islessgreater(3M) Mathematical Library Functions islessgreater(3M)NAMEislessgreater - test if x is less than or greater than y
SYNOPSIS
c99 [ flag... ] file... -lm [ library... ]
#include <math.h>
int islessgreater(real-floating x, real-floating y);
DESCRIPTION
The islessgreater() macro determines whether its first argument is less
than or greater than its second argument. The islessgreater(x, y) macro
is similar to (x) < (y) || (x) > (y); however, islessgreater(x, y) does
not raise the invalid floating-point exception when x and y are
unordered (nor does it evaluate x and y twice).
RETURN VALUES
Upon successful completion, the islessgreater() macro returns the value
of (x) < (y) || (x) > (y).
If x or y is NaN, 0 is returned.
ERRORS
No errors are defined.
USAGE
The relational and equality operators support the usual mathematical
relationships between numeric values. For any ordered pair of numeric
values, exactly one of the relationships (less, greater, and equal) is
true. Relational operators can raise the invalid floating-point excep‐
tion when argument values are NaNs. For a NaN and a numeric value, or
for two NaNs, just the unordered relationship is true. This macro is a
quiet (non-floating-point exception raising) version of a relational
operator. It facilitates writing efficient code that accounts for quiet
NaNs without suffering the invalid floating-point exception. In the
SYNOPSIS section, real-floating indicates that the argument is an
expression of real-floating type.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌─────────────────────────────┬─────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│Interface Stability │Standard │
├─────────────────────────────┼─────────────────────────────┤
│MT-Level │MT-Safe │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOisgreater(3M), isgreaterequal(3M), isless(3M), islessequal(3M),
isunordered(3M), math.h(3HEAD), attributes(5), standards(5)SunOS 5.10 12 Jul 2006 islessgreater(3M)