Manpage of ATANH
ATANH
Section: NEWLIB (3)
Updated: 2005 Feb 23
Index
Return to Main Contents
NAME
1.8 `atanh', `atanhf'--inverse hyperbolic tangent
SYNOPSIS
#include <math.h>
double atanh(double X);
float atanhf(float X);
DESCRIPTION
`atanh' calculates the inverse hyperbolic tangent of X.
`atanhf' is identical, other than taking and returning `float'
values.
RETURNS
`atanh' and `atanhf' return the calculated value.
If
X|
is greater than 1, the global `errno' is set to `EDOM' and the
result is a NaN. A `DOMAIN error' is reported.
If
X|
is 1, the global `errno' is set to `EDOM'; and the result is
infinity with the same sign as `x'. A `SING error' is reported.
You can modify the error handling for these routines using `matherr'.
PORTABILITY
Neither `atanh' nor `atanhf' are ANSI C.
SEE ALSO
atanh
is part of the
libm
library.
The full documentation for
libm
is maintained as a Texinfo manual. If
info
and
libm
are properly installed at your site, the command
-
info libm
will give you access to the complete manual.
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURNS
-
- PORTABILITY
-
- SEE ALSO
-
This document was created by
man2html,
using the manual pages.
Time: 21:25:12 GMT, May 16, 2005
www.fiveanddime.net