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// Copyright 2013 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.
#include <stdlib.h>
#include <limits>
#include "src/v8.h"
#include "src/base/platform/platform.h"
#include "src/code-stubs.h"
#include "src/factory.h"
#include "src/macro-assembler.h"
#include "test/cctest/cctest.h"
#include "test/cctest/test-code-stubs.h"
using namespace v8::internal;
int STDCALL ConvertDToICVersion(double d) {
#if defined(V8_TARGET_BIG_ENDIAN)
const int kExponentIndex = 0;
const int kMantissaIndex = 1;
#elif defined(V8_TARGET_LITTLE_ENDIAN)
const int kExponentIndex = 1;
const int kMantissaIndex = 0;
#else
#error Unsupported endianness
#endif
union { double d; uint32_t u[2]; } dbl;
dbl.d = d;
uint32_t exponent_bits = dbl.u[kExponentIndex];
int32_t shifted_mask = static_cast<int32_t>(Double::kExponentMask >> 32);
int32_t exponent = (((exponent_bits & shifted_mask) >>
(Double::kPhysicalSignificandSize - 32)) -
HeapNumber::kExponentBias);
if (exponent < 0) {
return 0;
}
uint32_t unsigned_exponent = static_cast<uint32_t>(exponent);
int result = 0;
uint32_t max_exponent =
static_cast<uint32_t>(Double::kPhysicalSignificandSize);
if (unsigned_exponent >= max_exponent) {
if ((exponent - Double::kPhysicalSignificandSize) < 32) {
result = dbl.u[kMantissaIndex]
<< (exponent - Double::kPhysicalSignificandSize);
}
} else {
uint64_t big_result =
(bit_cast<uint64_t>(d) & Double::kSignificandMask) | Double::kHiddenBit;
big_result = big_result >> (Double::kPhysicalSignificandSize - exponent);
result = static_cast<uint32_t>(big_result);
}
if (static_cast<int32_t>(exponent_bits) < 0) {
return (0 - result);
} else {
return result;
}
}
void RunOneTruncationTestWithTest(ConvertDToICallWrapper callWrapper,
ConvertDToIFunc func,
double from,
int32_t to) {
int32_t result = (*callWrapper)(func, from);
CHECK_EQ(to, result);
}
int32_t DefaultCallWrapper(ConvertDToIFunc func,
double from) {
return (*func)(from);
}
// #define NaN and Infinity so that it's possible to cut-and-paste these tests
// directly to a .js file and run them.
#define NaN (std::numeric_limits<double>::quiet_NaN())
#define Infinity (std::numeric_limits<double>::infinity())
#define RunOneTruncationTest(p1, p2) \
RunOneTruncationTestWithTest(callWrapper, func, p1, p2)
void RunAllTruncationTests(ConvertDToIFunc func) {
RunAllTruncationTests(DefaultCallWrapper, func);
}
void RunAllTruncationTests(ConvertDToICallWrapper callWrapper,
ConvertDToIFunc func) {
RunOneTruncationTest(0, 0);
RunOneTruncationTest(0.5, 0);
RunOneTruncationTest(-0.5, 0);
RunOneTruncationTest(1.5, 1);
RunOneTruncationTest(-1.5, -1);
RunOneTruncationTest(5.5, 5);
RunOneTruncationTest(-5.0, -5);
RunOneTruncationTest(NaN, 0);
RunOneTruncationTest(Infinity, 0);
RunOneTruncationTest(-NaN, 0);
RunOneTruncationTest(-Infinity, 0);
RunOneTruncationTest(4.94065645841e-324, 0);
RunOneTruncationTest(-4.94065645841e-324, 0);
RunOneTruncationTest(0.9999999999999999, 0);
RunOneTruncationTest(-0.9999999999999999, 0);
RunOneTruncationTest(4294967296.0, 0);
RunOneTruncationTest(-4294967296.0, 0);
RunOneTruncationTest(9223372036854775000.0, -1024);
RunOneTruncationTest(-9223372036854775000.0, 1024);
RunOneTruncationTest(4.5036e+15, 372629504);
RunOneTruncationTest(-4.5036e+15, -372629504);
RunOneTruncationTest(287524199.5377777, 0x11234567);
RunOneTruncationTest(-287524199.5377777, -0x11234567);
RunOneTruncationTest(2300193596.302222, -1994773700);
RunOneTruncationTest(-2300193596.302222, 1994773700);
RunOneTruncationTest(4600387192.604444, 305419896);
RunOneTruncationTest(-4600387192.604444, -305419896);
RunOneTruncationTest(4823855600872397.0, 1737075661);
RunOneTruncationTest(-4823855600872397.0, -1737075661);
RunOneTruncationTest(4503603922337791.0, -1);
RunOneTruncationTest(-4503603922337791.0, 1);
RunOneTruncationTest(4503601774854143.0, 2147483647);
RunOneTruncationTest(-4503601774854143.0, -2147483647);
RunOneTruncationTest(9007207844675582.0, -2);
RunOneTruncationTest(-9007207844675582.0, 2);
RunOneTruncationTest(2.4178527921507624e+24, -536870912);
RunOneTruncationTest(-2.4178527921507624e+24, 536870912);
RunOneTruncationTest(2.417853945072267e+24, -536870912);
RunOneTruncationTest(-2.417853945072267e+24, 536870912);
RunOneTruncationTest(4.8357055843015248e+24, -1073741824);
RunOneTruncationTest(-4.8357055843015248e+24, 1073741824);
RunOneTruncationTest(4.8357078901445341e+24, -1073741824);
RunOneTruncationTest(-4.8357078901445341e+24, 1073741824);
RunOneTruncationTest(2147483647.0, 2147483647);
RunOneTruncationTest(-2147483648.0, -2147483647-1);
RunOneTruncationTest(9.6714111686030497e+24, -2147483647-1);
RunOneTruncationTest(-9.6714111686030497e+24, -2147483647-1);
RunOneTruncationTest(9.6714157802890681e+24, -2147483647-1);
RunOneTruncationTest(-9.6714157802890681e+24, -2147483647-1);
RunOneTruncationTest(1.9342813113834065e+25, -2147483647-1);
RunOneTruncationTest(-1.9342813113834065e+25, -2147483647-1);
RunOneTruncationTest(3.868562622766813e+25, 0);
RunOneTruncationTest(-3.868562622766813e+25, 0);
RunOneTruncationTest(1.7976931348623157e+308, 0);
RunOneTruncationTest(-1.7976931348623157e+308, 0);
}
#undef NaN
#undef Infinity
#undef RunOneTruncationTest
TEST(CodeStubMajorKeys) {
CcTest::InitializeVM();
LocalContext context;
Isolate* isolate = CcTest::i_isolate();
#define CHECK_STUB(NAME) \
{ \
HandleScope scope(isolate); \
NAME##Stub stub_impl(0xabcd, isolate); \
CodeStub* stub = &stub_impl; \
CHECK_EQ(stub->MajorKey(), CodeStub::NAME); \
}
CODE_STUB_LIST(CHECK_STUB);
}
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