fpclassify man page on SmartOS

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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	format
       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), sign‐
       bit(3M), attributes(5), standards(5)

SunOS 5.11			  12 Jul 2006			fpclassify(3M)
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