modf.c

#include "lib/math.h"
 
double modf(double value, double* intPart) {
    if (intPart != NULL) {
        *intPart = (value >= 0) ? floor(value) : ceil(value);
        return value - (*intPart);
    }
    return 0.0f;
}
 
double fmod(double dividend, double divisor) {
    if (divisor == 0) {
        return 0.0;
    }
 
    double quotient = dividend / divisor;
    int intPart = (int) quotient; // Integer part
    double fractionalPart = quotient - intPart; // Fractional part
 
    double result = fractionalPart * divisor;
    return result;
}