v8/test/mjsunit/number-tostring-big-integer.js
zhengxing.li 0c6b6138bf X87: [test] disable number-tostring test case for x87.
The reason:
  The CL #41255 (https://codereview.chromium.org/2520363002 ) reimplemnt the Number.prototype.toString and the added number-tostring test cases failed at x87.

  Similar to many previos fixing CLs, i.e.: CL #37371 (https://codereview.chromium.org/2111493002 ), the root reason is:
  The Gcc compiler and it's dependent C++ libraris on linux platform use x87 in extended 80-bit double precision by default.
  So the reimplemented DoubleToRadixCString() will generate extended 80-bit double precision result which isn't the expected standard 64-bit double precision
  value.

  Although modifying DoubleToRadixCString() function to manually do the 80-bit <--> 64-bit conversion for each double/float computation step can fix this issue,
  but it wll drop the DoubleToRadixCString() function's performance of other architectures.

  This CL put the failed number-tostring test cases into number-tostring-big-integer.js and disables it for x87.

BUG=

Review-Url: https://codereview.chromium.org/2532073002
Cr-Commit-Position: refs/heads/master@{#41322}
2016-11-28 15:31:20 +00:00

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1.9 KiB
JavaScript

// Copyright 2008 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.
// This file is a subset of the number-tostring mjsunit tests which test
// precision for base conversion for large integers.
// ----------------------------------------------------------------------
// toString
assertEquals("314404114120101444444424000000000000000",
(1.2345e+27).toString(5));