freebsd-dev/lib/msun/man/asinh.3
Jordan K. Hubbard 3a8617a83f J.T. Conklin's latest version of the Sun math library.
-- Begin comments from J.T. Conklin:
The most significant improvement is the addition of "float" versions
of the math functions that take float arguments, return floats, and do
all operations in floating point.  This doesn't help (performance)
much on the i386, but they are still nice to have.

The float versions were orginally done by Cygnus' Ian Taylor when
fdlibm was integrated into the libm we support for embedded systems.
I gave Ian a copy of my libm as a starting point since I had already
fixed a lot of bugs & problems in Sun's original code.  After he was
done, I cleaned it up a bit and integrated the changes back into my
libm.
-- End comments

Reviewed by:	jkh
Submitted by:	jtc
1994-08-19 09:40:01 +00:00

71 lines
2.5 KiB
Groff

.\" Copyright (c) 1985, 1991 Regents of the University of California.
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.\" from: @(#)asinh.3 6.4 (Berkeley) 5/6/91
.\" $Id: asinh.3,v 1.4 1993/10/29 22:57:23 jtc Exp $
.\"
.Dd May 6, 1991
.Dt ASINH 3
.Os BSD 4.3
.Sh NAME
.Nm asinh
.Nd inverse hyperbolic sine function
.Sh SYNOPSIS
.Fd #include <math.h>
.Ft double
.Fn asinh "double x"
.Sh DESCRIPTION
The
.Fn asinh
function computes the inverse hyperbolic sine
of the real
argument
.Ar x .
For a discussion of error due to roundoff, see
.Xr math 3 .
.Sh RETURN VALUES
The
.Fn asinh
function
returns the inverse hyperbolic sine of
.Ar x .
.Sh SEE ALSO
.Xr acosh 3 ,
.Xr atanh 3 ,
.Xr exp 3 ,
.Xr infnan 3 ,
.Xr math 3
.Sh HISTORY
The
.Fn asinh
function appeared in
.Bx 4.3 .