islessequal(3M) 					  Mathematical Library Functions					   islessequal(3M)

NAME

       islessequal - test if x is less than or equal to y

SYNOPSIS

       #include <math.h>

       int islessequal(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.

RETURN VALUES

       Upon successful completion, the islessequal() macro returns the value of (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
       exception  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 ALSO

       isgreater(3M), isgreaterequal(3M), isless(3M), islessgreater(3M), isunordered(3M), math.h(3HEAD), attributes(5), standards(5)

SunOS 5.10							    1 Nov 2003							   islessequal(3M)