Remove explicit argument type checks in math min and max.

sdk/lib/math/math.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library dart.math;
 
 part "random.dart";
 
 /**
  * Base of the natural logarithms.
@@ skipping 40 matching lines @@
 /**
   * Returns the lesser of two numbers.
   *
   * Returns NaN if either argument is NaN.
   * The lesser of [:-0.0:] and [:0.0:] is [:-0.0:].
   * If the arguments are otherwise equal (including int and doubles with the
   * same mathematical value) then it is unspecified which of the two arguments
   * is returned.
   */
 num min(num a, num b) {
-  if (a is num) {
-    // TODO(floitsch): merge this if into the previous one, once dart2js
-    // correctly propagates types for logical ands.
-    if (b is num) {
-      if (a > b) return b;
-      if (a < b) return a;
-      if (b is double) {
-        // Special case for NaN and -0.0. If one argument is NaN return NaN.
-        // [min] must also distinguish between -0.0 and 0.0.
-        if (a is double) {
-          if (a == 0.0) {
-            // a is either 0.0 or -0.0. b is either 0.0, -0.0 or NaN.
-            // The following returns -0.0 if either a or b is -0.0, and it
-            // returns NaN if b is NaN.
-            return (a + b) * a * b;
-          }
-        }
-        // Check for NaN and b == -0.0.
-        if (a == 0 && b.isNegative || b.isNaN) return b;
-        return a;
+  if (a > b) return b;
+  if (a < b) return a;
+  if (b is double) {
+    // Special case for NaN and -0.0. If one argument is NaN return NaN.
+    // [min] must also distinguish between -0.0 and 0.0.
+    if (a is double) {
+      if (a == 0.0) {
+        // a is either 0.0 or -0.0. b is either 0.0, -0.0 or NaN.
+        // The following returns -0.0 if either a or b is -0.0, and it
+        // returns NaN if b is NaN.
+        return (a + b) * a * b;
       }
-      return a;
     }
-    throw new ArgumentError(b);
+    // Check for NaN and b == -0.0.
+    if (a == 0 && b.isNegative || b.isNaN) return b;
+    return a;
   }
-  throw new ArgumentError(a);
+  return a;
 }
 
 /**
   * Returns the larger of two numbers.
   *
   * Returns NaN if either argument is NaN.
   * The larger of [:-0.0:] and [:0.0:] is [:0.0:]. If the arguments are
   * otherwise equal (including int and doubles with the same mathematical value)
   * then it is unspecified which of the two arguments is returned.
   */
 num max(num a, num b) {
-  if (a is num) {
-    // TODO(floitsch): merge this if into the previous one, once dart2js
-    // correctly propagates types for logical ands.
-    if (b is num) {
-      if (a > b) return a;
-      if (a < b) return b;
-      if (b is double) {
-        // Special case for NaN and -0.0. If one argument is NaN return NaN.
-        // [max] must also distinguish between -0.0 and 0.0.
-        if (a is double) {
-          if (a == 0.0) {
-            // a is either 0.0 or -0.0. b is either 0.0, -0.0, or NaN.
-            // The following returns 0.0 if either a or b is 0.0, and it
-            // returns NaN if b is NaN.
-            return a + b;
-          }
-        }
-        // Check for NaN.
-        if (b.isNaN) return b;
-        return a;
+  if (a > b) return a;
+  if (a < b) return b;
+  if (b is double) {
+    // Special case for NaN and -0.0. If one argument is NaN return NaN.
+    // [max] must also distinguish between -0.0 and 0.0.
+    if (a is double) {
+      if (a == 0.0) {
+        // a is either 0.0 or -0.0. b is either 0.0, -0.0, or NaN.
+        // The following returns 0.0 if either a or b is 0.0, and it
+        // returns NaN if b is NaN.
+        return a + b;
       }
-      // max(-0.0, 0) must return 0.
-      if (b == 0 && a.isNegative) return b;
-      return a;
     }
-    throw new ArgumentError(b);
+    // Check for NaN.
+    if (b.isNaN) return b;
+    return a;
   }
-  throw new ArgumentError(a);
+  // max(-0.0, 0) must return 0.
+  if (b == 0 && a.isNegative) return b;
+  return a;
 }
 
 /**
  * A variant of [atan].
  *
  * Converts both arguments to doubles.
  *
  * Returns the angle between the positive x-axis and the vector ([b],[a]).
  * The result, in radians, is in the range -PI..PI.
  *
@@ skipping 78 matching lines @@
  * Returns NaN if [x] is NaN.
  */
 external double exp(num x);
 
 /**
  * Converts [x] to a double and returns the natural logarithm of the value.
  * Returns negative infinity if [x] is equal to zero.
  * Returns NaN if [x] is NaN or less than zero.
  */
 external double log(num x);