fp-test2.c

#include <stdio.h>

#include <stdlib.h>

#include <math.h>

#define FIXEDPT_WBITS 16

#include "fixedptc.h"

#define Q16(f) (int)((f) * (1<<16))

int main(int argc, char **argv)

{

  int a, b, c;

  float result_1;

  float result_2;

  // float calculation

  result_1 = pow(2.9f, 6.24f);

  // fixpoint calculation

  a  = Q16(2.9f);

  b  = Q16(6.24f);

  c  = fixedpt_pow(a, b);

  // convert to float for convenient output

  result_2 = (float)(c)/(float)(1<<16);

  printf("float:    %.6f\n", result_1);

  printf("fixpoint: %.6f\n", result_2);

  return 0;

}