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FeGo_4706256
Employee
Employee
5 questions asked 10 sign-ins 5 sign-ins
hi Dave team,

i am trying CMSIS_DSP App and so copying sample code available from this App ( .. cos(x)*cos(x) + sin(x)*sin(x) = 1)


then i generated code. when i compile code, got an error as shown below. anyone could advise ?

../main.c:13:22: fatal error: arm_math.h: No such file or directory

Best Regards,
Felix
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2 Replies
jferreira
Employee
Employee
First like received 750 replies posted 500 replies posted
Hi,

The usage section example of the CMSIS DSP APP is as below and implements the "sin(x) * sin(x) + cos(x) * cos(x)"
#include 


// 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;

int main(void)
{
float32_t diff;
uint32_t i;

for (i = 0; i < blockSize; i++)
{
cosOutput = arm_cos_f32(testInput_f32);
sinOutput = arm_sin_f32(testInput_f32);

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);

}
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FeGo_4706256
Employee
Employee
5 questions asked 10 sign-ins 5 sign-ins
Hi,
Thanks for help.

BR,
Teman_XMC
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