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node_modules/mumath/normalize.js

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+/**
+ * Get rid of float remainder
+ *
+ * @module mumath/normalize
+ */
+'use strict';
+
+var almost = require('almost-equal');
+
+module.exports = function(value, eps) {
+	//ignore ints
+	var rem = value%1;
+	if (!rem) return value;
+
+	if (eps == null) eps = Number.EPSILON || almost.FLT_EPSILON;
+
+	//pick number’s neighbour, which is way shorter, like 0.4999999999999998 → 0.5
+	//O(20)
+	var range = 5;
+	var len = (rem+'').length;
+
+	for (var i = 1; i < range; i+=.5) {
+		var left = rem - eps*i,
+			right = rem + eps*i;
+
+		var leftStr = left+'', rightStr = right + '';
+
+		if (len - leftStr.length > 2) return value - eps*i;
+		if (len - rightStr.length > 2) return value + eps*i;
+
+		// if (leftStr[2] != rightStr[2])
+	}
+
+	return value;
+};