NetBSD/lib/libm/man/asinh.3

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.\" Copyright (c) 1985, 1991 Regents of the University of California.
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
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.\" 1. Redistributions of source code must retain the above copyright
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.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
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.\" must display the following acknowledgement:
.\" This product includes software developed by the University of
.\" California, Berkeley and its contributors.
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.\" may be used to endorse or promote products derived from this software
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" from: @(#)asinh.3 6.4 (Berkeley) 5/6/91
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.\" $NetBSD: asinh.3,v 1.10 1998/02/05 18:51:53 perry Exp $
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.\"
.Dd May 6, 1991
.Dt ASINH 3
.Os
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.Sh NAME
.Nm asinh
.Nd inverse hyperbolic sine function
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.Sh LIBRARY
.Lb libm
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.Sh SYNOPSIS
.Fd #include <math.h>
.Ft double
.Fn asinh "double x"
.Ft float
.Fn asinhf "float x"
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.Sh DESCRIPTION
The
.Fn asinh
and
.Fn asinhf
functions compute the inverse hyperbolic sine
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of the real
argument
.Sh RETURN VALUES
The
.Fn asinh
and
.Fn asinhf
functions return the inverse hyperbolic sine of
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.Ar x .
.\" SYSV_MODE
.\" .Sh RETURN VALUES
.\" Exceptional cases are handled by
.\" .Xr matherr 3 .
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.Sh SEE ALSO
.Xr acosh 3 ,
.Xr atanh 3 ,
.Xr exp 3 ,
.Xr math 3
.\" .Xr matherr 3
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.Sh HISTORY
The
.Fn asinh
function appeared in
.Bx 4.3 .