— Function: complex long double ctanhl (complex long double z)

These functions return the complex hyperbolic tangent of z,
defined mathematically as csinh (z) / ccosh (z).

— Function: double asinh (double x)

— Function: float asinhf (float x)

— Function: long double asinhl (long double x)

These functions return the inverse hyperbolic sine of x—the
value whose hyperbolic sine is x.

— Function: double acosh (double x)

— Function: float acoshf (float x)

— Function: long double acoshl (long double x)

These functions return the inverse hyperbolic cosine of x—the
value whose hyperbolic cosine is x. If x is less than
1, acosh signals a domain error.

— Function: double atanh (double x)

— Function: float atanhf (float x)

— Function: long double atanhl (long double x)

These functions return the inverse hyperbolic tangent of x—the
value whose hyperbolic tangent is x. If the absolute value of
x is greater than 1, atanh signals a domain error;
if it is equal to 1, atanh returns infinity.

— Function: complex long double cacoshl (complex long double z)

These functions return the inverse complex hyperbolic cosine of
z—the value whose complex hyperbolic cosine is z. Unlike
the real-valued functions, there are no restrictions on the value of z.

— Function: complex long double catanhl (complex long double z)

These functions return the inverse complex hyperbolic tangent of
z—the value whose complex hyperbolic tangent is z. Unlike
the real-valued functions, there are no restrictions on the value of
z.

Published under the terms of the GNU General Public License