1 files changed, 82 insertions, 0 deletions
diff --git a/tools/eslint/node_modules/escope/node_modules/es6-map/node_modules/es5-ext/math/_pack-ieee754.js b/tools/eslint/node_modules/escope/node_modules/es6-map/node_modules/es5-ext/math/_pack-ieee754.js
new file mode 100644
index 0000000000..eecda5654d
--- /dev/null
+++ b/tools/eslint/node_modules/escope/node_modules/es6-map/node_modules/es5-ext/math/_pack-ieee754.js
@@ -0,0 +1,82 @@
+// Credit: https://github.com/paulmillr/es6-shim/
+
+'use strict';
+
+var abs = Math.abs, floor = Math.floor, log = Math.log, min = Math.min
+  , pow = Math.pow, LN2 = Math.LN2
+  , roundToEven;
+
+roundToEven = function (n) {
+	var w = floor(n), f = n - w;
+	if (f < 0.5) return w;
+	if (f > 0.5) return w + 1;
+	return w % 2 ? w + 1 : w;
+};
+
+module.exports = function (v, ebits, fbits) {
+	var bias = (1 << (ebits - 1)) - 1, s, e, f, i, bits, str, bytes;
+
+	// Compute sign, exponent, fraction
+	if (isNaN(v)) {
+		// NaN
+		// http://dev.w3.org/2006/webapi/WebIDL/#es-type-mapping
+		e = (1 << ebits) - 1;
+		f = pow(2, fbits - 1);
+		s = 0;
+	} else if (v === Infinity || v === -Infinity) {
+		e = (1 << ebits) - 1;
+		f = 0;
+		s = (v < 0) ? 1 : 0;
+	} else if (v === 0) {
+		e = 0;
+		f = 0;
+		s = (1 / v === -Infinity) ? 1 : 0;
+	} else {
+		s = v < 0;
+		v = abs(v);
+
+		if (v >= pow(2, 1 - bias)) {
+			e = min(floor(log(v) / LN2), 1023);
+			f = roundToEven(v / pow(2, e) * pow(2, fbits));
+			if (f / pow(2, fbits) >= 2) {
+				e = e + 1;
+				f = 1;
+			}
+			if (e > bias) {
+				// Overflow
+				e = (1 << ebits) - 1;
+				f = 0;
+			} else {
+				// Normal
+				e = e + bias;
+				f = f - pow(2, fbits);
+			}
+		} else {
+			// Subnormal
+			e = 0;
+			f = roundToEven(v / pow(2, 1 - bias - fbits));
+		}
+	}
+
+	// Pack sign, exponent, fraction
+	bits = [];
+	for (i = fbits; i; i -= 1) {
+		bits.push(f % 2 ? 1 : 0);
+		f = floor(f / 2);
+	}
+	for (i = ebits; i; i -= 1) {
+		bits.push(e % 2 ? 1 : 0);
+		e = floor(e / 2);
+	}
+	bits.push(s ? 1 : 0);
+	bits.reverse();
+	str = bits.join('');
+
+	// Bits to bytes
+	bytes = [];
+	while (str.length) {
+		bytes.push(parseInt(str.substring(0, 8), 2));
+		str = str.substring(8);
+	}
+	return bytes;
+};