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ISNORMAL(P)		   POSIX Programmer's Manual		   ISNORMAL(P)

NAME
       isnormal - test for a normal value

SYNOPSIS
       #include <math.h>

       int isnormal(real-floating x);

DESCRIPTION
       The isnormal() macro shall determine whether its argument value is nor‐
       mal (neither zero, subnormal, infinite, nor NaN).  First,  an  argument
       represented  in	a  format wider than its semantic type is converted to
       its semantic type. Then determination is based on the type of the argu‐
       ment.

RETURN VALUE
       The  isnormal()	macro shall return a non-zero value if and only if its
       argument has a normal value.

ERRORS
       No errors are defined.

       The following sections are informative.

EXAMPLES
       None.

APPLICATION USAGE
       None.

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       fpclassify() , isfinite() , isinf() , isnan() , signbit()  ,  the  Base
       Definitions volume of IEEE Std 1003.1-2001, <math.h>

COPYRIGHT
       Portions	 of  this text are reprinted and reproduced in electronic form
       from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
       --  Portable  Operating	System	Interface (POSIX), The Open Group Base
       Specifications Issue 6, Copyright (C) 2001-2003	by  the	 Institute  of
       Electrical  and	Electronics  Engineers, Inc and The Open Group. In the
       event of any discrepancy between this version and the original IEEE and
       The  Open Group Standard, the original IEEE and The Open Group Standard
       is the referee document. The original Standard can be  obtained	online
       at http://www.opengroup.org/unix/online.html .

IEEE/The Open Group		     2003			   ISNORMAL(P)
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