Name
significand, significandf, significandl - get mantissa of floating-point numberLibrary
Math library ( libm ", " -lm )Synopsis
#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
Description
These functions return the mantissa of x scaled to the range [1,2). They are equivalent toscalb(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 |
T} | Thread safety | MT-Safe |
Standards
None.significand() BSD.
History
significand() BSD.