Split test/mjsunit/math-floor into smaller chunks

test/mjsunit/math-floor.js

-// Copyright 2011 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.
-
-// Flags: --max-new-space-size=256 --allow-natives-syntax
-
-var test_id = 0;
-
-function testFloor(expect, input) {
-  var test = new Function('n',
-                          '"' + (test_id++) + '";return Math.floor(n)');
-  assertEquals(expect, test(input));
-  assertEquals(expect, test(input));
-  assertEquals(expect, test(input));
-  %OptimizeFunctionOnNextCall(test);
-  assertEquals(expect, test(input));
-}
-
-function zero() {
-  var x = 0.5;
-  return (function() { return x - 0.5; })();
-}
-
-function test() {
-  testFloor(0, 0);
-  testFloor(0, zero());
-  testFloor(-0, -0);
-  testFloor(Infinity, Infinity);
-  testFloor(-Infinity, -Infinity);
-  testFloor(NaN, NaN);
-
-  // Ensure that a negative zero coming from Math.floor is properly handled
-  // by other operations.
-  function ifloor(x) {
-    return 1 / Math.floor(x);
-  }
-  assertEquals(-Infinity, ifloor(-0));
-  assertEquals(-Infinity, ifloor(-0));
-  assertEquals(-Infinity, ifloor(-0));
-  %OptimizeFunctionOnNextCall(ifloor);
-  assertEquals(-Infinity, ifloor(-0));
-
-  testFloor(0, 0.1);
-  testFloor(0, 0.49999999999999994);
-  testFloor(0, 0.5);
-  testFloor(0, 0.7);
-  testFloor(-1, -0.1);
-  testFloor(-1, -0.49999999999999994);
-  testFloor(-1, -0.5);
-  testFloor(-1, -0.7);
-  testFloor(1, 1);
-  testFloor(1, 1.1);
-  testFloor(1, 1.5);
-  testFloor(1, 1.7);
-  testFloor(-1, -1);
-  testFloor(-2, -1.1);
-  testFloor(-2, -1.5);
-  testFloor(-2, -1.7);
-
-  testFloor(0, Number.MIN_VALUE);
-  testFloor(-1, -Number.MIN_VALUE);
-  testFloor(Number.MAX_VALUE, Number.MAX_VALUE);
-  testFloor(-Number.MAX_VALUE, -Number.MAX_VALUE);
-  testFloor(Infinity, Infinity);
-  testFloor(-Infinity, -Infinity);
-
-  // 2^30 is a smi boundary.
-  var two_30 = 1 << 30;
-
-  testFloor(two_30, two_30);
-  testFloor(two_30, two_30 + 0.1);
-  testFloor(two_30, two_30 + 0.5);
-  testFloor(two_30, two_30 + 0.7);
-
-  testFloor(two_30 - 1, two_30 - 1);
-  testFloor(two_30 - 1, two_30 - 1 + 0.1);
-  testFloor(two_30 - 1, two_30 - 1 + 0.5);
-  testFloor(two_30 - 1, two_30 - 1 + 0.7);
-
-  testFloor(-two_30, -two_30);
-  testFloor(-two_30, -two_30 + 0.1);
-  testFloor(-two_30, -two_30 + 0.5);
-  testFloor(-two_30, -two_30 + 0.7);
-
-  testFloor(-two_30 + 1, -two_30 + 1);
-  testFloor(-two_30 + 1, -two_30 + 1 + 0.1);
-  testFloor(-two_30 + 1, -two_30 + 1 + 0.5);
-  testFloor(-two_30 + 1, -two_30 + 1 + 0.7);
-
-  // 2^52 is a precision boundary.
-  var two_52 = (1 << 30) * (1 << 22);
-
-  testFloor(two_52, two_52);
-  testFloor(two_52, two_52 + 0.1);
-  assertEquals(two_52, two_52 + 0.5);
-  testFloor(two_52, two_52 + 0.5);
-  assertEquals(two_52 + 1, two_52 + 0.7);
-  testFloor(two_52 + 1, two_52 + 0.7);
-
-  testFloor(two_52 - 1, two_52 - 1);
-  testFloor(two_52 - 1, two_52 - 1 + 0.1);
-  testFloor(two_52 - 1, two_52 - 1 + 0.5);
-  testFloor(two_52 - 1, two_52 - 1 + 0.7);
-
-  testFloor(-two_52, -two_52);
-  testFloor(-two_52, -two_52 + 0.1);
-  testFloor(-two_52, -two_52 + 0.5);
-  testFloor(-two_52, -two_52 + 0.7);
-
-  testFloor(-two_52 + 1, -two_52 + 1);
-  testFloor(-two_52 + 1, -two_52 + 1 + 0.1);
-  testFloor(-two_52 + 1, -two_52 + 1 + 0.5);
-  testFloor(-two_52 + 1, -two_52 + 1 + 0.7);
-}
-
-
-// Test in a loop to cover the custom IC and GC-related issues.
-for (var i = 0; i < 500; i++) {
-  test();
-}
-
-
-// Regression test for a bug where a negative zero coming from Math.floor
-// was not properly handled by other operations.
-function floorsum(i, n) {
-  var ret = Math.floor(n);
-  while (--i > 0) {
-    ret += Math.floor(n);
-  }
-  return ret;
-}
-assertEquals(-0, floorsum(1, -0));
-%OptimizeFunctionOnNextCall(floorsum);
-// The optimized function will deopt.  Run it with enough iterations to try
-// to optimize via OSR (triggering the bug).
-assertEquals(-0, floorsum(100000, -0));