Add more exhaustive tests for Math.min and Math.max.

tools/compare-table-gen.js

+// Copyright 2015 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
 // Generates a comparison table test case.
-// Usage: d8 compare-table-gen.js -- lt|lteq|gt|gteq|eq|ne|eq|sne
+// Usage: d8 compare-table-gen.js -- lt|lteq|gt|gteq|eq|ne|eq|sne|min|max
 
 var strings = ["true", "false", "null", "void 0", "0", "0.0", "-0", "\"\"", "-1", "-1.25", "1", "1.25", "-2147483648", "2147483648", "Infinity", "-Infinity", "NaN"];
 var values = new Array(strings.length);
 for (var i = 0; i < strings.length; i++) {
   values[i] = eval(strings[i]);
 }
 
 function test() {
   for (var i = 0; i < values.length; i++) {
     for (var j = 0; j < values.length; j++) {
       var a = values[i];
       var b = values[j];
       var x = expected[i][j];
       assertEquals(x, func(a,b));
       assertEquals(x, left_funcs[i](b));
       assertEquals(x, right_funcs[j](a));
     }
   }
 
   var result = matrix();
   for (var i = 0; i < values.length; i++) {
     for (var j = 0; j < values.length; j++) {
       assertEquals(expected[i][j], result[i][j]);
     }
   }
 }
 
-function gen(name, cmp) {
+function expr(infix, a, cmp, b) {
+  return infix ? a + " " + cmp + " " + b : cmp + "(" + a + ", " + b + ")";
+}
+
+function SpecialToString(x) {
+  if ((1 / x) == -Infinity) return "-0";
+  return "" + x;
+}
+
+function gen(name, cmp, infix) {
 
   print("// Copyright 2015 the V8 project authors. All rights reserved.");
   print("// Use of this source code is governed by a BSD-style license that can be");
   print("// found in the LICENSE file.");
   print();
   print("var values = [" + strings + "];");
 
-  var body = "(function " + name + "(a,b) { return a " + cmp + " b; })";
+  var body = "(function " + name + "(a,b) { return " + expr(infix, "a", cmp, "b") + "; })";
   var func = eval(body);
 
   print("var expected = [");
 
   for (var i = 0; i < values.length; i++) {
     var line = "  [";
     for (var j = 0; j < values.length; j++) {
       if (j > 0) line += ",";
-      line += func(values[i], values[j]) ? "true " : "false";
+      line += SpecialToString(func(values[i], values[j]));
     }
     line += "]";
     if (i < (values.length - 1)) line += ",";
     print(line);
   }
   print("];");
 
   print("var func = " + body + ";");
   print("var left_funcs = [");
 
   for (var i = 0; i < values.length; i++) {
     var value = strings[i];
-    var body = "(function " + name + "_L" + i + "(b) { return " + value + " " + cmp + " b; })";
+    var body = "(function " + name + "_L" + i + "(b) { return " + expr(infix, value, cmp, "b") + "; })";
     var end = i < (values.length - 1) ? "," : "";
     print("  " + body + end);
   }
   print("];");
 
   print("var right_funcs = [");
   for (var i = 0; i < values.length; i++) {
     var value = strings[i];
-    var body = "(function " + name + "_R" + i + "(a) { return a " + cmp + " " + value + "; })";
+    var body = "(function " + name + "_R" + i + "(a) { return " + expr(infix, "a", cmp, value) + "; })";
     var end = i < (values.length - 1) ? "," : "";
     print("  " + body + end);
   }
   print("];");
 
   print("function matrix() {");
   print("  return [");
   for (var i = 0; i < values.length; i++) {
     var line = "    [";
     for (var j = 0; j < values.length; j++) {
       if (j > 0) line += ",";
-      line += strings[i] + " " + cmp + " " + strings[j];
+      line += expr(infix, strings[i], cmp, strings[j]);
     }
     line += "]";
     if (i < (values.length - 1)) line += ",";
     print(line);
   }
   print("  ];");
   print("}");
 
 
   print(test.toString());
   print("test();");
   print("test();");
-
-  print();
-  print();
 }
 
 switch (arguments[0]) {
-  case "lt":   gen("lt",   "<"); break;
-  case "lteq": gen("lteq", "<="); break;
-  case "gt":   gen("gt",   ">"); break;
-  case "gteq": gen("gteq", ">="); break;
-  case "eq":   gen("eq",   "=="); break;
-  case "ne":   gen("ne",   "!="); break;
-  case "seq":  gen("seq",  "==="); break;
-  case "sne":  gen("sne",  "!=="); break;
+  case "lt":   gen("lt",   "<", true); break;
+  case "lteq": gen("lteq", "<=", true); break;
+  case "gt":   gen("gt",   ">", true); break;
+  case "gteq": gen("gteq", ">=", true); break;
+  case "eq":   gen("eq",   "==", true); break;
+  case "ne":   gen("ne",   "!=", true); break;
+  case "seq":  gen("seq",  "===", true); break;
+  case "sne":  gen("sne",  "!==", true); break;
+  case "min":  gen("min",  "Math.min", false); break;
+  case "max":  gen("max",  "Math.max", false); break;
 }