GCC: General Macro for BSD Post: 302914563

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isinf

isinf(3M)																 isinf(3M)

NAME

       isinf() - floating-point test for infinity

SYNOPSIS

DESCRIPTION

       The  macro  determines whether its argument is an infinity.  The argument must be of floating type, and classification is based on the type
       of the argument.  For HP Integrity servers, the argument can be any floating type.  For PA-RISC, the argument must be either or

       The macro replaces the and functions, which are obsolete and are no longer supported.

USAGE

       To use the macro, compile either with the default option or with the and options.  Make sure your program includes Link in the math library
       by specifying on the compiler or linker command line.

RETURN VALUE

       The macro returns a nonzero value if x is Otherwise, it returns zero.  The macro raises no floating-point exceptions.

ERRORS

       No errors are defined.

EXAMPLES

       Take certain actions if is infinity:

SEE ALSO

       fpclassify(3M), isfinite(3M), isnan(3M), isnormal(3M), signbit(3M), math(5).

STANDARDS CONFORMANCE

																	 isinf(3M)