diff options
Diffstat (limited to 'deps/v8/test/mjsunit/compiler/math-ceil.js')
-rw-r--r-- | deps/v8/test/mjsunit/compiler/math-ceil.js | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/deps/v8/test/mjsunit/compiler/math-ceil.js b/deps/v8/test/mjsunit/compiler/math-ceil.js new file mode 100644 index 0000000000..f91348b4d2 --- /dev/null +++ b/deps/v8/test/mjsunit/compiler/math-ceil.js @@ -0,0 +1,39 @@ +// Copyright 2017 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. + +// Flags: --allow-natives-syntax + +// Ensure that the typing rule for Math.ceil deals correctly with +// inputs in the range (-1.0,0.0), which are mapped to -0. +(function() { + function foo(x) { + // Arrange x such that TurboFan infers type PlainNumber \/ NaN. + x = +x; + x = Math.abs(x) - 1.0; + return Object.is(-0, Math.ceil(x)); + } + + assertFalse(foo(1.5)); + assertTrue(foo(0.5)); + %OptimizeFunctionOnNextCall(foo); + assertFalse(foo(1.5)); + assertTrue(foo(0.5)); +})(); + +// Ensure that the typing rule for Math.ceil deals correctly with +// NaN inputs, which are mapped to NaN. +(function() { + function foo(x) { + // Arrange x such that TurboFan infers type PlainNumber \/ NaN. + x = +x; + x = Math.abs(x) - 1.0; + return Object.is(NaN, Math.ceil(x)); + } + + assertFalse(foo(1.5)); + assertTrue(foo(NaN)); + %OptimizeFunctionOnNextCall(foo); + assertFalse(foo(1.5)); + assertTrue(foo(NaN)); +})(); |