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