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 conformance.

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

SEE ALSO
       ilogb(3), scalb(3)

COLOPHON
       This  page  is  part of release 3.25 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)