fpclassify(3m) [opensolaris man page]

fpclassify(3M)						  Mathematical Library Functions					    fpclassify(3M)

NAME

       fpclassify - classify real floating type

SYNOPSIS

       c99 [ flag... ] file... -lm [ library... ]
       #include <math.h>

       int fpclassify(real-floating x);

DESCRIPTION

       The fpclassify() macro classifies its argument value as NaN, infinite, normal, subnormal, or zero. First, an argument represented in a for-
       mat wider than its semantic type is converted to its semantic type. Then classification is based on the type of the argument.

RETURN VALUES

       The fpclassify() macro returns the value of the number classification macro appropriate to the value of its argument.

ERRORS

       No errors are defined.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       isfinite(3M), isinf(3M), isnan(3M), isnormal(3M), math.h(3HEAD), signbit(3M), attributes(5), standards(5)

SunOS 5.11							    12 Jul 2006 						    fpclassify(3M)

fpclassify(3M)															    fpclassify(3M)

NAME

       fpclassify() - floating-point value classification macro

SYNOPSIS

       floating-type

DESCRIPTION

       The  macro  classifies  its argument value as NaN, infinite, normalized, denormalized, or zero.	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, used in conjunction with 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 the value of the number classification macro appropriate to the type and value of its argument.

       The value returned is one of the following macros, which are defined in

       Every possible argument value falls into one of these categories, so this macro never results in an error.

       The macro raises no exceptions.

ERRORS

       No errors are defined.

EXAMPLES

       Take certain actions if is either a denormalized value or zero:

SEE ALSO

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

STANDARDS CONFORMANCE

																    fpclassify(3M)