fix_point.h, Beuth

gistfile1.cpp

#ifndef FIX_POINT_H
#define FIX_POINT_H

#include <cmath>

/*
 * fix_point.h
 *
 * Finn-Lennart Heemeyer, 791440.Beuth
 */


/*
 * define structure
 */
struct fix_point {
  float value;
};

/*
 * pseudo constructor
 * (classes propably lat0r this semester)
 */
fix_point to_fix_point(float fl) {
  fix_point fp;
  fp.value = fl;

  return fp;
}

/*
 * conversion
 */
float to_float(fix_point fp) {
  return fp.value;
}

int to_int(fix_point fp) {
  return (int) fp.value;
}

/*
 * logical functions
 */

bool equals(fix_point fp1, fix_point fp2) {
  return fp1.value == fp2.value;
}

bool less_than(fix_point fp1, fix_point fp2) {
  return fp1.value < fp2.value;
}

bool less_or_equal_than(fix_point fp1, fix_point fp2) {
  return fp1.value <= fp2.value;
}

bool more_than(fix_point fp1, fix_point fp2) {
  return fp1.value > fp2.value;
}

bool more_or_equal_than(fix_point fp1, fix_point fp2) {
  return fp1.value >= fp2.value;
}

/*
 * arithmetic functions
 */

fix_point add(fix_point fp1, fix_point fp2) {
  fix_point fp;
  fp.value = fp1.value + fp2.value;

  return fp;
}

fix_point sub(fix_point fp1, fix_point fp2) {
  fix_point fp;
  fp.value = fp1.value - fp2.value;

  return fp;
}

fix_point mul(fix_point fp1, fix_point fp2) {
  fix_point fp;
  fp.value = fp1.value * fp2.value;

  return fp;
}

fix_point div(fix_point fp1, fix_point fp2) {
  fix_point fp;
  fp.value = fp1.value / fp2.value;

  return fp;
}

/*
 * floor & frac
 */

float floor(fix_point fp) {
  return std::floor(fp.value);
}

float frac(fix_point fp) {
  return fp.value - (int) fp.value;
}

/*
 * I hope you had some fun reading this code, see you on github:
 *
 * github.com/tonekk
 */

#endif