Function encodePoint

test/data/map/encode.js:86–101

(val, prev)

}

function encodePoint(val, prev){
    // Quantization
    val = quantize(val);
    // var tmp = val;
    // Delta
    var delta = val - prev;

    if (((delta << 1) ^ (delta >> 15)) + 64 === 8232) {
        //WTF, 8232 will get syntax error in js code
        delta--;
    }
    // ZigZag
    delta = (delta << 1) ^ (delta >> 15);
    // add offset and get unicode
    return String.fromCharCode(delta + 64);
}

// Export for testing.
if (typeof module !== 'undefined') {