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

NAME         top

       significand,  significandf, significandl - get mantissa of floating-point num-
       ber

SYNOPSIS         top

       #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         top

       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         top

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

SEE ALSO         top

       ilogb(3), scalb(3)

COLOPHON         top

       This page is part of release 3.32 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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