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NAME
fdim, fdimf, fdiml - positive difference
SYNOPSIS
#include <math.h >
double fdim(double x , double y );
float fdimf(float x , float y );
long double fdiml(long double x , long double y );
Link with -lm .
Feature Test Macro Requirements for glibc (see
feature_test_macros
fdimf (),
fdiml ():
_XOPEN_SOURCE >= 600 || _ISOC99_SOURCE; or
cc -std=c99
DESCRIPTION
These functions return the positive difference, max(x -y ,0),
between their arguments.
RETURN VALUE
On success, these functions return the positive difference.
If
x
or
y
is a NaN, a NaN is returned.
If the result overflows,
a range error occurs,
and the functions return
HUGE_VAL ,
HUGE_VALF ,
or
HUGE_VALL ,
respectively.
ERRORS
See
math_error
The following errors can occur:
Range error: result overflow
An overflow floating-point exception
(FE_OVERFLOW )
is raised.
These functions do not set
errno .
VERSIONS
These functions first appeared in glibc in version 2.1.
CONFORMING TO
C99, POSIX.1-2001.
SEE ALSO
fmax
COLOPHON
This page is part of release 3.14 of the Linux
man-pages
project.
A description of the project,
and information about reporting bugs,
can be found at
http://www.kernel.org/doc/man-pages/.
Index
NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
VERSIONS
CONFORMING TO
SEE ALSO
COLOPHON
