h.root

来自「强大的数学工具包」· ROOT 代码 · 共 39 行

                               * * * * * * *
                               *    root   *
                               * * * * * * *

        "root"
        SYNTAX: X = root(A, n)

        A is an expression whose value is an element of Z, Q, 
        R, C or Z/mZ. 
        n is an expression whose value is a single precision number.

        If A is an element of Z/mZ or C, n must be of the form 2^r. 
        If the modulus m is greater than 2^30, m must be a 
        prime, but this primality is not tested.

        X is assigned the nth root of A.


        Example 1: (correct)

                root(11/7, 8)


        Example 2: (correct)

                root(0.23423, 6)


        Example 3: (correct)

                root(MOD(40), 16)


        Example 4: (incorrect)

                root(12, 1/7)

_ERR_NR_034_root_