aureooms/js-rational-field

// Import ZZ from '@aureooms/js-integer-ring' ;
import {_chr} from '@aureooms/js-integer-big-endian';
import {ZZ, DEFAULT_DISPLAY_BASE} from '@aureooms/js-integer';
import RationalField from './RationalField.js';

const domain = {
    name: 'ZZ',
    add: (a, b) => a.add(b),
    sub: (a, b) => a.sub(b),
    mul: (a, b) => a.mul(b),
    muln: (a, b) => a.muln(b),
    div: (a, b) => a.div(b),
    reg: (x, base) => ZZ.from(x, base),
    from: (x, base) => ZZ.from(x, base),
    str: (x, base) => x.toString(base),
    jz: (x) => x.iszero(),
    eq1: (x) => x.isone(),
    lt0: (x) => x.sign() < 0,
    gt1: (x) => x.gtn(1),
    cmp: (a, b) => a.cmp(b),
    eq: (a, b) => a.eq(b),
    sgn: (x) => x.sign(),
    abs: (x) => x.abs(),
    neg: (x) => x.opposite(),
    divmod: (a, b) => a.divmod(b),
    divmodn: (a, b) => a.divmodn(b),
    egcd: (a, b) => {
        const {u, v} = a.egcd(b);
        return {
            u: u.iabs(),
            v: v.iabs(),
        };
    },
    pown: (x, n) => x.pown(n),
    _chr,
    has: (...args) => ZZ.has(...args),
};

export default new RationalField(
    'Rational Field',
    domain,
    DEFAULT_DISPLAY_BASE,
);