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 |