PostgreSQL tanh() Function

The PostgreSQL tanh() function returns the hyperbolic tangent of the specified number.

tanh() Syntax

This is the syntax of the PostgreSQL tanh() function:

tanh(number)

Parameters

number

Required. The number used to calculate the hyperbolic tangent.

Return value

The PostgreSQL tanh() function returns the hyperbolic tangent of the specified number.

If the parameter number is NULL, the tanh() function will return NULL.

tanh() Examples

Here are a few examples of the tanh() function:

SELECT
    tanh(-2.5) AS "tanh(-2.5)",
    tanh(-1) AS "tanh(-1)",
    tanh(0) AS "tanh(0)",
    tanh(1) AS "tanh(1)",
    tanh(2.5) AS "tanh(2.5)";

-[ RECORD 1 ]-------------------
tanh(-2.5) | -0.9866142981514303
tanh(-1)   | -0.7615941559557649
tanh(0)    | 0
tanh(1)    | 0.7615941559557649
tanh(2.5)  | 0.9866142981514303