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LETTERmodfULETTER Splits a floating-point value.

Overview
#include <math.h>

fraction = modf(x,integral);

double fraction;
double x;
double *integral;

Portability
ANSI

Description
This function splits the floating-point value "x" in its integral and fractional parts. The fractional part is a number between -1 and +1 without ever reaching these borders. The integral part will be put in the variable "integral" points to.

Returns
The fractional part as a double-precision floating-point value.