SIGNIFICAND(3)            (2017-09-15)             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():
              /* Since glibc 2.19: */ _DEFAULT_SOURCE
                  || /* Glibc versions <= 2.19: */ _BSD_SOURCE ||
              _SVID_SOURCE

     DESCRIPTION
          These functions return the mantissa of x scaled to the range
          [1,2).  They are equivalent to

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

          This function exists mainly for use in certain  standardized
          tests for IEEE 754 conformance.

     ATTRIBUTES
          For an explanation of the terms used in  this  section,  see
          attributes(7).     allbox;    lb    lb    lb    l    l    l.
          Interface Attribute Value T{ significand(),
          significandf(),
          significandl() T}   Thread safety  MT-Safe

     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 5.10  of  the  Linux  man-pages
          project.   A  description  of the project, information about
          reporting bugs, and the latest version of this page, can  be
          found at https://www.kernel.org/doc/man-pages/.

     Page 1                         GNU              (printed 5/20/22)