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Diffstat (limited to 'fw/midi-dials/Drivers/CMSIS/DSP/Examples/ARM/arm_sin_cos_example/arm_sin_cos_example_f32.c')
| -rw-r--r-- | fw/midi-dials/Drivers/CMSIS/DSP/Examples/ARM/arm_sin_cos_example/arm_sin_cos_example_f32.c | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/fw/midi-dials/Drivers/CMSIS/DSP/Examples/ARM/arm_sin_cos_example/arm_sin_cos_example_f32.c b/fw/midi-dials/Drivers/CMSIS/DSP/Examples/ARM/arm_sin_cos_example/arm_sin_cos_example_f32.c new file mode 100644 index 0000000..7e2eb00 --- /dev/null +++ b/fw/midi-dials/Drivers/CMSIS/DSP/Examples/ARM/arm_sin_cos_example/arm_sin_cos_example_f32.c @@ -0,0 +1,161 @@ +/* ----------------------------------------------------------------------
+* Copyright (C) 2010-2012 ARM Limited. All rights reserved.
+*
+* $Date: 12. March 2014
+* $Revision: V1.4.3
+*
+* Project: CMSIS DSP Library
+* Title: arm_sin_cos_example_f32.c
+*
+* Description: Example code demonstrating sin and cos calculation of input signal.
+*
+* 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 SinCosExample SineCosine Example
+ *
+ * \par Description:
+ * \par
+ * Demonstrates the Pythagorean trignometric identity with the use of Cosine, Sine, Vector
+ * Multiplication, and Vector Addition functions.
+ *
+ * \par Algorithm:
+ * \par
+ * Mathematically, the Pythagorean trignometric identity is defined by the following equation:
+ * <pre>sin(x) * sin(x) + cos(x) * cos(x) = 1</pre>
+ * where \c x is the angle in radians.
+ *
+ * \par Block Diagram:
+ * \par
+ * \image html sinCos.gif
+ *
+ * \par Variables Description:
+ * \par
+ * \li \c testInput_f32 array of input angle in radians
+ * \li \c testOutput stores sum of the squares of sine and cosine values of input angle
+ *
+ * \par CMSIS DSP Software Library Functions Used:
+ * \par
+ * - arm_cos_f32()
+ * - arm_sin_f32()
+ * - arm_mult_f32()
+ * - arm_add_f32()
+ *
+ * <b> Refer </b>
+ * \link arm_sin_cos_example_f32.c \endlink
+ *
+ */
+
+
+/** \example arm_sin_cos_example_f32.c
+ */
+
+#include <math.h>
+#include "arm_math.h"
+
+/* ----------------------------------------------------------------------
+* Defines each of the tests performed
+* ------------------------------------------------------------------- */
+#define MAX_BLOCKSIZE 32
+#define DELTA (0.0001f)
+
+
+/* ----------------------------------------------------------------------
+* Test input data for Floating point sin_cos example for 32-blockSize
+* Generated by the MATLAB randn() function
+* ------------------------------------------------------------------- */
+
+const float32_t testInput_f32[MAX_BLOCKSIZE] =
+{
+ -1.244916875853235400, -4.793533929171324800, 0.360705030233248850, 0.827929644170887320, -3.299532218312426900, 3.427441903227623800, 3.422401784294607700, -0.108308165334010680,
+ 0.941943896490312180, 0.502609575000365850, -0.537345278736373500, 2.088817392965764500, -1.693168684143455700, 6.283185307179590700, -0.392545884746175080, 0.327893095115825040,
+ 3.070147440456292300, 0.170611405884662230, -0.275275082396073010, -2.395492805446796300, 0.847311163536506600, -3.845517018083148800, 2.055818378415868300, 4.672594161978930800,
+ -1.990923030266425800, 2.469305197656249500, 3.609002606064021000, -4.586736582331667500, -4.147080139136136300, 1.643756718868359500, -1.150866392366494800, 1.985805026477433800
+
+
+};
+
+const float32_t testRefOutput_f32 = 1.000000000;
+
+/* ----------------------------------------------------------------------
+* Declare Global variables
+* ------------------------------------------------------------------- */
+uint32_t blockSize = 32;
+float32_t testOutput;
+float32_t cosOutput;
+float32_t sinOutput;
+float32_t cosSquareOutput;
+float32_t sinSquareOutput;
+
+/* ----------------------------------------------------------------------
+* Max magnitude FFT Bin test
+* ------------------------------------------------------------------- */
+
+arm_status status;
+
+int32_t main(void)
+{
+ float32_t diff;
+ uint32_t i;
+
+ for(i=0; i< blockSize; i++)
+ {
+ cosOutput = arm_cos_f32(testInput_f32[i]);
+ sinOutput = arm_sin_f32(testInput_f32[i]);
+
+ arm_mult_f32(&cosOutput, &cosOutput, &cosSquareOutput, 1);
+ arm_mult_f32(&sinOutput, &sinOutput, &sinSquareOutput, 1);
+
+ arm_add_f32(&cosSquareOutput, &sinSquareOutput, &testOutput, 1);
+
+ /* absolute value of difference between ref and test */
+ diff = fabsf(testRefOutput_f32 - testOutput);
+
+ /* Comparison of sin_cos 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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