significand, significandf, significandl - get mantissa of floating-point number
#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
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.
For an explanation of the terms used in this section, see attributes(7).
These functions are nonstandard; the
double version is available on a number of other systems.
This page is part of release 4.15 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/.