[thirdparty/man-pages.git] / man3 / significand.3

.\" 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)
Commit	Line	Data
fea681da MK	1	.\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
	2	.\" Distributed under GPL
	3	.\" based on glibc infopages
	4	.TH SIGNIFICAND 3 2002-08-10 "gnu" "Linux Programmer's Manual"
	5	.SH NAME
	6	significand, significandf, significandl \-
	7	get mantissa of floating point number
	8	.SH SYNOPSIS
	9	.B #include <math.h>
	10	.sp
	11	.BI "double significand(double " x );
	12	.br
	13	.BI "float significandf(float " x );
	14	.br
	15	.BI "long double significandl(long double " x );
	16	.sp
	17	Link with \-lm.
	18	.SH DESCRIPTION
	19	The
63aa9df0	20	.BR significand ()
fea681da MK	21	function returns the mantissa of
	22	.I x
	23	scaled to the range [1,2).
	24	It is equivalent to
	25	.sp
	26	.in +8
c65433e6	27	scalb(x, (double) \-ilogb(x))
fea681da MK	28	.in -8
	29	.PP
	30	This function exists mainly for use in certain standardized tests
	31	for IEEE 754 conformance.
	32	.SH HISTORY
	33	This function came from BSD.
	34	.SH "SEE ALSO"
	35	.BR ilogb (3),
	36	.BR scalb (3)