// Copyright 2010 the V8 project authors. All rights reserved.
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// 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
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//       with the distribution.
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// 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
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// (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

function zero() {
  var x = 0.5;
  return (function() { return x - 0.5; })();
}

function test() {
  assertEquals(0, Math.abs(0));
  assertEquals(0, Math.abs(zero()));
  assertEquals(0, Math.abs(-0));
  assertEquals(Infinity, Math.abs(Infinity));
  assertEquals(Infinity, Math.abs(-Infinity));
  assertEquals(NaN, Math.abs(NaN));
  assertEquals(NaN, Math.abs(-NaN));
  assertEquals('Infinity', Math.abs(Number('+Infinity')).toString());
  assertEquals('Infinity', Math.abs(Number('-Infinity')).toString());
  assertEquals('NaN', Math.abs(NaN).toString());
  assertEquals('NaN', Math.abs(-NaN).toString());

  assertEquals(0.1, Math.abs(0.1));
  assertEquals(0.5, Math.abs(0.5));
  assertEquals(0.1, Math.abs(-0.1));
  assertEquals(0.5, Math.abs(-0.5));
  assertEquals(1, Math.abs(1));
  assertEquals(1.1, Math.abs(1.1));
  assertEquals(1.5, Math.abs(1.5));
  assertEquals(1, Math.abs(-1));
  assertEquals(1.1, Math.abs(-1.1));
  assertEquals(1.5, Math.abs(-1.5));

  assertEquals(Number.MIN_VALUE, Math.abs(Number.MIN_VALUE));
  assertEquals(Number.MIN_VALUE, Math.abs(-Number.MIN_VALUE));
  assertEquals(Number.MAX_VALUE, Math.abs(Number.MAX_VALUE));
  assertEquals(Number.MAX_VALUE, Math.abs(-Number.MAX_VALUE));

  // 2^30 is a smi boundary on arm and ia32.
  var two_30 = 1 << 30;

  assertEquals(two_30, Math.abs(two_30));
  assertEquals(two_30, Math.abs(-two_30));

  assertEquals(two_30 + 1, Math.abs(two_30 + 1));
  assertEquals(two_30 + 1, Math.abs(-two_30 - 1));

  assertEquals(two_30 - 1, Math.abs(two_30 - 1));
  assertEquals(two_30 - 1, Math.abs(-two_30 + 1));

  // 2^31 is a smi boundary on x64.
  var two_31 = 2 * two_30;

  assertEquals(two_31, Math.abs(two_31));
  assertEquals(two_31, Math.abs(-two_31));

  assertEquals(two_31 + 1, Math.abs(two_31 + 1));
  assertEquals(two_31 + 1, Math.abs(-two_31 - 1));

  assertEquals(two_31 - 1, Math.abs(two_31 - 1));
  assertEquals(two_31 - 1, Math.abs(-two_31 + 1));

  assertEquals(NaN, Math.abs("not a number"));
  assertEquals(NaN, Math.abs([1, 2, 3]));
  assertEquals(42, Math.abs({valueOf: function() { return 42; } }));
  assertEquals(42, Math.abs({valueOf: function() { return -42; } }));
}


// Test in a loop to cover the custom IC and GC-related issues.
for (var i = 0; i < 500; i++) {
  test();
}

@@ -1625,16 +1625,39 @@
 size=256
+ --allow-natives-syntax
 %0A%0Afuncti
@@ -3916,12 +3916,322 @@
   test();%0A%7D%0A
+%0A// Regression test for optimized version of Math.abs, see:%0A// http://codereview.chromium.org/6875002.%0Afunction foo(x) %7B%0A  return Math.abs(x);%0A%7D%0A// Get some smi type feedback.%0Afor(var i = 0; i %3C 1000; i++) %7B%0A  foo(-i);%0A%7D%0AassertEquals(42, foo(-42));%0A%25OptimizeFunctionOnNextCall(foo)%0AassertEquals(42, foo(-42));%0A

Add regression test for optimized version of Math.abs.