islessequal Macro

Purpose

Tests if x is less than or equal to y.

Syntax

#include <math.h>

int islessequal (x, y)
real-floating x;
real-floating y;

Description

The islessequal macro determines whether its first argument is less than or equal to its second argument. The value of islessequal(x, y) is equal to (x) <= (y); however, unlike (x) <= (y), islessequal(x, y) does not raise the invalid floating-point exception when x and y are unordered.

Parameters

Item	Description
x	Specifies the first value to be compared.
y	Specifies the second value to be compared.

Return Values

Upon successful completion, the islessequal macro returns the value of (x) <= (y).

If x or y is NaN, 0 is returned.