TANH

Calculates the hyperbolic tangent of a provided value.

Syntax

TANH(<value>)

Parameter	Description	Supported input types
`<value>`	The value that determines the returned hyperbolic tangent.	`DOUBLE PRECISION`

DOUBLE PRECISION TANH is defined for every real argument and returns a value in the open interval between -1 and 1.

The hyperbolic tangent of 0 is 0:

SELECT TANH(0) as result;

result double
0

Rows: 1Execution time: 5.21ms

At LN(2) the result is exact — SINH(LN(2)) / COSH(LN(2)), or 0.75 / 1.25:

SELECT TANH(LN(2)) as result;

result double
0.6

Rows: 1Execution time: 5.21ms