finite.3m (2010 09)

ﬁnite(3M) ﬁnite(3M)

(HP Integrity Server Only)

NAME

ﬁnite(), ﬁnitef(), ﬁnitel(), ﬁnitew(), ﬁniteq() - ﬁniteness functions

SYNOPSIS

#include <math.h>

int finite(double

x);

int finitef(float

x);

int finitel(long double x);

int finitew(extended

x);

int finiteq(quad x);

DESCRIPTION

The finite() function determines whether its argument has a ﬁnite value (zero, subnormal, or normal,

and not inﬁnite or NaN).

These functions are superseded by the standard

isfinite

macro. They are provided in HP-UX to facil-

itate importing code from other platform.

finitef() is a float version of finite(); it takes a float argument.

finitel() is a long double version of finite(); it takes a long double argument.

finitew() is an extended version of finite(); it takes an extended argument.

finiteq() is equivalent to finitel() on HP-UX systems.

USAGE

To use these functions, compile either with the default

-Ae option or with the

-Aa and

-D_HPUX_SOURCE options.

To use

finitew() or finiteq(), compile also with the -fpwidetypes option.

Make sure your program includes

<math.h>. Link in the math library by specifying -lm on the com-

piler or linker command line.

For more information, see the HP-UX ﬂoating-point guide for HP Integrity servers at the following site:

http://www.hp.com/go/fp

RETURN VALUE

finite() returns a nonzero value if and only if its argument has a ﬁnite value.

ERRORS

No errors are deﬁned.

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finite(3M) finite(3M) (HP Integrity Server Only) NAME finite(), finitef(), finitel(), finitew(), finiteq() - finiteness functions SYNOPSIS #include int finite(double x ); int finitef(float x ); int finitel(long double x ); int finitew(extended x ); int finiteq(quad x ); DESCRIPTION The finite() function determines whether its argument has a finite value (zero, subnormal, or normal, and not infinite or NaN). These functions are superseded by the standard isfinite macro.
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(Notes) A (Notes) fA 2 Hewlett-Packard Company −1− HP-UX 11i Version 3: September 2010