Arm_sqrt_q31 on a Kinetis K MCU

paljano — Wed, 05 Nov 2014 23:07:43 GMT

Hello guys,

I have a very big Problem. I have to implement the arm_sqrt_q31 on my MCU and I cant find any usefull example how I can use it. I wasted a whole day for trying to implement it succuessfull. Is here anyone who can give an example how I can use that function for getting the square root of 144 or another easy number?

Here is one of my tries:

#include "arm_math.h"

int main(void)

{

uint32_t n;

arm_status status;

status=ARM_MATH_SUCCESS;

int32_t temp4 = 0;

float temp5 = 0;

arm_sqrt_q31(144,&temp4);

arm_q31_to_float(&temp4,&temp5,1);

...

Re: Arm_sqrt_q31 on a Kinetis K MCU

Kan_Li — Fri, 28 Nov 2014 02:29:54 GMT

Hi Eric,

Seem you used this function correctly. what is the issue you met?

Have a great day,
Kan

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Arm_sqrt_q31 on a Kinetis K MCU

Re: Arm_sqrt_q31 on a Kinetis K MCU