trader_linearreg
trader_log10
Trader 関数
PHP Manual

# trader_ln

(PECL trader >= 0.2.0)

trader_ln — Vector Log Natural

### 説明

array trader_ln ( array `$real` )

Calculates the natural logarithm for each value in `real` and returns the resulting array.

### パラメータ

`real`

  実数値の配列

### 返り値

Returns an array with calculated data or false on failure.

trader_linearreg
trader_log10
Trader 関数
PHP Manual