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Linux 2.6 - man page for significand (linux section 3)

SIGNIFICAND(3)			    Linux Programmer's Manual			   SIGNIFICAND(3)

NAME
       significand, significandf, significandl - get mantissa of floating-point number

SYNOPSIS
       #include <math.h>

       double significand(double x);
       float significandf(float x);
       long double significandl(long double x);

       Link with -lm.

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       significand(), significandf(), significandl():
	   _SVID_SOURCE || _BSD_SOURCE

DESCRIPTION
       The  significand()  function  returns  the mantissa of x scaled to the range [1,2).  It is
       equivalent to

	   scalb(x, (double) -ilogb(x))

       This function exists mainly for use in certain standardized tests  for  IEEE  754  confor-
       mance.

CONFORMING TO
       These functions are nonstandard; the double version is available on a number of other sys-
       tems.

SEE ALSO
       ilogb(3), scalb(3)

COLOPHON
       This page is part of release 3.55 of the Linux man-pages project.  A  description  of  the
       project,     and    information	  about    reporting	bugs,	 can	be    found    at
       http://www.kernel.org/doc/man-pages/.

GNU					    2009-02-04				   SIGNIFICAND(3)


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