Php/docs/function.gmp-root

• PHP Manual
• GMP 函数
• Take the integer part of nth root

gmp_root

(PHP 5 >= 5.6.0, PHP 7)

gmp_root — Take the integer part of nth root

说明

gmp_root ( GMP $a , int $nth ) : GMP

Takes the nth root of a and returns the integer component of the result.

参数

a

PHP 5.5 之前为 GMP 数值资源，PHP 5.6 之后为 GMP 对象或数字，或可以转为数字的字符串。

nth

The positive root to take of a.

返回值

The integer component of the resultant root, as a GMP number.