FreeBSD manual
download PDF document: modf.3.pdf
MODF(3) FreeBSD Library Functions Manual MODF(3)
NAME
modf, modff, modfl - extract signed integral and fractional values from
floating-point number
LIBRARY
Math Library (libm, -lm)
SYNOPSIS
#include <math.h>
double
modf(double value, double *iptr);
float
modff(float value, float *iptr);
long double
modfl(long double value, long double *iptr);
DESCRIPTION
The modf(), modff(), and modfl() functions break the argument value into
integral and fractional parts, each of which has the same sign as the
argument. It stores the integral part as a floating point number in the
object pointed to by iptr.
RETURN VALUES
These functions return the signed fractional part of value.
SEE ALSO
frexp(3), ldexp(3), math(3)
STANDARDS
The modf(), modff(), and modfl() functions conform to ISO/IEC 9899:1999
("ISO C99").
FreeBSD 14.0-RELEASE-p6 March 29, 2008 FreeBSD 14.0-RELEASE-p6