math.c

// Math library by NDRAEY
 
#include "lib/math.h"
 
size_t fac(size_t x) {
    size_t a = 1;
 
    for (size_t i = 1; i < x + 1; i++) {
        a *= i;
    }
    
    return a;
}
 
size_t ipow(size_t val, size_t exp) {
    size_t value = val;
    for (size_t i = 1; i < exp; i++) {
        value *= val;
    }
 
    return value;
}
 
double deg2rad(double deg) {
    return deg * (PI / 180.0);
}
 
double rad2deg(double rad) {
    return rad * (180.0 / PI);
}