Function modL

vmm/src/x25519.js:1294–1318

(r, x)

        0x10,
    ]);
    function modL(r, x) {
        var carry, i, j, k;
        for (i = 63; i >= 32; --i) {
            carry = 0;
            for (j = i - 32, k = i - 12; j < k; ++j) {
                x[j] += carry - 16 * x[i] * L[j - (i - 32)];
                carry = (x[j] + 128) >> 8;
                x[j] -= carry * 256;
            }
            x[j] += carry;
            x[i] = 0;
        }
        carry = 0;
        for (j = 0; j < 32; j++) {
            x[j] += carry - (x[31] >> 4) * L[j];
            carry = x[j] >> 8;
            x[j] &= 255;
        }
        for (j = 0; j < 32; j++)
            x[j] -= carry * L[j];
        for (i = 0; i < 32; i++) {
            x[i + 1] += x[i] >> 8;
            r[i] = x[i] & 255;
        }
    }
    function reduce(r) {
        var x = new Float64Array(64), i;
        for (i = 0; i < 64; i++)