HP-UX Reference (11i v1 05/09) - 3 Library Functions A-M (vol 6)

i
islessgreater(3M) islessgreater(3M)
NAME
islessgreater() - floating-point comparison macro (<>)
SYNOPSIS
#include <math.h>
int islessgreater(
floating-expr x, floating-expr y);
DESCRIPTION
The islessgreater()
macro determines whether its first argument is less than or greater than its
second argument. The value of
islessgreater(
x,y) is always equal to
(x)<(y)||(x)>
(
y); however, islessgreater(
x,y) does not raise the invalid exception when x and y are unordered
(nor does it evaluate x and y twice).
The macro can be used with either
double
or float arguments.
The ISO/ANSI C committee has approved the
islessgreater()
macro for inclusion in the C9X draft
standard.
To use the
islessgreater()
macro, compile either with the default -Ae option or with the -Aa and
-D_HPUX_SOURCE options. Make sure your program includes <
math.h>. Link in the math library by
specifying
-lm on the compiler or linker command line.
RETURN VALUE
The islessgreater()
macro returns the value of (x)<(y)||(x)>(y).
ERRORS
No errors are defined.
SEE ALSO
isgreater(3M), isgreaterequal(3M), isless(3M), islessequal(3M), isunordered(3M), math(5).
Section 3−−508 Hewlett-Packard Company − 1 − HP-UX 11i Version 1: September 2005