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isnormal(3M)		Mathematical Library Functions		  isnormal(3M)

NAME
       isnormal - test for a normal value

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

       int isnormal(real-floating x);

DESCRIPTION
       The  isnormal()	macro  determines whether its argument value is normal
       (neither zero, subnormal, infinite, nor NaN). First, an argument repre‐
       sented  in  a  format  wider than its semantic type is converted to its
       semantic type. Then determination is based on the type of the argument.

RETURN VALUES
       The isnormal() macro returns a non-zero value if and only if its	 argu‐
       ment has a normal value.

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

SunOS 5.11			  12 Jul 2006			  isnormal(3M)
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