tanh
(PHP 4 >= 4.0.7, PHP 5)
tanh — Hyperbolic tangent
說明
float tanh
( float $arg
)
Returns the hyperbolic tangent of arg , defined as sinh(arg)/cosh(arg).
參數
- arg
-
The argument to process
Return值
The hyperbolic tangent of arg
(PHP 4 >= 4.0.7, PHP 5)
tanh — Hyperbolic tangent
Returns the hyperbolic tangent of arg , defined as sinh(arg)/cosh(arg).
The argument to process
The hyperbolic tangent of arg