relibc_openlibm/man/fabs.3

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.\"     from: @(#)fabs.3	5.1 (Berkeley) 5/2/91
.\" $FreeBSD: src/lib/msun/man/fabs.3,v 1.12 2007/01/09 01:02:05 imp Exp $
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.Dd October 25, 2003
.Dt FABS 3
.Os
.Sh NAME
.Nm fabs ,
.Nm fabsf ,
.Nm fabsl
.Nd floating-point absolute value functions
.Sh LIBRARY
.Lb libm
.Sh SYNOPSIS
.In math.h
.Ft double
.Fn fabs "double x"
.Ft float
.Fn fabsf "float x"
.Ft long double
.Fn fabsl "long double x"
.Sh DESCRIPTION
The
.Fn fabs ,
.Fn fabsf
and
.Fn fabsl
functions compute the absolute value of a floating-point number
.Fa x .
.Sh RETURN VALUES
The
.Fn fabs ,
.Fn fabsf
and
.Fn fabsl
functions return the absolute value of
.Fa x .
.Sh SEE ALSO
.Xr abs 3 ,
.Xr ceil 3 ,
.Xr floor 3 ,
.Xr ieee 3 ,
.Xr math 3 ,
.Xr rint 3
.Sh STANDARDS
The
.Fn fabs
function conforms to
.St -isoC .
The
.Fn fabsf
and
.Fn fabsl
functions conform to
.St -isoC-99 .