atanh(3M)																 atanh(3M)

NAME

       atanh(), atanhf(), atanhl(), atanhw(), atanhq() - arc hyperbolic tangent functions

SYNOPSIS

   HP Integrity Server Only
DESCRIPTION

       returns the arc hyperbolic tangent of x.

   Integrity Server Only
       is a version of it takes a argument and returns a result.

       is a version of it takes a argument and returns a result.

       is an version of it takes an argument and returns an result.

       is equivalent to on HP-UX systems.

USAGE

       To use (for Integrity servers) compile either with the default option or with the and options.

       To use (for Integrity servers) or compile also with the option.

       To use any of these functions, make sure your program includes and link in the math library by specifying on the compiler or linker command
       line.

       For more information, see the at the following site:

RETURN VALUE

       and raises the divide-by-zero floating-point exception.

       If |x| > 1.0, returns NaN and raises the invalid exception.

       If x is NaN, returns NaN.

       When it raises no other exception, whether raises the inexact exception is unspecified.

ERRORS

       If |x| > 1.0, sets to [EDOM].

   Integrity Server Only
       HP-UX functions on Integrity server do not set by default.  For setting, compile with the option.

SEE ALSO

       acosh(3M), asinh(3M), catanh(3M), tanh(3M), math(5).

STANDARDS CONFORMANCE

       : ISO/IEC C99 (including Annex F, ``IEC 60559 floating-point arithmetic'')

																	 atanh(3M)