Initial code test

node_modules/pg-int8/index.js

@@ -0,0 +1,100 @@
+'use strict';
+
+// selected so (BASE - 1) * 0x100000000 + 0xffffffff is a safe integer
+var BASE = 1000000;
+
+function readInt8(buffer) {
+	var high = buffer.readInt32BE(0);
+	var low = buffer.readUInt32BE(4);
+	var sign = '';
+
+	if (high < 0) {
+		high = ~high + (low === 0);
+		low = (~low + 1) >>> 0;
+		sign = '-';
+	}
+
+	var result = '';
+	var carry;
+	var t;
+	var digits;
+	var pad;
+	var l;
+	var i;
+
+	{
+		carry = high % BASE;
+		high = high / BASE >>> 0;
+
+		t = 0x100000000 * carry + low;
+		low = t / BASE >>> 0;
+		digits = '' + (t - BASE * low);
+
+		if (low === 0 && high === 0) {
+			return sign + digits + result;
+		}
+
+		pad = '';
+		l = 6 - digits.length;
+
+		for (i = 0; i < l; i++) {
+			pad += '0';
+		}
+
+		result = pad + digits + result;
+	}
+
+	{
+		carry = high % BASE;
+		high = high / BASE >>> 0;
+
+		t = 0x100000000 * carry + low;
+		low = t / BASE >>> 0;
+		digits = '' + (t - BASE * low);
+
+		if (low === 0 && high === 0) {
+			return sign + digits + result;
+		}
+
+		pad = '';
+		l = 6 - digits.length;
+
+		for (i = 0; i < l; i++) {
+			pad += '0';
+		}
+
+		result = pad + digits + result;
+	}
+
+	{
+		carry = high % BASE;
+		high = high / BASE >>> 0;
+
+		t = 0x100000000 * carry + low;
+		low = t / BASE >>> 0;
+		digits = '' + (t - BASE * low);
+
+		if (low === 0 && high === 0) {
+			return sign + digits + result;
+		}
+
+		pad = '';
+		l = 6 - digits.length;
+
+		for (i = 0; i < l; i++) {
+			pad += '0';
+		}
+
+		result = pad + digits + result;
+	}
+
+	{
+		carry = high % BASE;
+		t = 0x100000000 * carry + low;
+		digits = '' + t % BASE;
+
+		return sign + digits + result;
+	}
+}
+
+module.exports = readInt8;