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ISNORMAL(3)	      DragonFly Library Functions Manual	   ISNORMAL(3)

NAME
     isnormal -- test for normal value

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <math.h>

     int
     isnormal(real-floating x);

DESCRIPTION
     The isnormal() macro determines whether its argument x has a normal
     value.  An argument represented in a format wider than its semantic type
     is converted to its semantic type first.  The determination is then based
     on the type of the argument.

RETURN VALUES
     The isnormal() macro returns a non-zero value if the value of x is
     finite.  Otherwise 0 is returned.

ERRORS
     No errors are defined.

SEE ALSO
     fpclassify(3), isfinite(3), math(3), signbit(3)

STANDARDS
     The isnormal() macro conforms to ISO/IEC 9899:1999 (``ISO C99'').

DragonFly 3.5		       October 29, 2003 		 DragonFly 3.5