content of \CMSIS\Core\Include has been copied under \Include to keep the same structure
used in existing projects, and thus avoid projects mass update
Note: the following components have been removed from ARM original delivery (as not used in ST packages)
- CMSIS_EW2018.pdf
- .gitattributes
- .gitignore
- \Device
- \CMSIS
- \CoreValidation
- \DAP
- \Documentation
- \DoxyGen
- \Driver
- \Pack
- \RTOS\CMSIS_RTOS_Tutorial.pdf
- \RTOS\RTX
- \RTOS\Template
- \RTOS2\RTX
- \Utilities
- All ARM/GCC projects files are deleted from \DSP, \RTOS and \RTOS2
Change-Id: Ia026c3f0f0d016627a4fb5a9032852c33d24b4d3
Diffstat (limited to 'DSP_Lib/Examples/arm_variance_example/ARM')
-rw-r--r-- | DSP_Lib/Examples/arm_variance_example/ARM/Abstract.txt | 4 | ||||
-rw-r--r-- | DSP_Lib/Examples/arm_variance_example/ARM/arm_variance_example_f32.c | 204 |
2 files changed, 0 insertions, 208 deletions
diff --git a/DSP_Lib/Examples/arm_variance_example/ARM/Abstract.txt b/DSP_Lib/Examples/arm_variance_example/ARM/Abstract.txt deleted file mode 100644 index 931d02d..0000000 --- a/DSP_Lib/Examples/arm_variance_example/ARM/Abstract.txt +++ /dev/null @@ -1,4 +0,0 @@ -CMSIS DSP_Lib example arm_variance_example for - Cortex-M0, Cortex-M3 and Cortex-M4 with FPU - -The example is configured for uVision Simulator diff --git a/DSP_Lib/Examples/arm_variance_example/ARM/arm_variance_example_f32.c b/DSP_Lib/Examples/arm_variance_example/ARM/arm_variance_example_f32.c deleted file mode 100644 index f2188e3..0000000 --- a/DSP_Lib/Examples/arm_variance_example/ARM/arm_variance_example_f32.c +++ /dev/null @@ -1,204 +0,0 @@ -/* ---------------------------------------------------------------------- -* Copyright (C) 2010-2012 ARM Limited. All rights reserved. -* -* $Date: 17. January 2013 -* $Revision: V1.4.0 -* -* Project: CMSIS DSP Library -* Title: arm_variance_example_f32.c -* -* Description: Example code demonstrating variance calculation of input sequence. -* -* Target Processor: Cortex-M4/Cortex-M3 -* -* Redistribution and use in source and binary forms, with or without -* modification, are permitted provided that the following conditions -* are met: -* - Redistributions of source code must retain the above copyright -* notice, this list of conditions and the following disclaimer. -* - Redistributions in binary form must reproduce the above copyright -* notice, this list of conditions and the following disclaimer in -* the documentation and/or other materials provided with the -* distribution. -* - Neither the name of ARM LIMITED nor the names of its contributors -* may be used to endorse or promote products derived from this -* software without specific prior written permission. -* -* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS -* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE -* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, -* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, -* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; -* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER -* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT -* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN -* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE -* POSSIBILITY OF SUCH DAMAGE. -* -------------------------------------------------------------------- */ - -/** - * @ingroup groupExamples - */ - -/** - * @defgroup VarianceExample Variance Example - * - * \par Description: - * \par - * Demonstrates the use of Basic Math and Support Functions to calculate the variance of an - * input sequence with N samples. Uniformly distributed white noise is taken as input. - * - * \par Algorithm: - * \par - * The variance of a sequence is the mean of the squared deviation of the sequence from its mean. - * \par - * This is denoted by the following equation: - * <pre> variance = ((x[0] - x') * (x[0] - x') + (x[1] - x') * (x[1] - x') + ... + * (x[n-1] - x') * (x[n-1] - x')) / (N-1)</pre> - * where, <code>x[n]</code> is the input sequence, <code>N</code> is the number of input samples, and - * <code>x'</code> is the mean value of the input sequence, <code>x[n]</code>. - * \par - * The mean value <code>x'</code> is defined as: - * <pre> x' = (x[0] + x[1] + ... + x[n-1]) / N</pre> - * - * \par Block Diagram: - * \par - * \image html Variance.gif - * - * - * \par Variables Description: - * \par - * \li \c testInput_f32 points to the input data - * \li \c wire1, \c wir2, \c wire3 temporary buffers - * \li \c blockSize number of samples processed at a time - * \li \c refVarianceOut reference variance value - * - * \par CMSIS DSP Software Library Functions Used: - * \par - * - arm_dot_prod_f32() - * - arm_mult_f32() - * - arm_sub_f32() - * - arm_fill_f32() - * - arm_copy_f32() - * - * <b> Refer </b> - * \link arm_variance_example_f32.c \endlink - * - */ - - -/** \example arm_variance_example_f32.c - */ -#include <math.h> -#include "arm_math.h" - -/* ---------------------------------------------------------------------- -* Defines each of the tests performed -* ------------------------------------------------------------------- */ -#define MAX_BLOCKSIZE 32 -#define DELTA (0.000001f) - - -/* ---------------------------------------------------------------------- -* Declare I/O buffers -* ------------------------------------------------------------------- */ -float32_t wire1[MAX_BLOCKSIZE]; -float32_t wire2[MAX_BLOCKSIZE]; -float32_t wire3[MAX_BLOCKSIZE]; - -/* ---------------------------------------------------------------------- -* Test input data for Floating point Variance example for 32-blockSize -* Generated by the MATLAB randn() function -* ------------------------------------------------------------------- */ - -float32_t testInput_f32[32] = -{ - -0.432564811528221, -1.665584378238097, 0.125332306474831, 0.287676420358549, - -1.146471350681464, 1.190915465642999, 1.189164201652103, -0.037633276593318, - 0.327292361408654, 0.174639142820925, -0.186708577681439, 0.725790548293303, - -0.588316543014189, 2.183185818197101, -0.136395883086596, 0.113931313520810, - 1.066768211359189, 0.059281460523605, -0.095648405483669, -0.832349463650022, - 0.294410816392640, -1.336181857937804, 0.714324551818952, 1.623562064446271, - -0.691775701702287, 0.857996672828263, 1.254001421602532, -1.593729576447477, - -1.440964431901020, 0.571147623658178, -0.399885577715363, 0.689997375464345 - -}; - -/* ---------------------------------------------------------------------- -* Declare Global variables -* ------------------------------------------------------------------- */ -uint32_t blockSize = 32; -float32_t refVarianceOut = 0.903941793931839; - -/* ---------------------------------------------------------------------- -* Variance calculation test -* ------------------------------------------------------------------- */ - -int32_t main(void) -{ - arm_status status; - float32_t mean, oneByBlockSize; - float32_t variance; - float32_t diff; - - status = ARM_MATH_SUCCESS; - - /* Calculation of mean value of input */ - - /* x' = 1/blockSize * (x(0)* 1 + x(1) * 1 + ... + x(n-1) * 1) */ - - /* Fill wire1 buffer with 1.0 value */ - arm_fill_f32(1.0, wire1, blockSize); - - /* Calculate the dot product of wire1 and wire2 */ - /* (x(0)* 1 + x(1) * 1 + ...+ x(n-1) * 1) */ - arm_dot_prod_f32(testInput_f32, wire1, blockSize, &mean); - - /* Calculation of 1/blockSize */ - oneByBlockSize = 1.0 / (blockSize); - - /* 1/blockSize * (x(0)* 1 + x(1) * 1 + ... + x(n-1) * 1) */ - arm_mult_f32(&mean, &oneByBlockSize, &mean, 1); - - - /* Calculation of variance value of input */ - - /* (1/blockSize) * (x(0) - x') * (x(0) - x') + (x(1) - x') * (x(1) - x') + ... + (x(n-1) - x') * (x(n-1) - x') */ - - /* Fill wire2 with mean value x' */ - arm_fill_f32(mean, wire2, blockSize); - - /* wire3 contains (x-x') */ - arm_sub_f32(testInput_f32, wire2, wire3, blockSize); - - /* wire2 contains (x-x') */ - arm_copy_f32(wire3, wire2, blockSize); - - /* (x(0) - x') * (x(0) - x') + (x(1) - x') * (x(1) - x') + ... + (x(n-1) - x') * (x(n-1) - x') */ - arm_dot_prod_f32(wire2, wire3, blockSize, &variance); - - /* Calculation of 1/blockSize */ - oneByBlockSize = 1.0 / (blockSize - 1); - - /* Calculation of variance */ - arm_mult_f32(&variance, &oneByBlockSize, &variance, 1); - - /* absolute value of difference between ref and test */ - diff = fabsf(refVarianceOut - variance); - - /* Comparison of variance value with reference */ - if(diff > DELTA) - { - status = ARM_MATH_TEST_FAILURE; - } - - if( status != ARM_MATH_SUCCESS) - { - while(1); - } - - while(1); /* main function does not return */ -} - - /** \endlink */ |