Minor fixes

Author: perak

.DS_Store

@@ -2937,12 +2937,12 @@ QuantumCircuit.prototype.matrixHasComplexElement = function(M) {
 			for(var c = 0; c < row.length; c++) {
 				var cell = row[c];
 
-				if(cell instanceof math.Complex) {
+				if(cell instanceof math.Complex || ((typeof cell == "object") && ((cell.mathjs && cell.mathjs == "Complex") || (cell.type && cell.type == "Complex")))) {
 					return true;
 				}
 			}
 		} else {
-			if(row instanceof math.Complex) {
+			if(row instanceof math.Complex || ((typeof row == "object") && ((row.mathjs && row.mathjs == "Complex") || (row.type && row.type == "Complex")))) {
 				return true;
 			}
 		}
@@ -3420,6 +3420,7 @@ QuantumCircuit.prototype.isEmptyPlace = function(col, wires, usingCregs) {
 	for(var wire = minWire; wire <= maxWire; wire++) {
 		if(!this.isEmptyCell(col, wire)) {
 			allEmpty = false;
+			break;
 		}
 	}
 
@@ -3444,6 +3445,7 @@ QuantumCircuit.prototype.lastNonEmptyPlace = function(wires, usingCregs) {
 		for(var wire = minWire; wire <= maxWire; wire++) {
 			if(!this.isEmptyCell(col, wire)) {
 				allEmpty = false;
+				break;
 			}
 		}
 	}
@@ -4121,15 +4123,20 @@ QuantumCircuit.prototype.chanceMap = function() {
 };
 
 
-function binStr(i, len) {
-	var bin = i.toString(2);
+function binStr(n, len) {
+	var bin = n.toString(2);
 	while(bin.length < len) {
 		bin = "0" + bin;
 	}
 	return bin;
 }
 
 
+function reverseBitwise(n, len) {
+	return parseInt(binStr(n, len).split("").reverse().join(""), 2);
+}
+
+
 QuantumCircuit.prototype.resetQubit = function(wire, value) {
 	var U = [
 		[0, 0],
@@ -7455,6 +7462,7 @@ QuantumCircuit.prototype.exportToSVG = function(options) {
 				var centerX = gateX + (options.cellWidth / 2);
 
 				var paramsStr = "";
+				var paramsCount = 0;
 				for(var paramName in gate.options.params) {
 					if(paramsStr) {
 						paramsStr += ", ";
@@ -7470,6 +7478,11 @@ QuantumCircuit.prototype.exportToSVG = function(options) {
 					}
 
 					paramsStr += paramVal;
+					paramsCount++;
+				}
+
+				if(paramsStr.length > 26) {
+					paramsStr = "(" + paramsCount + " params)";
 				}
 				svg += "<text class=\"qc-gate-params\" x=\"" + centerX + "\" y=\"" + (gateY + options.cellHeight + options.paramTextHeight) + "\" dominant-baseline=\"hanging\" text-anchor=\"middle\" font-size=\"75%\">" + paramsStr + "</text>";
 			}
@@ -7696,7 +7709,7 @@ QuantumCircuit.prototype.exportToSVG = function(options) {
 			if(options.customGate) {
 				initSymbol = qubitLetter(wire, numRows);
 			}
-			svg += "<text class=\"qc-wire-init\" x=\"0\" y=\"" + wireY + "\" dominant-baseline=\"middle\" text-anchor=\"start\">|" + initSymbol + "&#x027E9;</text>";
+			svg += "<text class=\"qc-wire-init\" x=\"0\" y=\"" + wireY + "\" dominant-baseline=\"middle\" text-anchor=\"start\">|" + initSymbol + "⟩</text>";
 			svg += "<line class=\"qc-wire\" x1=\"" + options.wireMargin + "\" x2=\"" + totalWireWidth + "\" y1=\"" + wireY + "\" y2=\"" + wireY + "\" stroke=\"" + options.wireColor + "\" stroke-width=\"" + options.wireWidth + "\" />";
 			svg += "<text class=\"qc-wire-label\" x=\"" + options.wireMargin + "\" y=\"" + (wireY - (options.wireTextHeight*2)) + "\" dominant-baseline=\"hanging\" text-anchor=\"start\" font-size=\"75%\">q" + wire + "</text>";
 		}
@@ -12436,7 +12449,7 @@ QuantumCircuit.prototype.continue = function() {
 	});
 };
 
-QuantumCircuit.prototype.stateAsArray = function(onlyPossible, skipItems, blockSize) {
+QuantumCircuit.prototype.stateAsArray = function(onlyPossible, skipItems, blockSize, reverseBits) {
 	var state = [];
 
 	var numAmplitudes = this.numAmplitudes();
@@ -12446,7 +12459,13 @@ QuantumCircuit.prototype.stateAsArray = function(onlyPossible, skipItems, blockS
 
 	var count = 0;
 	for(var i = 0; i < numAmplitudes; i++) {
-		var amplitude = math.round(this.state[i] || math.complex(0, 0), 14);
+		var ampIndex = i;
+		if(reverseBits) {
+			ampIndex = reverseBitwise(i, this.numQubits);
+		}
+
+		var amplitude = math.round(this.state[ampIndex] || math.complex(0, 0), 14);
+
 		if(!onlyPossible || (amplitude.re || amplitude.im)) {
 			if(count >= skipItems) {
 				var indexBinStr = i.toString(2);
@@ -12485,7 +12504,7 @@ QuantumCircuit.prototype.stateAsArray = function(onlyPossible, skipItems, blockS
 	return state;
 };
 
-QuantumCircuit.prototype.stateAsSimpleArray = function() {
+QuantumCircuit.prototype.stateAsSimpleArray = function(reverseBits) {
 
 	var numAmplitudes = this.numAmplitudes();
 	if(!this.state) {
@@ -12494,7 +12513,12 @@ QuantumCircuit.prototype.stateAsSimpleArray = function() {
 
 	var state = [];
 	for(var i = 0; i < numAmplitudes; i++) {
-		state.push(math.round(this.state[i] || math.complex(0, 0), 14));
+		var ampIndex = i;
+		if(reverseBits) {
+			ampIndex = reverseBitwise(i, this.numQubits);
+		}
+
+		state.push(math.round(this.state[ampIndex] || math.complex(0, 0), 14));
 	}
 	return state;
 };