ARM: Use the vsqrt instruction when available...

test/mjsunit/math-sqrt.js

 // Copyright 2010 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
 //       with the distribution.
 //     * Neither the name of Google Inc. nor the names of its
 //       contributors may be used to endorse or promote products derived
 //       from this software without specific prior written permission.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 // Tests the special cases specified by ES 15.8.2.17
 
+function test(expected_sqrt, value) {
+  assertEquals(expected_sqrt, Math.sqrt(value));
+  if (isFinite(value)) { 
+    assertEquals(expected_sqrt, Math.pow(value, 0.5));
+  }
+}
+
 // Simple sanity check
-assertEquals(2, Math.sqrt(4));
-assertEquals(0.1, Math.sqrt(0.01));
+test(2, 4);
+test(0.1, 0.01);
 
 // Spec tests
-assertEquals(NaN, Math.sqrt(NaN));
-assertEquals(NaN, Math.sqrt(-1));
-assertEquals(+0, Math.sqrt(+0));
-assertEquals(-0, Math.sqrt(-0));
-assertEquals(Infinity, Math.sqrt(Infinity));
+test(NaN, NaN);
+test(NaN, -1);
+test(+0, +0);
+test(-0, -0);
+test(Infinity, Infinity);
 // -Infinity is smaller than 0 so it should return NaN
-assertEquals(NaN, Math.sqrt(-Infinity));
+test(NaN, -Infinity);
 
-
-