isfinite man page on DragonFly

isfinite man page on DragonFly

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ISFINITE(3)		 BSD Library Functions Manual		   ISFINITE(3)

NAME
     isfinite — test for finite value

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <math.h>

     int
     isfinite(real-floating x);

DESCRIPTION
     The isfinite() determines whether its argument x has a finite value.  An
     argument represented in a format wider than its semantic type is con‐
     verted to its semantic type first.	 The determination is then based on
     the type of the argument.

RETURN VALUES
     The isfinite() 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), isnormal(3), math(3), signbit(3)

STANDARDS
     The isfinite() macro conforms to ISO/IEC 9899:1999 (“ISO C99”).

BSD			       October 29, 2003				   BSD

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