.\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
.\" Distributed under GPL
.\" based on glibc infopages
.TH SIGNIFICAND 3 2002-08-10 "GNU" "Linux Programmer's Manual"
.SH NAME
significand, significandf, significandl \-
get mantissa of floating point number
.SH SYNOPSIS
.B #include <math.h>
.sp
.BI "double significand(double " x );
.br
.BI "float significandf(float " x );
.br
.BI "long double significandl(long double " x );
.sp
Link with \-lm.
.SH DESCRIPTION
The
.BR significand ()
function returns the mantissa of
.I x
scaled to the range [1,2).
It is equivalent to
.sp
.in +8
scalb(x, (double) \-ilogb(x))
.in -8
.PP
This function exists mainly for use in certain standardized tests
for IEEE 754 conformance.
.SH HISTORY
This function came from BSD.
.SH "SEE ALSO"
.BR ilogb (3),
.BR scalb (3)