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+.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved
+.TH "FABS" P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual"
+.\" fabs
+.SH NAME
+fabs, fabsf, fabsl \- absolute value function
+.SH SYNOPSIS
+.LP
+\fB#include <math.h>
+.br
+.sp
+double fabs(double\fP \fIx\fP\fB);
+.br
+float fabsf(float\fP \fIx\fP\fB);
+.br
+long double fabsl(long double\fP \fIx\fP\fB);
+.br
+\fP
+.SH DESCRIPTION
+.LP
+These functions shall compute the absolute value of their argument
+\fIx\fP,| \fIx\fP|.
+.SH RETURN VALUE
+.LP
+Upon successful completion, these functions shall return the absolute
+value of \fIx\fP.
+.LP
+If
+\fIx\fP is NaN, a NaN shall be returned.
+.LP
+If \fIx\fP is \(+-0, +0 shall be returned.
+.LP
+If \fIx\fP is \(+-Inf, +Inf shall be returned.
+.SH ERRORS
+.LP
+No errors are defined.
+.LP
+\fIThe following sections are informative.\fP
+.SH EXAMPLES
+.LP
+None.
+.SH APPLICATION USAGE
+.LP
+None.
+.SH RATIONALE
+.LP
+None.
+.SH FUTURE DIRECTIONS
+.LP
+None.
+.SH SEE ALSO
+.LP
+\fIisnan\fP() , the Base Definitions volume of IEEE\ Std\ 1003.1-2001,
+\fI<math.h>\fP
+.SH COPYRIGHT
+Portions of this text are reprinted and reproduced in electronic form
+from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
+-- Portable Operating System Interface (POSIX), The Open Group Base
+Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
+Electrical and Electronics Engineers, Inc and The Open Group. In the
+event of any discrepancy between this version and the original IEEE and
+The Open Group Standard, the original IEEE and The Open Group Standard
+is the referee document. The original Standard can be obtained online at
+http://www.opengroup.org/unix/online.html .