h.declaw

来自「强大的数学工具包」· DECLAW 代码 · 共 32 行

                               * * * * * * *
                               *   declaw  *
                               * * * * * * *

        "decomposition law"
        SYNTAX: X = declaw(p)

        p is an expression whose value is a prime.
        
        declaw computes the decomposition law of p in the current
        number field, i.e. the number of extensions r of p and their
        ramification indices ei and residue class degrees fi.
        X is assigned the value of p.

        In AV the additional values are stored as follows:
        AV[0]=r, AV[1]=e1, AV[2]=f1, ..., AV[2*r-1]=er, AV[2*r]=fr
        (see "?avfunc").
        
        Warning: If p > 2^30, the primality of p is not tested.
        

        Example 1: (correct)

                declaw(97)


        Example 2: (incorrect)

                declaw(9)

_ERR_NR_188