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SIGNIFICAND
Section: Linux Programmer's Manual (3)
Updated: 2009-02-04
Index
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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():
-
_SVID_SOURCE || _BSD_SOURCE
DESCRIPTION
The
significand()
function returns the mantissa of
x
scaled to the range [1,2).
It is equivalent to
scalb(x, (double) -ilogb(x))
This function exists mainly for use in certain standardized tests
for IEEE 754 conformance.
CONFORMING TO
These functions are nonstandard; the
double
version is available on a number of other systems.
SEE ALSO
ilogb(3),
scalb(3)
COLOPHON
This page is part of release 3.27 of the Linux
man-pages
project.
A description of the project,
and information about reporting bugs,
can be found at
http://www.kernel.org/doc/man-pages/.
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- CONFORMING TO
-
- SEE ALSO
-
- COLOPHON
-
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