aureooms-js-integer
Version:
integer code bricks for JavaScript
48 lines (39 loc) • 3.69 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.parse_t = parse_t;
/**
* Function template for number parsing.
* Endianess provided by the iterator function
* iterator function must be reverse ordered
*
* @param {int} f from radix
* @param {int} t to radix
* @param {function} iter iterator function
*/
function parse_t(t, f, iter) {
if (t >= f) {
if (f > 36) throw 'f > 36 not implemented';
var z = 0,
log = t;
while (log >= f) {
if (log % f) break;
log /= f;
++z;
}
if (log !== 1) throw 'log(f) does not divide log(t) not implemented';
// immediate log(t) divides log(f)
return function (s, si, sj, a, ai, aj) {
var len = sj - si,
k = sj - z,
n = Math.ceil(len / z);
var block = function block(i) {
a[i] = parseInt(s.slice(Math.max(0, k), k + z), f);
k -= z;
};
iter(aj - n, aj, block);
};
} else throw 'f > t not implemented';
}
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