modf, modff, modfl - Split a number into its integer and fractional parts

Definition	#include <math.h> double modf(double n, double *i_p); float modff(float n, float *i_p); long double modfl(long double n, long double *i_p); These functions split a floating-point number n into its integral and fractional parts. The result is the signed fraction and the integral part, the latter being returned indirectly via a result parameter i_p.
Return val.	Fractional part of n with sign.
Note	Note that the argument i_p must be a pointer!
Example	The following program resolves the number -456.789 into its integral and fractional parts. #include <math.h> #include <stdio.h> int main(void) { double x, g; x = modf(-456.789, &g); printf("Fraction : %g\nIntegral part : %g\n", x, g); return 0; }
See also	frexp, ldexp