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TANH

Syntax

Description of the illustration tanh.gif

Purpose

TANH returns the hyperbolic tangent of n.

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