56a486c322
- this avoids using relative include paths which are forbidden by the style guide - makes the code more readable since it's clear which header is meant - allows for starting to use checkdeps BUG=none R=jkummerow@chromium.org, danno@chromium.org LOG=n Review URL: https://codereview.chromium.org/304153016 git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21625 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
93 lines
3.3 KiB
C++
93 lines
3.3 KiB
C++
// Copyright 2006-2008 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include <stdlib.h>
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#include "src/v8.h"
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#include "src/diy-fp.h"
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#include "src/platform.h"
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#include "test/cctest/cctest.h"
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using namespace v8::internal;
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TEST(Subtract) {
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DiyFp diy_fp1 = DiyFp(3, 0);
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DiyFp diy_fp2 = DiyFp(1, 0);
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DiyFp diff = DiyFp::Minus(diy_fp1, diy_fp2);
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CHECK(2 == diff.f()); // NOLINT
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CHECK_EQ(0, diff.e());
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diy_fp1.Subtract(diy_fp2);
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CHECK(2 == diy_fp1.f()); // NOLINT
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CHECK_EQ(0, diy_fp1.e());
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}
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TEST(Multiply) {
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DiyFp diy_fp1 = DiyFp(3, 0);
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DiyFp diy_fp2 = DiyFp(2, 0);
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DiyFp product = DiyFp::Times(diy_fp1, diy_fp2);
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CHECK(0 == product.f()); // NOLINT
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CHECK_EQ(64, product.e());
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diy_fp1.Multiply(diy_fp2);
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CHECK(0 == diy_fp1.f()); // NOLINT
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CHECK_EQ(64, diy_fp1.e());
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diy_fp1 = DiyFp(V8_2PART_UINT64_C(0x80000000, 00000000), 11);
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diy_fp2 = DiyFp(2, 13);
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product = DiyFp::Times(diy_fp1, diy_fp2);
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CHECK(1 == product.f()); // NOLINT
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CHECK_EQ(11 + 13 + 64, product.e());
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// Test rounding.
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diy_fp1 = DiyFp(V8_2PART_UINT64_C(0x80000000, 00000001), 11);
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diy_fp2 = DiyFp(1, 13);
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product = DiyFp::Times(diy_fp1, diy_fp2);
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CHECK(1 == product.f()); // NOLINT
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CHECK_EQ(11 + 13 + 64, product.e());
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diy_fp1 = DiyFp(V8_2PART_UINT64_C(0x7fffffff, ffffffff), 11);
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diy_fp2 = DiyFp(1, 13);
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product = DiyFp::Times(diy_fp1, diy_fp2);
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CHECK(0 == product.f()); // NOLINT
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CHECK_EQ(11 + 13 + 64, product.e());
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// Halfway cases are allowed to round either way. So don't check for it.
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// Big numbers.
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diy_fp1 = DiyFp(V8_2PART_UINT64_C(0xFFFFFFFF, FFFFFFFF), 11);
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diy_fp2 = DiyFp(V8_2PART_UINT64_C(0xFFFFFFFF, FFFFFFFF), 13);
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// 128bit result: 0xfffffffffffffffe0000000000000001
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product = DiyFp::Times(diy_fp1, diy_fp2);
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CHECK(V8_2PART_UINT64_C(0xFFFFFFFF, FFFFFFFe) == product.f());
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CHECK_EQ(11 + 13 + 64, product.e());
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}
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