significand3
Get mantissa of floating-point number
Usage
#include <math.h>
double significand(double x); float significandf(float x); long double significandl(long double x);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
significand(), significandf(), significandl():
/* Since glibc 2.19: */ _DEFAULT_SOURCE
|| /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE
Library
Math library (libm, -lm)
Overview
These functions return the mantissa of x scaled to the range [1, FLT_RADIX). 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).
| Interface | Attribute | Value |
| significand(), significandf(), significandl() | Thread safety | MT-Safe |
Releases
12 releases since Debian 3.1 (Sarge); the text changed 11 times.