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
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.
These functions are nonstandard; the double version is available on a
number of other systems.
This page is part of release 3.35 of the Linux man-pages project. A
description of the project, and information about reporting bugs, can
be found at http://man7.org/linux/man-pages/.
GNU 2009-02-04 SIGNIFICAND(3)
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