asinh

(PHP 4 >= 4.1.0, PHP 5)

asinh — Inverse hyperbolic sine

Description

float asinh ( float $arg )

Returns the inverse hyperbolic sine of arg, i.e. the value whose hyperbolic sine is arg.

Parameters

arg

The argument to process

Return Values

The inverse hyperbolic sine of arg

Changelog

Version	Description
5.3.0	This function is now available on all platforms

See Also

• sinh() - Hyperbolic sine
• asin() - Arc sine
• acosh() - Inverse hyperbolic cosine
• atanh() - Inverse hyperbolic tangent