TANH

Syntax

Description of the illustration tanh.gif

Purpose

TANH returns the hyperbolic tangent of n.

This function takes as an argument any numeric data type or any nonnumeric data type that can be implicitly converted to a numeric data type. If the argument is BINARY_FLOAT, then the function returns BINARY_DOUBLE. Otherwise the function returns the same numeric data type as the argument.

See Also:

Table 2-10, "Implicit Type Conversion Matrix" for more information on implicit conversion

Examples

The following example returns the hyperbolic tangent of .5:

SELECT TANH(.5) "Hyperbolic tangent of .5" 
   FROM DUAL;

Hyperbolic tangent of .5
------------------------
              .462117157