isinf(3m) [opensolaris man page]

isinf(3M)						  Mathematical Library Functions						 isinf(3M)

NAME

       isinf - test for infinity

SYNOPSIS

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

       int isinf(real-floating x);

DESCRIPTION

       The  isinf()  macro determines whether its argument value is an infinity (positive or negative). 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 argument.

RETURN VALUES

       The isinf() macro returns a non-zero value if and only if its argument has an infinite 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), isnan(3M), isnormal(3M), math.h(3HEAD), signbit(3M), attributes(5), standards(5)

SunOS 5.11							    17 Nov 2008 							 isinf(3M)

Check Out this Related Man Page

ISINF(3)						   BSD Library Functions Manual 						  ISINF(3)

NAME

     isinf -- test for infinity

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <math.h>

     int
     isinf(real-floating x);

DESCRIPTION

     The isinf() macro determines whether its argument x is an infinity (positive or negative).  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.

   IEEE 754
     It is determined whether the value of x is an infinity.

   VAX
     Infinities are not supported.

RETURN VALUES

     The isinf() macro returns a non-zero value if the value of x is an infinity.  Otherwise 0 is returned.

SEE ALSO

     fpclassify(3), isfinite(3), isinff(3), isnan(3), isnanf(3), isnormal(3), math(3), signbit(3)

     IEEE Standard for Binary Floating-Point Arithmetic, Std 754-1985, ANSI.

STANDARDS

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

BSD
								   March 5, 2004							       BSD

Linux and UNIX Man Pages

isinf(3m) [opensolaris man page]

Check Out this Related Man Page