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Oracle® Database SQL Reference 10g Release 2 (10.2) Part Number B14200-02 |
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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