types/basic.js (117473e) - rtensor · DKL9 GitList

Refactor towards a working QuickJS version

dkl9 commited 117473e at 2023-196 12:46:40

basic.js

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"use strict";

export class BasicNumber {
    constructor() {}

sub(z) {
        return this.add(z.neg());
    }

div(z) {
        return this.mul(z.recip());
    }

pow(z) {
        return this.ln().mul(z).exp();
    }

log(z) {
        return this.ln().div(z.ln());
    }

isNeg() {
        return this.lt(this.constructor.zero());
    }

rangeTo(b) {
        const al = Math.ceil(b.sub(this).mag() + 1);
        const ud = b.sub(this).dir();
        return (new Array(al)).fill(0).map((_z, i) => this.add(ud.mul(this.constructor.ify(i))));
    }

dir() {
        return this.mag().eq(0) ? this.constructor.one() : this.div(this.constructor.ify(this.mag()));
    }
}

// because the prototype fields are nonenumerable argh
BasicNumber.keys = ["sub", "div", "pow", "log", "isNeg", "rangeTo", "dir"];

["zero", "one", "add", "neg", "mul", "recip", "exp", "ln", "sqrt", "sin", "cos", "asin", "acos", "atan", "eq", "lt", "mag", "floor"].forEach(o => BasicNumber.prototype[o] = function() { throw `${o} not defined for current number type`; });