significand man page
significand, significandf, significandl — get mantissa of floating-point number
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).
| significand(), |
These functions are nonstandard; the double version is available on a number of other systems.
This page is part of release 4.14 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/.
The man pages significandf(3) and significandl(3) are aliases of significand(3).