Math Functions
PHP Manual

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
  • asin
  • acosh
  • atanh