/
test-conversions.cc
6029 lines (4473 loc) · 192 KB
/
test-conversions.cc
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// Copyright 2012 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 <string.h>
#include "cctest.h"
#include "double-conversion/double-conversion.h"
#include "double-conversion/ieee.h"
#include "double-conversion/utils.h"
// DoubleToString is already tested in test-dtoa.cc.
using namespace double_conversion;
TEST(DoubleToShortest) {
const int kBufferSize = 128;
char buffer[kBufferSize];
StringBuilder builder(buffer, kBufferSize);
int flags = DoubleToStringConverter::UNIQUE_ZERO |
DoubleToStringConverter::EMIT_POSITIVE_EXPONENT_SIGN;
DoubleToStringConverter dc(flags, NULL, NULL, 'e', -6, 21, 0, 0);
CHECK(dc.ToShortest(0.0, &builder));
CHECK_EQ("0", builder.Finalize());
builder.Reset();
CHECK(dc.ToShortest(12345.0, &builder));
CHECK_EQ("12345", builder.Finalize());
builder.Reset();
CHECK(dc.ToShortest(12345e23, &builder));
CHECK_EQ("1.2345e+27", builder.Finalize());
builder.Reset();
CHECK(dc.ToShortest(1e21, &builder));
CHECK_EQ("1e+21", builder.Finalize());
builder.Reset();
CHECK(dc.ToShortest(1e-23, &builder));
CHECK_EQ("1e-23", builder.Finalize());
builder.Reset();
CHECK(dc.ToShortest(1e20, &builder));
CHECK_EQ("100000000000000000000", builder.Finalize());
builder.Reset();
CHECK(dc.ToShortest(111111111111111111111.0, &builder));
CHECK_EQ("111111111111111110000", builder.Finalize());
builder.Reset();
CHECK(dc.ToShortest(1111111111111111111111.0, &builder));
CHECK_EQ("1.1111111111111111e+21", builder.Finalize());
builder.Reset();
CHECK(dc.ToShortest(11111111111111111111111.0, &builder));
CHECK_EQ("1.1111111111111111e+22", builder.Finalize());
builder.Reset();
CHECK(dc.ToShortest(-0.00001, &builder));
CHECK_EQ("-0.00001", builder.Finalize());
builder.Reset();
CHECK(dc.ToShortest(-0.000001, &builder));
CHECK_EQ("-0.000001", builder.Finalize());
builder.Reset();
CHECK(dc.ToShortest(-0.0000001, &builder));
CHECK_EQ("-1e-7", builder.Finalize());
builder.Reset();
CHECK(dc.ToShortest(-0.0, &builder));
CHECK_EQ("0", builder.Finalize());
// Test min_exponent_width
flags = DoubleToStringConverter::UNIQUE_ZERO |
DoubleToStringConverter::EMIT_POSITIVE_EXPONENT_SIGN;
DoubleToStringConverter dcExpWidth2(flags, NULL, NULL, 'e', -4, 6, 0, 0, 2);
builder.Reset();
CHECK(dcExpWidth2.ToShortest(11111111111.0, &builder));
CHECK_EQ("1.1111111111e+10", builder.Finalize());
builder.Reset();
CHECK(dcExpWidth2.ToShortest(1111111111.0, &builder));
CHECK_EQ("1.111111111e+09", builder.Finalize());
builder.Reset();
CHECK(dcExpWidth2.ToShortest(1111111.0, &builder));
CHECK_EQ("1.111111e+06", builder.Finalize());
builder.Reset();
CHECK(dcExpWidth2.ToShortest(111111.0, &builder));
CHECK_EQ("111111", builder.Finalize());
builder.Reset();
CHECK(dcExpWidth2.ToShortest(10000000000.0, &builder));
CHECK_EQ("1e+10", builder.Finalize());
builder.Reset();
CHECK(dcExpWidth2.ToShortest(1000000000.0, &builder));
CHECK_EQ("1e+09", builder.Finalize());
DoubleToStringConverter dcExpWidth0(flags, NULL, NULL, 'e', -4, 6, 0, 0, 0);
builder.Reset();
CHECK(dcExpWidth0.ToShortest(11111111111.0, &builder));
CHECK_EQ("1.1111111111e+10", builder.Finalize());
builder.Reset();
CHECK(dcExpWidth0.ToShortest(1111111111.0, &builder));
CHECK_EQ("1.111111111e+9", builder.Finalize());
builder.Reset();
CHECK(dcExpWidth0.ToShortest(1111111.0, &builder));
CHECK_EQ("1.111111e+6", builder.Finalize());
builder.Reset();
CHECK(dcExpWidth0.ToShortest(111111.0, &builder));
CHECK_EQ("111111", builder.Finalize());
builder.Reset();
CHECK(dcExpWidth0.ToShortest(10000000000.0, &builder));
CHECK_EQ("1e+10", builder.Finalize());
builder.Reset();
CHECK(dcExpWidth0.ToShortest(1000000000.0, &builder));
CHECK_EQ("1e+9", builder.Finalize());
// Set min_exponent_width to 100 is equal to 5,
// as kMaxExponentLength is defined to 5 in double-to-string.cc
DoubleToStringConverter dcExpWidth100(flags, NULL, NULL, 'e', -4, 6, 0, 0, 100);
builder.Reset();
CHECK(dcExpWidth100.ToShortest(11111111111.0, &builder));
CHECK_EQ("1.1111111111e+00010", builder.Finalize());
builder.Reset();
CHECK(dcExpWidth100.ToShortest(1111111111.0, &builder));
CHECK_EQ("1.111111111e+00009", builder.Finalize());
builder.Reset();
CHECK(dcExpWidth100.ToShortest(1111111.0, &builder));
CHECK_EQ("1.111111e+00006", builder.Finalize());
builder.Reset();
CHECK(dcExpWidth100.ToShortest(111111.0, &builder));
CHECK_EQ("111111", builder.Finalize());
builder.Reset();
CHECK(dcExpWidth100.ToShortest(10000000000.0, &builder));
CHECK_EQ("1e+00010", builder.Finalize());
builder.Reset();
CHECK(dcExpWidth100.ToShortest(1000000000.0, &builder));
CHECK_EQ("1e+00009", builder.Finalize());
// End of min_exponent_width testing
flags = DoubleToStringConverter::NO_FLAGS;
DoubleToStringConverter dc2(flags, NULL, NULL, 'e', -1, 1, 0, 0);
builder.Reset();
CHECK(dc2.ToShortest(0.1, &builder));
CHECK_EQ("0.1", builder.Finalize());
builder.Reset();
CHECK(dc2.ToShortest(0.01, &builder));
CHECK_EQ("1e-2", builder.Finalize());
builder.Reset();
CHECK(dc2.ToShortest(1.0, &builder));
CHECK_EQ("1", builder.Finalize());
builder.Reset();
CHECK(dc2.ToShortest(10.0, &builder));
CHECK_EQ("1e1", builder.Finalize());
builder.Reset();
CHECK(dc2.ToShortest(-0.0, &builder));
CHECK_EQ("-0", builder.Finalize());
flags = DoubleToStringConverter::EMIT_TRAILING_DECIMAL_POINT |
DoubleToStringConverter::EMIT_TRAILING_ZERO_AFTER_POINT;
DoubleToStringConverter dc3(flags, NULL, NULL, 'E', -5, 5, 0, 0);
builder.Reset();
CHECK(dc3.ToShortest(0.1, &builder));
CHECK_EQ("0.1", builder.Finalize());
builder.Reset();
CHECK(dc3.ToShortest(1.0, &builder));
CHECK_EQ("1.0", builder.Finalize());
builder.Reset();
CHECK(dc3.ToShortest(10000.0, &builder));
CHECK_EQ("10000.0", builder.Finalize());
builder.Reset();
CHECK(dc3.ToShortest(100000.0, &builder));
CHECK_EQ("1E5", builder.Finalize());
// Test the examples in the comments of ToShortest.
flags = DoubleToStringConverter::EMIT_POSITIVE_EXPONENT_SIGN;
DoubleToStringConverter dc4(flags, NULL, NULL, 'e', -6, 21, 0, 0);
builder.Reset();
CHECK(dc4.ToShortest(0.000001, &builder));
CHECK_EQ("0.000001", builder.Finalize());
builder.Reset();
CHECK(dc4.ToShortest(0.0000001, &builder));
CHECK_EQ("1e-7", builder.Finalize());
builder.Reset();
CHECK(dc4.ToShortest(111111111111111111111.0, &builder));
CHECK_EQ("111111111111111110000", builder.Finalize());
builder.Reset();
CHECK(dc4.ToShortest(100000000000000000000.0, &builder));
CHECK_EQ("100000000000000000000", builder.Finalize());
builder.Reset();
CHECK(dc4.ToShortest(1111111111111111111111.0, &builder));
CHECK_EQ("1.1111111111111111e+21", builder.Finalize());
// Test special value handling.
DoubleToStringConverter dc5(flags, NULL, NULL, 'e', 0, 0, 0, 0);
builder.Reset();
CHECK(!dc5.ToShortest(Double::Infinity(), &builder));
builder.Reset();
CHECK(!dc5.ToShortest(-Double::Infinity(), &builder));
builder.Reset();
CHECK(!dc5.ToShortest(Double::NaN(), &builder));
builder.Reset();
CHECK(!dc5.ToShortest(-Double::NaN(), &builder));
DoubleToStringConverter dc6(flags, "Infinity", "NaN", 'e', 0, 0, 0, 0);
builder.Reset();
CHECK(dc6.ToShortest(Double::Infinity(), &builder));
CHECK_EQ("Infinity", builder.Finalize());
builder.Reset();
CHECK(dc6.ToShortest(-Double::Infinity(), &builder));
CHECK_EQ("-Infinity", builder.Finalize());
builder.Reset();
CHECK(dc6.ToShortest(Double::NaN(), &builder));
CHECK_EQ("NaN", builder.Finalize());
builder.Reset();
CHECK(dc6.ToShortest(-Double::NaN(), &builder));
CHECK_EQ("NaN", builder.Finalize());
// Test examples with one significant digit.
flags = DoubleToStringConverter::EMIT_TRAILING_DECIMAL_POINT |
DoubleToStringConverter::EMIT_TRAILING_ZERO_AFTER_POINT;
DoubleToStringConverter dc7(flags, NULL, NULL, 'e', 0, 0, 0, 0);
flags = DoubleToStringConverter::EMIT_TRAILING_DECIMAL_POINT |
DoubleToStringConverter::EMIT_TRAILING_ZERO_AFTER_POINT |
DoubleToStringConverter::EMIT_TRAILING_DECIMAL_POINT_IN_EXPONENTIAL;
DoubleToStringConverter dc8(flags, NULL, NULL, 'e', 0, 0, 0, 0);
flags = DoubleToStringConverter::EMIT_TRAILING_DECIMAL_POINT |
DoubleToStringConverter::EMIT_TRAILING_ZERO_AFTER_POINT |
DoubleToStringConverter::EMIT_TRAILING_DECIMAL_POINT_IN_EXPONENTIAL |
DoubleToStringConverter::EMIT_TRAILING_ZERO_AFTER_POINT_IN_EXPONENTIAL;
DoubleToStringConverter dc9(flags, NULL, NULL, 'e', 0, 0, 0, 0);
builder.Reset();
CHECK(dc7.ToShortest(0.0009, &builder));
CHECK_EQ("9e-4", builder.Finalize());
builder.Reset();
CHECK(dc8.ToShortest(0.0009, &builder));
CHECK_EQ("9.e-4", builder.Finalize());
builder.Reset();
CHECK(dc9.ToShortest(0.0009, &builder));
CHECK_EQ("9.0e-4", builder.Finalize());
}
TEST(DoubleToShortestSingle) {
const int kBufferSize = 128;
char buffer[kBufferSize];
StringBuilder builder(buffer, kBufferSize);
int flags = DoubleToStringConverter::UNIQUE_ZERO |
DoubleToStringConverter::EMIT_POSITIVE_EXPONENT_SIGN;
DoubleToStringConverter dc(flags, NULL, NULL, 'e', -6, 21, 0, 0);
CHECK(dc.ToShortestSingle(0.0f, &builder));
CHECK_EQ("0", builder.Finalize());
builder.Reset();
CHECK(dc.ToShortestSingle(12345.0f, &builder));
CHECK_EQ("12345", builder.Finalize());
builder.Reset();
CHECK(dc.ToShortestSingle(12345e23f, &builder));
CHECK_EQ("1.2345e+27", builder.Finalize());
builder.Reset();
CHECK(dc.ToShortestSingle(1e21f, &builder));
CHECK_EQ("1e+21", builder.Finalize());
builder.Reset();
CHECK(dc.ToShortestSingle(1e20f, &builder));
CHECK_EQ("100000000000000000000", builder.Finalize());
builder.Reset();
CHECK(dc.ToShortestSingle(111111111111111111111.0f, &builder));
CHECK_EQ("111111110000000000000", builder.Finalize());
builder.Reset();
CHECK(dc.ToShortestSingle(1111111111111111111111.0f, &builder));
CHECK_EQ("1.11111114e+21", builder.Finalize());
builder.Reset();
CHECK(dc.ToShortestSingle(11111111111111111111111.0f, &builder));
CHECK_EQ("1.1111111e+22", builder.Finalize());
builder.Reset();
CHECK(dc.ToShortestSingle(-0.00001f, &builder));
CHECK_EQ("-0.00001", builder.Finalize());
builder.Reset();
CHECK(dc.ToShortestSingle(-0.000001f, &builder));
CHECK_EQ("-0.000001", builder.Finalize());
builder.Reset();
CHECK(dc.ToShortestSingle(-0.0000001f, &builder));
CHECK_EQ("-1e-7", builder.Finalize());
builder.Reset();
CHECK(dc.ToShortestSingle(-0.0f, &builder));
CHECK_EQ("0", builder.Finalize());
flags = DoubleToStringConverter::NO_FLAGS;
DoubleToStringConverter dc2(flags, NULL, NULL, 'e', -1, 1, 0, 0);
builder.Reset();
CHECK(dc2.ToShortestSingle(0.1f, &builder));
CHECK_EQ("0.1", builder.Finalize());
builder.Reset();
CHECK(dc2.ToShortestSingle(0.01f, &builder));
CHECK_EQ("1e-2", builder.Finalize());
builder.Reset();
CHECK(dc2.ToShortestSingle(1.0f, &builder));
CHECK_EQ("1", builder.Finalize());
builder.Reset();
CHECK(dc2.ToShortestSingle(10.0f, &builder));
CHECK_EQ("1e1", builder.Finalize());
builder.Reset();
CHECK(dc2.ToShortestSingle(-0.0f, &builder));
CHECK_EQ("-0", builder.Finalize());
flags = DoubleToStringConverter::EMIT_TRAILING_DECIMAL_POINT |
DoubleToStringConverter::EMIT_TRAILING_ZERO_AFTER_POINT;
DoubleToStringConverter dc3(flags, NULL, NULL, 'E', -5, 5, 0, 0);
builder.Reset();
CHECK(dc3.ToShortestSingle(0.1f, &builder));
CHECK_EQ("0.1", builder.Finalize());
builder.Reset();
CHECK(dc3.ToShortestSingle(1.0f, &builder));
CHECK_EQ("1.0", builder.Finalize());
builder.Reset();
CHECK(dc3.ToShortestSingle(10000.0f, &builder));
CHECK_EQ("10000.0", builder.Finalize());
builder.Reset();
CHECK(dc3.ToShortestSingle(100000.0f, &builder));
CHECK_EQ("1E5", builder.Finalize());
// Test the examples in the comments of ToShortestSingle.
flags = DoubleToStringConverter::EMIT_POSITIVE_EXPONENT_SIGN;
DoubleToStringConverter dc4(flags, NULL, NULL, 'e', -6, 21, 0, 0);
builder.Reset();
CHECK(dc4.ToShortestSingle(0.000001f, &builder));
CHECK_EQ("0.000001", builder.Finalize());
builder.Reset();
CHECK(dc4.ToShortestSingle(0.0000001f, &builder));
CHECK_EQ("1e-7", builder.Finalize());
builder.Reset();
CHECK(dc4.ToShortestSingle(111111111111111111111.0f, &builder));
CHECK_EQ("111111110000000000000", builder.Finalize());
builder.Reset();
CHECK(dc4.ToShortestSingle(100000000000000000000.0f, &builder));
CHECK_EQ("100000000000000000000", builder.Finalize());
builder.Reset();
CHECK(dc4.ToShortestSingle(1111111111111111111111.0f, &builder));
CHECK_EQ("1.11111114e+21", builder.Finalize());
// Test special value handling.
DoubleToStringConverter dc5(flags, NULL, NULL, 'e', 0, 0, 0, 0);
builder.Reset();
CHECK(!dc5.ToShortestSingle(Single::Infinity(), &builder));
builder.Reset();
CHECK(!dc5.ToShortestSingle(-Single::Infinity(), &builder));
builder.Reset();
CHECK(!dc5.ToShortestSingle(Single::NaN(), &builder));
builder.Reset();
CHECK(!dc5.ToShortestSingle(-Single::NaN(), &builder));
DoubleToStringConverter dc6(flags, "Infinity", "NaN", 'e', 0, 0, 0, 0);
builder.Reset();
CHECK(dc6.ToShortestSingle(Single::Infinity(), &builder));
CHECK_EQ("Infinity", builder.Finalize());
builder.Reset();
CHECK(dc6.ToShortestSingle(-Single::Infinity(), &builder));
CHECK_EQ("-Infinity", builder.Finalize());
builder.Reset();
CHECK(dc6.ToShortestSingle(Single::NaN(), &builder));
CHECK_EQ("NaN", builder.Finalize());
builder.Reset();
CHECK(dc6.ToShortestSingle(-Single::NaN(), &builder));
CHECK_EQ("NaN", builder.Finalize());
}
TEST(DoubleToFixed) {
const int kBufferSize = 168;
char buffer[kBufferSize];
StringBuilder builder(buffer, kBufferSize);
int flags = DoubleToStringConverter::EMIT_POSITIVE_EXPONENT_SIGN |
DoubleToStringConverter::UNIQUE_ZERO;
DoubleToStringConverter dc(flags, "Infinity", "NaN", 'e',
0, 0, 0, 0); // Padding zeroes.
CHECK(dc.ToFixed(0.0, 0, &builder));
CHECK_EQ("0", builder.Finalize());
builder.Reset();
CHECK(dc.ToFixed(-0.0, 0, &builder));
CHECK_EQ("0", builder.Finalize());
builder.Reset();
CHECK(dc.ToFixed(-0.0, 1, &builder));
CHECK_EQ("0.0", builder.Finalize());
builder.Reset();
CHECK(dc.ToFixed(-0.0, 1, &builder));
CHECK_EQ("0.0", builder.Finalize());
DOUBLE_CONVERSION_ASSERT(DoubleToStringConverter::kMaxFixedDigitsBeforePoint == 60);
DOUBLE_CONVERSION_ASSERT(DoubleToStringConverter::kMaxFixedDigitsAfterPoint == 100);
// Most of the 100 digit tests were copied from
// https://searchfox.org/mozilla-central/source/js/src/tests/non262/Number/toFixed-values.js.
builder.Reset();
CHECK(dc.ToFixed(
0.0, DoubleToStringConverter::kMaxFixedDigitsAfterPoint, &builder));
CHECK_EQ("0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
builder.Finalize());
builder.Reset();
CHECK(dc.ToFixed(
9e59, DoubleToStringConverter::kMaxFixedDigitsAfterPoint, &builder));
CHECK_EQ("899999999999999918767229449717619953810131273674690656206848."
"0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
builder.Finalize());
builder.Reset();
CHECK(dc.ToFixed(
-9e59, DoubleToStringConverter::kMaxFixedDigitsAfterPoint, &builder));
CHECK_EQ("-899999999999999918767229449717619953810131273674690656206848."
"0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
builder.Finalize());
builder.Reset();
CHECK(dc.ToFixed(
1e-100, DoubleToStringConverter::kMaxFixedDigitsAfterPoint, &builder));
CHECK_EQ("0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001",
builder.Finalize());
builder.Reset();
CHECK(dc.ToFixed(0.3000000000000000444089209850062616169452667236328125,
DoubleToStringConverter::kMaxFixedDigitsAfterPoint,
&builder));
CHECK_EQ("0.3000000000000000444089209850062616169452667236328125000000000000000000000000000000000000000000000000",
builder.Finalize());
builder.Reset();
CHECK(dc.ToFixed(1.5e-100,
DoubleToStringConverter::kMaxFixedDigitsAfterPoint,
&builder));
CHECK_EQ("0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002",
builder.Finalize());
builder.Reset();
CHECK(dc.ToFixed(1.15e-99, // In reality: 1.14999999999999992147301128036734...
DoubleToStringConverter::kMaxFixedDigitsAfterPoint,
&builder));
CHECK_EQ("0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000011",
builder.Finalize());
builder.Reset();
CHECK(dc.ToFixed(3.141592653589793,
DoubleToStringConverter::kMaxFixedDigitsAfterPoint,
&builder));
CHECK_EQ("3.1415926535897931159979634685441851615905761718750000000000000000000000000000000000000000000000000000",
builder.Finalize());
builder.Reset();
CHECK(dc.ToFixed(1.0,
DoubleToStringConverter::kMaxFixedDigitsAfterPoint,
&builder));
CHECK_EQ("1.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
builder.Finalize());
builder.Reset();
CHECK(dc.ToFixed(-123456.78,
DoubleToStringConverter::kMaxFixedDigitsAfterPoint,
&builder));
CHECK_EQ("-123456.7799999999988358467817306518554687500000000000000000000000000000000000000000000000000000000000000000",
builder.Finalize());
builder.Reset();
CHECK(dc.ToFixed(123456.78,
DoubleToStringConverter::kMaxFixedDigitsAfterPoint,
&builder));
CHECK_EQ("123456.7799999999988358467817306518554687500000000000000000000000000000000000000000000000000000000000000000",
builder.Finalize());
builder.Reset();
CHECK(dc.ToFixed(100000000000000000000.0,
DoubleToStringConverter::kMaxFixedDigitsAfterPoint,
&builder));
CHECK_EQ("100000000000000000000.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
builder.Finalize());
builder.Reset();
CHECK(dc.ToFixed(-100000000000000000000.0,
DoubleToStringConverter::kMaxFixedDigitsAfterPoint,
&builder));
CHECK_EQ("-100000000000000000000.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
builder.Finalize());
builder.Reset();
CHECK(!dc.ToFixed(
1e60, DoubleToStringConverter::kMaxFixedDigitsAfterPoint, &builder));
CHECK_EQ(0, builder.position());
builder.Reset();
CHECK(!dc.ToFixed(
9e59, DoubleToStringConverter::kMaxFixedDigitsAfterPoint + 1, &builder));
CHECK_EQ(0, builder.position());
builder.Reset();
CHECK(dc.ToFixed(3.0, 0, &builder));
CHECK_EQ("3", builder.Finalize());
builder.Reset();
CHECK(dc.ToFixed(3.23, 1, &builder));
CHECK_EQ("3.2", builder.Finalize());
builder.Reset();
CHECK(dc.ToFixed(3.23, 3, &builder));
CHECK_EQ("3.230", builder.Finalize());
builder.Reset();
CHECK(dc.ToFixed(0.0323, 2, &builder));
CHECK_EQ("0.03", builder.Finalize());
builder.Reset();
CHECK(dc.ToFixed(0.0373, 2, &builder));
CHECK_EQ("0.04", builder.Finalize());
builder.Reset();
CHECK(dc.ToFixed(0.0000373, 2, &builder));
CHECK_EQ("0.00", builder.Finalize());
builder.Reset();
CHECK(dc.ToFixed(1.5, 0, &builder));
CHECK_EQ("2", builder.Finalize());
builder.Reset();
CHECK(dc.ToFixed(2.5, 0, &builder));
CHECK_EQ("3", builder.Finalize());
builder.Reset();
CHECK(dc.ToFixed(3.5, 0, &builder));
CHECK_EQ("4", builder.Finalize());
builder.Reset();
CHECK(dc.ToFixed(0.15, 1, &builder));
CHECK_EQ("0.1", builder.Finalize());
builder.Reset();
CHECK(dc.ToFixed(0.25, 1, &builder));
CHECK_EQ("0.3", builder.Finalize());
builder.Reset();
CHECK(dc.ToFixed(0.35, 1, &builder));
CHECK_EQ("0.3", builder.Finalize());
builder.Reset();
CHECK(dc.ToFixed(0.45, 1, &builder));
CHECK_EQ("0.5", builder.Finalize());
builder.Reset();
CHECK(dc.ToFixed(0.55, 1, &builder));
CHECK_EQ("0.6", builder.Finalize());
// Test positive/negative zeroes.
int flags2 = DoubleToStringConverter::EMIT_POSITIVE_EXPONENT_SIGN;
DoubleToStringConverter dc2(flags2, "Infinity", "NaN", 'e',
0, 0, 0, 0); // Padding zeroes.
builder.Reset();
CHECK(dc2.ToFixed(0.0, 1, &builder));
CHECK_EQ("0.0", builder.Finalize());
builder.Reset();
CHECK(dc2.ToFixed(-0.0, 1, &builder));
CHECK_EQ("-0.0", builder.Finalize());
// Verify the trailing dot is emitted.
int flags3 = DoubleToStringConverter::EMIT_POSITIVE_EXPONENT_SIGN |
DoubleToStringConverter::EMIT_TRAILING_DECIMAL_POINT;
DoubleToStringConverter dc3(flags3, "Infinity", "NaN", 'e',
0, 0, 0, 0); // Padding zeroes.
builder.Reset();
CHECK(dc3.ToFixed(0.0, 0, &builder));
CHECK_EQ("0.", builder.Finalize());
builder.Reset();
CHECK(dc3.ToFixed(-0.0, 0, &builder));
CHECK_EQ("-0.", builder.Finalize());
builder.Reset();
CHECK(dc3.ToFixed(1.0, 0, &builder));
CHECK_EQ("1.", builder.Finalize());
builder.Reset();
CHECK(dc3.ToFixed(-1.0, 0, &builder));
CHECK_EQ("-1.", builder.Finalize());
// Verify no trailing zero is emitted, even if the configuration is set.
// The given parameter takes precedence.
int flags4 = DoubleToStringConverter::EMIT_POSITIVE_EXPONENT_SIGN |
DoubleToStringConverter::EMIT_TRAILING_DECIMAL_POINT |
DoubleToStringConverter::EMIT_TRAILING_ZERO_AFTER_POINT;
DoubleToStringConverter dc4(flags4, "Infinity", "NaN", 'e',
0, 0, 0, 0); // Padding zeroes.
builder.Reset();
CHECK(dc4.ToFixed(0.0, 0, &builder));
CHECK_EQ("0.0", builder.Finalize());
builder.Reset();
CHECK(dc4.ToFixed(-0.0, 0, &builder));
CHECK_EQ("-0.0", builder.Finalize());
builder.Reset();
CHECK(dc4.ToFixed(1.0, 0, &builder));
CHECK_EQ("1.0", builder.Finalize());
builder.Reset();
CHECK(dc4.ToFixed(-1.0, 0, &builder));
CHECK_EQ("-1.0", builder.Finalize());
// Test the examples in the comments of ToFixed.
flags = DoubleToStringConverter::NO_FLAGS;
DoubleToStringConverter dc5(flags, NULL, NULL, 'e', 0, 0, 0, 0);
builder.Reset();
CHECK(dc5.ToFixed(3.12, 1, &builder));
CHECK_EQ("3.1", builder.Finalize());
builder.Reset();
CHECK(dc5.ToFixed(3.1415, 3, &builder));
CHECK_EQ("3.142", builder.Finalize());
builder.Reset();
CHECK(dc5.ToFixed(1234.56789, 4, &builder));
CHECK_EQ("1234.5679", builder.Finalize());
builder.Reset();
CHECK(dc5.ToFixed(1.23, 5, &builder));
CHECK_EQ("1.23000", builder.Finalize());
builder.Reset();
CHECK(dc5.ToFixed(0.1, 4, &builder));
CHECK_EQ("0.1000", builder.Finalize());
builder.Reset();
CHECK(dc5.ToFixed(1e30, 2, &builder));
CHECK_EQ("1000000000000000019884624838656.00", builder.Finalize());
builder.Reset();
CHECK(dc5.ToFixed(0.1, 30, &builder));
CHECK_EQ("0.100000000000000005551115123126", builder.Finalize());
builder.Reset();
CHECK(dc5.ToFixed(0.1, 100, &builder));
CHECK_EQ("0.1000000000000000055511151231257827021181583404541015625000000000000000000000000000000000000000000000", builder.Finalize());
builder.Reset();
CHECK(dc5.ToFixed(0.1, 17, &builder));
CHECK_EQ("0.10000000000000001", builder.Finalize());
builder.Reset();
CHECK(dc5.ToFixed(123.45, 0, &builder));
CHECK_EQ("123", builder.Finalize());
builder.Reset();
CHECK(dc5.ToFixed(0.678, 0, &builder));
CHECK_EQ("1", builder.Finalize());
flags = DoubleToStringConverter::EMIT_TRAILING_DECIMAL_POINT;
DoubleToStringConverter dc6(flags, NULL, NULL, 'e', 0, 0, 0, 0);
builder.Reset();
CHECK(dc6.ToFixed(123.45, 0, &builder));
CHECK_EQ("123.", builder.Finalize());
builder.Reset();
CHECK(dc6.ToFixed(0.678, 0, &builder));
CHECK_EQ("1.", builder.Finalize());
flags = DoubleToStringConverter::EMIT_TRAILING_DECIMAL_POINT |
DoubleToStringConverter::EMIT_TRAILING_ZERO_AFTER_POINT;
DoubleToStringConverter dc7(flags, NULL, NULL, 'e', 0, 0, 0, 0);
builder.Reset();
CHECK(dc7.ToFixed(123.45, 0, &builder));
CHECK_EQ("123.0", builder.Finalize());
builder.Reset();
CHECK(dc7.ToFixed(0.678, 0, &builder));
CHECK_EQ("1.0", builder.Finalize());
// Test special value handling.
DoubleToStringConverter dc8(flags, NULL, NULL, 'e', 0, 0, 0, 0);
builder.Reset();
CHECK(!dc8.ToFixed(Double::Infinity(), 1, &builder));
builder.Reset();
CHECK(!dc8.ToFixed(-Double::Infinity(), 1, &builder));
builder.Reset();
CHECK(!dc8.ToFixed(Double::NaN(), 1, &builder));
builder.Reset();
CHECK(!dc8.ToFixed(-Double::NaN(), 1, &builder));
DoubleToStringConverter dc9(flags, "Infinity", "NaN", 'e', 0, 0, 0, 0);
builder.Reset();
CHECK(dc9.ToFixed(Double::Infinity(), 1, &builder));
CHECK_EQ("Infinity", builder.Finalize());
builder.Reset();
CHECK(dc9.ToFixed(-Double::Infinity(), 1, &builder));
CHECK_EQ("-Infinity", builder.Finalize());
builder.Reset();
CHECK(dc9.ToFixed(Double::NaN(), 1, &builder));
CHECK_EQ("NaN", builder.Finalize());
builder.Reset();
CHECK(dc9.ToFixed(-Double::NaN(), 1, &builder));
CHECK_EQ("NaN", builder.Finalize());
}
TEST(DoubleToExponential) {
const int kBufferSize = 256;
char buffer[kBufferSize];
int flags = DoubleToStringConverter::EMIT_POSITIVE_EXPONENT_SIGN |
DoubleToStringConverter::UNIQUE_ZERO;
StringBuilder builder(buffer, kBufferSize);
DoubleToStringConverter dc(flags, "Infinity", "NaN", 'e', 0, 0, 0, 0);
builder.Reset();
CHECK(dc.ToExponential(0.0, 5, &builder));
CHECK_EQ("0.00000e+0", builder.Finalize());
builder.Reset();
CHECK(dc.ToExponential(0.0, 0, &builder));
CHECK_EQ("0e+0", builder.Finalize());
builder.Reset();
CHECK(dc.ToExponential(0.0, 1, &builder));
CHECK_EQ("0.0e+0", builder.Finalize());
builder.Reset();
CHECK(dc.ToExponential(0.123456, 5, &builder));
CHECK_EQ("1.23456e-1", builder.Finalize());
builder.Reset();
CHECK(dc.ToExponential(1.2, 1, &builder));
CHECK_EQ("1.2e+0", builder.Finalize());
builder.Reset();
CHECK(dc.ToExponential(-0.0, 1, &builder));
CHECK_EQ("0.0e+0", builder.Finalize());
builder.Reset();
CHECK(dc.ToExponential(0.0, 2, &builder));
CHECK_EQ("0.00e+0", builder.Finalize());
builder.Reset();
CHECK(dc.ToExponential(-0.0, 2, &builder));
CHECK_EQ("0.00e+0", builder.Finalize());
DOUBLE_CONVERSION_ASSERT(DoubleToStringConverter::kMaxExponentialDigits == 120);
builder.Reset();
CHECK(dc.ToExponential(
0.0, DoubleToStringConverter::kMaxExponentialDigits, &builder));
CHECK_EQ("0.00000000000000000000000000000000000000000000000000000000000"
"0000000000000000000000000000000000000000000000000000000000000e+0",
builder.Finalize());
builder.Reset();
CHECK(dc.ToExponential(
9e59, DoubleToStringConverter::kMaxExponentialDigits, &builder));
CHECK_EQ("8.99999999999999918767229449717619953810131273674690656206848"
"0000000000000000000000000000000000000000000000000000000000000e+59",
builder.Finalize());
builder.Reset();
CHECK(dc.ToExponential(
-9e59, DoubleToStringConverter::kMaxExponentialDigits, &builder));
CHECK_EQ("-8.99999999999999918767229449717619953810131273674690656206848"
"0000000000000000000000000000000000000000000000000000000000000e+59",
builder.Finalize());
const double max_double = 1.7976931348623157e308;
builder.Reset();
CHECK(dc.ToExponential(
max_double, DoubleToStringConverter::kMaxExponentialDigits, &builder));
CHECK_EQ("1.79769313486231570814527423731704356798070567525844996598917"
"4768031572607800285387605895586327668781715404589535143824642e+308",
builder.Finalize());
builder.Reset();
CHECK(dc.ToExponential(0.000001, 2, &builder));
CHECK_EQ("1.00e-6", builder.Finalize());
builder.Reset();
CHECK(dc.ToExponential(0.0000001, 2, &builder));
CHECK_EQ("1.00e-7", builder.Finalize());
// Test the examples in the comments of ToExponential.
flags = DoubleToStringConverter::NO_FLAGS;
DoubleToStringConverter dc2(flags, "Infinity", "NaN", 'e', 0, 0, 0, 0);
builder.Reset();
CHECK(dc2.ToExponential(3.12, 1, &builder));
CHECK_EQ("3.1e0", builder.Finalize());
builder.Reset();
CHECK(dc2.ToExponential(5.0, 3, &builder));
CHECK_EQ("5.000e0", builder.Finalize());
builder.Reset();
CHECK(dc2.ToExponential(0.001, 2, &builder));
CHECK_EQ("1.00e-3", builder.Finalize());
builder.Reset();
CHECK(dc2.ToExponential(3.1415, -1, &builder));
CHECK_EQ("3.1415e0", builder.Finalize());
builder.Reset();
CHECK(dc2.ToExponential(3.1415, 4, &builder));
CHECK_EQ("3.1415e0", builder.Finalize());
builder.Reset();
CHECK(dc2.ToExponential(3.1415, 3, &builder));
CHECK_EQ("3.142e0", builder.Finalize());
builder.Reset();
CHECK(dc2.ToExponential(123456789000000, 3, &builder));
CHECK_EQ("1.235e14", builder.Finalize());
builder.Reset();
CHECK(dc2.ToExponential(1000000000000000019884624838656.0, -1, &builder));
CHECK_EQ("1e30", builder.Finalize());
builder.Reset();
CHECK(dc2.ToExponential(1000000000000000019884624838656.0, 32, &builder));
CHECK_EQ("1.00000000000000001988462483865600e30", builder.Finalize());
builder.Reset();
CHECK(dc2.ToExponential(1234, 0, &builder));
CHECK_EQ("1e3", builder.Finalize());
// Test special value handling.
DoubleToStringConverter dc3(flags, NULL, NULL, 'e', 0, 0, 0, 0);
builder.Reset();
CHECK(!dc3.ToExponential(Double::Infinity(), 1, &builder));
builder.Reset();
CHECK(!dc3.ToExponential(-Double::Infinity(), 1, &builder));
builder.Reset();
CHECK(!dc3.ToExponential(Double::NaN(), 1, &builder));
builder.Reset();
CHECK(!dc3.ToExponential(-Double::NaN(), 1, &builder));
DoubleToStringConverter dc4(flags, "Infinity", "NaN", 'e', 0, 0, 0, 0);
builder.Reset();
CHECK(dc4.ToExponential(Double::Infinity(), 1, &builder));
CHECK_EQ("Infinity", builder.Finalize());
builder.Reset();
CHECK(dc4.ToExponential(-Double::Infinity(), 1, &builder));
CHECK_EQ("-Infinity", builder.Finalize());
builder.Reset();
CHECK(dc4.ToExponential(Double::NaN(), 1, &builder));
CHECK_EQ("NaN", builder.Finalize());
builder.Reset();
CHECK(dc4.ToExponential(-Double::NaN(), 1, &builder));
CHECK_EQ("NaN", builder.Finalize());
// Test min_exponent_width
DoubleToStringConverter dc5(flags, NULL, NULL, 'e', 0, 0, 0, 0, 2);
builder.Reset();
CHECK(dc5.ToExponential(11111111111.0, 6, &builder));
CHECK_EQ("1.111111e10", builder.Finalize());
builder.Reset();
CHECK(dc5.ToExponential(1111111111.0, 6, &builder));
CHECK_EQ("1.111111e09", builder.Finalize());
builder.Reset();
CHECK(dc5.ToExponential(1111111.0, 6, &builder));
CHECK_EQ("1.111111e06", builder.Finalize());
builder.Reset();
CHECK(dc5.ToExponential(10000000000.0, 6, &builder));
CHECK_EQ("1.000000e10", builder.Finalize());
builder.Reset();
CHECK(dc5.ToExponential(1000000000.0, 6, &builder));
CHECK_EQ("1.000000e09", builder.Finalize());
builder.Reset();
CHECK(dc5.ToExponential(1.0, 6, &builder));
CHECK_EQ("1.000000e00", builder.Finalize());
}
TEST(DoubleToPrecision) {
const int kBufferSize = 256;
char buffer[kBufferSize];
int flags = DoubleToStringConverter::EMIT_POSITIVE_EXPONENT_SIGN |