cosh
(PHP 4 >= 4.0.7, PHP 5)
cosh — Hyperbolic cosine
Beskrivelse
float cosh
( float $arg
)
Returns the hyperbolic cosine of arg , defined as (exp(arg) + exp(-arg))/2.
Parameterliste
- arg
-
The argument to process
Returneringsværdier
The hyperbolic cosine of arg