MODF

Section: Linux Programmer's Manual (3)
Updated: 2002-07-27
Index Return to Main Contents
 

NAME

modf, modff, modfl - extract signed integral and fractional values from floating-point number  

SYNOPSIS

#include <math.h>

double modf(double x, double *iptr);

float modff(float x, float *iptr);
long double modfl(long double x, long double *iptr);

Link with -lm.  

DESCRIPTION

The modf() function breaks the argument x into an integral part and a fractional part, each of which has the same sign as x. The integral part is stored in iptr.  

RETURN VALUE

The modf() function returns the fractional part of x.  

CONFORMING TO

SVr4, 4.3BSD, C89. The float and long double variants are C99 requirements.  

SEE ALSO

frexp(3), ldexp(3)


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
CONFORMING TO
SEE ALSO

linux.jgfs.net manual pages