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Diffstat (limited to 'fw/cdc-dials/Drivers/CMSIS/DSP/Examples/ARM/arm_dotproduct_example/arm_dotproduct_example_f32.c')
| -rw-r--r-- | fw/cdc-dials/Drivers/CMSIS/DSP/Examples/ARM/arm_dotproduct_example/arm_dotproduct_example_f32.c | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/fw/cdc-dials/Drivers/CMSIS/DSP/Examples/ARM/arm_dotproduct_example/arm_dotproduct_example_f32.c b/fw/cdc-dials/Drivers/CMSIS/DSP/Examples/ARM/arm_dotproduct_example/arm_dotproduct_example_f32.c new file mode 100644 index 0000000..5a05071 --- /dev/null +++ b/fw/cdc-dials/Drivers/CMSIS/DSP/Examples/ARM/arm_dotproduct_example/arm_dotproduct_example_f32.c @@ -0,0 +1,178 @@ +/* ----------------------------------------------------------------------
+* Copyright (C) 2010-2012 ARM Limited. All rights reserved.
+*
+* $Date: 17. January 2013
+* $Revision: V1.4.0
+*
+* Project: CMSIS DSP Library
+* Title: arm_dotproduct_example_f32.c
+*
+* Description: Example code computing dot product of two vectors.
+*
+* 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 DotproductExample Dot Product Example
+ *
+ * \par Description:
+ * \par
+ * Demonstrates the use of the Multiply and Add functions to perform the dot product.
+ * The dot product of two vectors is obtained by multiplying corresponding elements
+ * and summing the products.
+
+ * \par Algorithm:
+ * \par
+ * The two input vectors \c A and \c B with length \c n, are multiplied element-by-element
+ * and then added to obtain dot product.
+ * \par
+ * This is denoted by the following equation:
+ * <pre> dotProduct = A[0] * B[0] + A[1] * B[1] + ... + A[n-1] * B[n-1]</pre>
+ *
+ * \par Block Diagram:
+ * \par
+ * \image html dotProduct.gif
+ *
+ * \par Variables Description:
+ * \par
+ * \li \c srcA_buf_f32 points to first input vector
+ * \li \c srcB_buf_f32 points to second input vector
+ * \li \c testOutput stores dot product of the two input vectors.
+ *
+ * \par CMSIS DSP Software Library Functions Used:
+ * \par
+ * - arm_mult_f32()
+ * - arm_add_f32()
+ *
+ * <b> Refer </b>
+ * \link arm_dotproduct_example_f32.c \endlink
+ *
+ */
+
+
+/** \example arm_dotproduct_example_f32.c
+ */
+
+#include <math.h>
+#include "arm_math.h"
+
+/* ----------------------------------------------------------------------
+* Defines each of the tests performed
+* ------------------------------------------------------------------- */
+#define MAX_BLOCKSIZE 32
+#define DELTA (0.000001f)
+
+/* ----------------------------------------------------------------------
+* Test input data for Floating point Dot Product example for 32-blockSize
+* Generated by the MATLAB randn() function
+* ------------------------------------------------------------------- */
+/* ----------------------------------------------------------------------
+** Test input data of srcA for blockSize 32
+** ------------------------------------------------------------------- */
+float32_t srcA_buf_f32[MAX_BLOCKSIZE] =
+{
+ -0.4325648115282207, -1.6655843782380970, 0.1253323064748307,
+ 0.2876764203585489, -1.1464713506814637, 1.1909154656429988,
+ 1.1891642016521031, -0.0376332765933176, 0.3272923614086541,
+ 0.1746391428209245, -0.1867085776814394, 0.7257905482933027,
+ -0.5883165430141887, 2.1831858181971011, -0.1363958830865957,
+ 0.1139313135208096, 1.0667682113591888, 0.0592814605236053,
+ -0.0956484054836690, -0.8323494636500225, 0.2944108163926404,
+ -1.3361818579378040, 0.7143245518189522, 1.6235620644462707,
+ -0.6917757017022868, 0.8579966728282626, 1.2540014216025324,
+ -1.5937295764474768, -1.4409644319010200, 0.5711476236581780,
+ -0.3998855777153632, 0.6899973754643451
+};
+
+/* ----------------------------------------------------------------------
+** Test input data of srcB for blockSize 32
+** ------------------------------------------------------------------- */
+float32_t srcB_buf_f32[MAX_BLOCKSIZE] =
+{
+ 1.7491401329284098, 0.1325982188803279, 0.3252281811989881,
+ -0.7938091410349637, 0.3149236145048914, -0.5272704888029532,
+ 0.9322666565031119, 1.1646643544607362, -2.0456694357357357,
+ -0.6443728590041911, 1.7410657940825480, 0.4867684246821860,
+ 1.0488288293660140, 1.4885752747099299, 1.2705014969484090,
+ -1.8561241921210170, 2.1343209047321410, 1.4358467535865909,
+ -0.9173023332875400, -1.1060770780029008, 0.8105708062681296,
+ 0.6985430696369063, -0.4015827425012831, 1.2687512030669628,
+ -0.7836083053674872, 0.2132664971465569, 0.7878984786088954,
+ 0.8966819356782295, -0.1869172943544062, 1.0131816724341454,
+ 0.2484350696132857, 0.0596083377937976
+};
+
+/* Reference dot product output */
+float32_t refDotProdOut = 5.9273644806352142;
+
+/* ----------------------------------------------------------------------
+* Declare Global variables
+* ------------------------------------------------------------------- */
+float32_t multOutput[MAX_BLOCKSIZE]; /* Intermediate output */
+float32_t testOutput; /* Final ouput */
+
+arm_status status; /* Status of the example */
+
+int32_t main(void)
+{
+ uint32_t i; /* Loop counter */
+ float32_t diff; /* Difference between reference and test outputs */
+
+ /* Multiplication of two input buffers */
+ arm_mult_f32(srcA_buf_f32, srcB_buf_f32, multOutput, MAX_BLOCKSIZE);
+
+ /* Accumulate the multiplication output values to
+ get the dot product of the two inputs */
+ for(i=0; i< MAX_BLOCKSIZE; i++)
+ {
+ arm_add_f32(&testOutput, &multOutput[i], &testOutput, 1);
+ }
+
+ /* absolute value of difference between ref and test */
+ diff = fabsf(refDotProdOut - testOutput);
+
+ /* Comparison of dot product value with reference */
+ if (diff > DELTA)
+ {
+ status = ARM_MATH_TEST_FAILURE;
+ }
+
+ if ( status == ARM_MATH_TEST_FAILURE)
+ {
+ while (1);
+ }
+
+ while (1); /* main function does not return */
+}
+
+ /** \endlink */
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