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fix: rename fp_to_string to FpToString to match coding style

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This commit is contained in:
Simon Gene Gottlieb
2024-07-16 13:38:25 +02:00
committed by Jesse Beder
parent bd070a7b76
commit d4e00bd473
4 changed files with 182 additions and 182 deletions
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2
include/yaml-cpp/emitter.h
View File

@@ -181,7 +181,7 @@ inline Emitter& Emitter::WriteStreamable(T value) {
}
if (!special) {
stream << fp_to_string(value, stream.precision());
stream << FpToString(value, stream.precision());
}
m_stream << stream.str();

20
include/yaml-cpp/fp_to_string.h
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@@ -26,13 +26,13 @@ namespace fp_formatting {
*
* Example:
* std::array<char, 20> buffer;
* auto ct = convertToChars(buffer.begin(), buffer.end(), 23, 3);
* auto ct = ConvertToChars(buffer.begin(), buffer.end(), 23, 3);
* assert(ct = 3);
* assert(buffer[0] == '0');
* assert(buffer[1] == '2');
* assert(buffer[2] == '3');
*/
inline auto convertToChars(char* begin, char* end, size_t value, int width=1) -> int {
inline auto ConvertToChars(char* begin, char* end, size_t value, int width=1) -> int {
assert(width >= 1);
assert(end >= begin); // end must be after begin
assert(end-begin >= width); // Buffer must be large enough
@@ -62,7 +62,7 @@ inline auto convertToChars(char* begin, char* end, size_t value, int width=1) ->
* converts a value 'v' to a string. Uses dragonbox for formatting.
*/
template <typename T>
auto fp_to_string(T v, int precision = 0) -> std::string {
auto FpToString(T v, int precision = 0) -> std::string {
// assert(precision > 0);
// hardcoded constant, at which exponent should switch to a scientific notation
int const lowerExponentThreshold = -5;
@@ -81,7 +81,7 @@ auto fp_to_string(T v, int precision = 0) -> std::string {
auto r = jkj::dragonbox::to_decimal(v);
auto digits = std::array<char, 20>{}; // max digits of size_t is 20.
auto digits_ct = convertToChars(digits.data(), digits.data() + digits.size(), r.significand);
auto digits_ct = ConvertToChars(digits.data(), digits.data() + digits.size(), r.significand);
// check if requested precision is lower than
// required digits for exact representation
@@ -136,7 +136,7 @@ auto fp_to_string(T v, int precision = 0) -> std::string {
*(output_ptr++) = 'e';
*(output_ptr++) = (exponent>=0)?'+':'-';
auto exp_digits = std::array<char, 20>{};
auto exp_digits_ct = convertToChars(exp_digits.data(), exp_digits.data() + exp_digits.size(), std::abs(exponent), /*.precision=*/ 2);
auto exp_digits_ct = ConvertToChars(exp_digits.data(), exp_digits.data() + exp_digits.size(), std::abs(exponent), /*.precision=*/ 2);
for (int i{0}; i < exp_digits_ct; ++i) {
*(output_ptr++) = exp_digits[i];
}
@@ -184,18 +184,18 @@ auto fp_to_string(T v, int precision = 0) -> std::string {
}
}
inline auto fp_to_string(float v, size_t precision = 0) -> std::string {
return detail::fp_formatting::fp_to_string(v, precision);
inline auto FpToString(float v, size_t precision = 0) -> std::string {
return detail::fp_formatting::FpToString(v, precision);
}
inline auto fp_to_string(double v, size_t precision = 0) -> std::string {
return detail::fp_formatting::fp_to_string(v, precision);
inline auto FpToString(double v, size_t precision = 0) -> std::string {
return detail::fp_formatting::FpToString(v, precision);
}
/**
* dragonbox only works for floats/doubles not long double
*/
inline auto fp_to_string(long double v, size_t precision = std::numeric_limits<long double>::max_digits10) -> std::string {
inline auto FpToString(long double v, size_t precision = std::numeric_limits<long double>::max_digits10) -> std::string {
std::stringstream ss;
ss.precision(precision);
ss.imbue(std::locale("C"));

2
include/yaml-cpp/node/convert.h
View File

@@ -130,7 +130,7 @@ inner_encode(const T& rhs, std::stringstream& stream){
stream << ".inf";
}
} else {
stream << fp_to_string(rhs, stream.precision());
stream << FpToString(rhs, stream.precision());
}
}

340
test/fp_to_string_test.cpp
View File

@@ -19,223 +19,223 @@ static std::string convert_with_stringstream(T v, size_t precision = 0) {
// Caution: Test involving 'convert_with_stringstream' are based on std::stringstream
// having certain printing behavior, if these changes, the unit test might fail.
// This is not a fault of fp_to_string just a weakness of the way these
// This is not a fault of FpToString just a weakness of the way these
// tests are constructed
TEST(FpToStringTest, conversion_double) {
// Issue motivating fp_to_string function,
// Issue motivating FpToString function,
// https://github.com/jbeder/yaml-cpp/issues/1289
// Original problem at hand:
EXPECT_EQ("34.34", fp_to_string(34.34));
EXPECT_EQ("56.56", fp_to_string(56.56));
EXPECT_EQ("12.12", fp_to_string(12.12));
EXPECT_EQ("78.78", fp_to_string(78.78));
EXPECT_EQ("34.34", FpToString(34.34));
EXPECT_EQ("56.56", FpToString(56.56));
EXPECT_EQ("12.12", FpToString(12.12));
EXPECT_EQ("78.78", FpToString(78.78));
// Special challenge with rounding
// https://github.com/jbeder/yaml-cpp/issues/1289#issuecomment-2211705536
EXPECT_EQ("1.54743e+26", fp_to_string(1.5474250491e+26f));
EXPECT_EQ(convert_with_stringstream(1.5474250491e+26f), fp_to_string(1.5474250491e+26f));
EXPECT_EQ("1.5474251e+26", fp_to_string(1.5474250491e+26f, 8));
EXPECT_EQ("1.54743e+26", FpToString(1.5474250491e+26f));
EXPECT_EQ(convert_with_stringstream(1.5474250491e+26f), FpToString(1.5474250491e+26f));
EXPECT_EQ("1.5474251e+26", FpToString(1.5474250491e+26f, 8));
// prints the same way as std::stringstream
EXPECT_EQ(convert_with_stringstream(1.), fp_to_string(1.));
EXPECT_EQ(convert_with_stringstream(1e0), fp_to_string(1e0));
EXPECT_EQ(convert_with_stringstream(1e1), fp_to_string(1e1));
EXPECT_EQ(convert_with_stringstream(1e2), fp_to_string(1e2));
EXPECT_EQ(convert_with_stringstream(1e3), fp_to_string(1e3));
EXPECT_EQ(convert_with_stringstream(1e4), fp_to_string(1e4));
EXPECT_EQ(convert_with_stringstream(1e5), fp_to_string(1e5));
EXPECT_EQ(convert_with_stringstream(1e6), fp_to_string(1e6));
EXPECT_EQ(convert_with_stringstream(1e7), fp_to_string(1e7));
EXPECT_EQ(convert_with_stringstream(1e8), fp_to_string(1e8));
EXPECT_EQ(convert_with_stringstream(1e9), fp_to_string(1e9));
EXPECT_EQ(convert_with_stringstream(1.), FpToString(1.));
EXPECT_EQ(convert_with_stringstream(1e0), FpToString(1e0));
EXPECT_EQ(convert_with_stringstream(1e1), FpToString(1e1));
EXPECT_EQ(convert_with_stringstream(1e2), FpToString(1e2));
EXPECT_EQ(convert_with_stringstream(1e3), FpToString(1e3));
EXPECT_EQ(convert_with_stringstream(1e4), FpToString(1e4));
EXPECT_EQ(convert_with_stringstream(1e5), FpToString(1e5));
EXPECT_EQ(convert_with_stringstream(1e6), FpToString(1e6));
EXPECT_EQ(convert_with_stringstream(1e7), FpToString(1e7));
EXPECT_EQ(convert_with_stringstream(1e8), FpToString(1e8));
EXPECT_EQ(convert_with_stringstream(1e9), FpToString(1e9));
// Print by default values below 1e6 without scientific notation
EXPECT_EQ("1", fp_to_string(1.));
EXPECT_EQ("1", fp_to_string(1e0));
EXPECT_EQ("10", fp_to_string(1e1));
EXPECT_EQ("100", fp_to_string(1e2));
EXPECT_EQ("1000", fp_to_string(1e3));
EXPECT_EQ("10000", fp_to_string(1e4));
EXPECT_EQ("100000", fp_to_string(1e5));
EXPECT_EQ("1e+06", fp_to_string(1e6));
EXPECT_EQ("1e+07", fp_to_string(1e7));
EXPECT_EQ("1e+08", fp_to_string(1e8));
EXPECT_EQ("1e+09", fp_to_string(1e9));
EXPECT_EQ("1", FpToString(1.));
EXPECT_EQ("1", FpToString(1e0));
EXPECT_EQ("10", FpToString(1e1));
EXPECT_EQ("100", FpToString(1e2));
EXPECT_EQ("1000", FpToString(1e3));
EXPECT_EQ("10000", FpToString(1e4));
EXPECT_EQ("100000", FpToString(1e5));
EXPECT_EQ("1e+06", FpToString(1e6));
EXPECT_EQ("1e+07", FpToString(1e7));
EXPECT_EQ("1e+08", FpToString(1e8));
EXPECT_EQ("1e+09", FpToString(1e9));
// prints the same way as std::stringstream
EXPECT_EQ(convert_with_stringstream(1.), fp_to_string(1.));
EXPECT_EQ(convert_with_stringstream(1e-0), fp_to_string(1e-0));
EXPECT_EQ(convert_with_stringstream(1e-1), fp_to_string(1e-1));
EXPECT_EQ(convert_with_stringstream(1e-2), fp_to_string(1e-2));
EXPECT_EQ(convert_with_stringstream(1e-3), fp_to_string(1e-3));
EXPECT_EQ(convert_with_stringstream(1e-4), fp_to_string(1e-4));
EXPECT_EQ(convert_with_stringstream(1e-5), fp_to_string(1e-5));
EXPECT_EQ(convert_with_stringstream(1e-6), fp_to_string(1e-6));
EXPECT_EQ(convert_with_stringstream(1e-7), fp_to_string(1e-7));
EXPECT_EQ(convert_with_stringstream(1e-8), fp_to_string(1e-8));
EXPECT_EQ(convert_with_stringstream(1e-9), fp_to_string(1e-9));
EXPECT_EQ(convert_with_stringstream(1.), FpToString(1.));
EXPECT_EQ(convert_with_stringstream(1e-0), FpToString(1e-0));
EXPECT_EQ(convert_with_stringstream(1e-1), FpToString(1e-1));
EXPECT_EQ(convert_with_stringstream(1e-2), FpToString(1e-2));
EXPECT_EQ(convert_with_stringstream(1e-3), FpToString(1e-3));
EXPECT_EQ(convert_with_stringstream(1e-4), FpToString(1e-4));
EXPECT_EQ(convert_with_stringstream(1e-5), FpToString(1e-5));
EXPECT_EQ(convert_with_stringstream(1e-6), FpToString(1e-6));
EXPECT_EQ(convert_with_stringstream(1e-7), FpToString(1e-7));
EXPECT_EQ(convert_with_stringstream(1e-8), FpToString(1e-8));
EXPECT_EQ(convert_with_stringstream(1e-9), FpToString(1e-9));
// Print by default values above 1e-5 without scientific notation
EXPECT_EQ("1", fp_to_string(1.));
EXPECT_EQ("1", fp_to_string(1e-0));
EXPECT_EQ("0.1", fp_to_string(1e-1));
EXPECT_EQ("0.01", fp_to_string(1e-2));
EXPECT_EQ("0.001", fp_to_string(1e-3));
EXPECT_EQ("0.0001", fp_to_string(1e-4));
EXPECT_EQ("1e-05", fp_to_string(1e-5));
EXPECT_EQ("1e-06", fp_to_string(1e-6));
EXPECT_EQ("1e-07", fp_to_string(1e-7));
EXPECT_EQ("1e-08", fp_to_string(1e-8));
EXPECT_EQ("1e-09", fp_to_string(1e-9));
EXPECT_EQ("1", FpToString(1.));
EXPECT_EQ("1", FpToString(1e-0));
EXPECT_EQ("0.1", FpToString(1e-1));
EXPECT_EQ("0.01", FpToString(1e-2));
EXPECT_EQ("0.001", FpToString(1e-3));
EXPECT_EQ("0.0001", FpToString(1e-4));
EXPECT_EQ("1e-05", FpToString(1e-5));
EXPECT_EQ("1e-06", FpToString(1e-6));
EXPECT_EQ("1e-07", FpToString(1e-7));
EXPECT_EQ("1e-08", FpToString(1e-8));
EXPECT_EQ("1e-09", FpToString(1e-9));
// changing precision has the same effect as std::stringstream
EXPECT_EQ(convert_with_stringstream(123., 1), fp_to_string(123., 1));
EXPECT_EQ(convert_with_stringstream(1234567., 7), fp_to_string(1234567., 7));
EXPECT_EQ(convert_with_stringstream(12345.67, 7), fp_to_string(12345.67, 7));
EXPECT_EQ(convert_with_stringstream(1234567e-9, 7), fp_to_string(1234567e-9, 7));
EXPECT_EQ(convert_with_stringstream(1234567e-9, 1), fp_to_string(1234567e-9, 1));
EXPECT_EQ(convert_with_stringstream(123., 1), FpToString(123., 1));
EXPECT_EQ(convert_with_stringstream(1234567., 7), FpToString(1234567., 7));
EXPECT_EQ(convert_with_stringstream(12345.67, 7), FpToString(12345.67, 7));
EXPECT_EQ(convert_with_stringstream(1234567e-9, 7), FpToString(1234567e-9, 7));
EXPECT_EQ(convert_with_stringstream(1234567e-9, 1), FpToString(1234567e-9, 1));
// known example that is difficult to round
EXPECT_EQ("1", fp_to_string(0.9999, 2));
EXPECT_EQ("-1", fp_to_string(-0.9999, 2));
EXPECT_EQ("1", FpToString(0.9999, 2));
EXPECT_EQ("-1", FpToString(-0.9999, 2));
// some more random tests
EXPECT_EQ("1.25", fp_to_string(1.25));
EXPECT_EQ("34.34", fp_to_string(34.34));
EXPECT_EQ("1e+20", fp_to_string(1e+20));
EXPECT_EQ("1.1e+20", fp_to_string(1.1e+20));
EXPECT_EQ("1e-20", fp_to_string(1e-20));
EXPECT_EQ("1.1e-20", fp_to_string(1.1e-20));
EXPECT_EQ("1e-20", fp_to_string(0.1e-19));
EXPECT_EQ("1.1e-20", fp_to_string(0.11e-19));
EXPECT_EQ("1.25", FpToString(1.25));
EXPECT_EQ("34.34", FpToString(34.34));
EXPECT_EQ("1e+20", FpToString(1e+20));
EXPECT_EQ("1.1e+20", FpToString(1.1e+20));
EXPECT_EQ("1e-20", FpToString(1e-20));
EXPECT_EQ("1.1e-20", FpToString(1.1e-20));
EXPECT_EQ("1e-20", FpToString(0.1e-19));
EXPECT_EQ("1.1e-20", FpToString(0.11e-19));
EXPECT_EQ("19", fp_to_string(18.9, 2));
EXPECT_EQ("20", fp_to_string(19.9, 2));
EXPECT_EQ("2e+01", fp_to_string(19.9, 1));
EXPECT_EQ("1.2e-05", fp_to_string(1.234e-5, 2));
EXPECT_EQ("1.3e-05", fp_to_string(1.299e-5, 2));
EXPECT_EQ("19", FpToString(18.9, 2));
EXPECT_EQ("20", FpToString(19.9, 2));
EXPECT_EQ("2e+01", FpToString(19.9, 1));
EXPECT_EQ("1.2e-05", FpToString(1.234e-5, 2));
EXPECT_EQ("1.3e-05", FpToString(1.299e-5, 2));
EXPECT_EQ("-1", fp_to_string(-1.));
EXPECT_EQ("-1.25", fp_to_string(-1.25));
EXPECT_EQ("-34.34", fp_to_string(-34.34));
EXPECT_EQ("-1e+20", fp_to_string(-1e+20));
EXPECT_EQ("-1.1e+20", fp_to_string(-1.1e+20));
EXPECT_EQ("-1e-20", fp_to_string(-1e-20));
EXPECT_EQ("-1.1e-20", fp_to_string(-1.1e-20));
EXPECT_EQ("-1e-20", fp_to_string(-0.1e-19));
EXPECT_EQ("-1.1e-20", fp_to_string(-0.11e-19));
EXPECT_EQ("-1", FpToString(-1.));
EXPECT_EQ("-1.25", FpToString(-1.25));
EXPECT_EQ("-34.34", FpToString(-34.34));
EXPECT_EQ("-1e+20", FpToString(-1e+20));
EXPECT_EQ("-1.1e+20", FpToString(-1.1e+20));
EXPECT_EQ("-1e-20", FpToString(-1e-20));
EXPECT_EQ("-1.1e-20", FpToString(-1.1e-20));
EXPECT_EQ("-1e-20", FpToString(-0.1e-19));
EXPECT_EQ("-1.1e-20", FpToString(-0.11e-19));
EXPECT_EQ("-19", fp_to_string(-18.9, 2));
EXPECT_EQ("-20", fp_to_string(-19.9, 2));
EXPECT_EQ("-2e+01", fp_to_string(-19.9, 1));
EXPECT_EQ("-1.2e-05", fp_to_string(-1.234e-5, 2));
EXPECT_EQ("-1.3e-05", fp_to_string(-1.299e-5, 2));
EXPECT_EQ("-19", FpToString(-18.9, 2));
EXPECT_EQ("-20", FpToString(-19.9, 2));
EXPECT_EQ("-2e+01", FpToString(-19.9, 1));
EXPECT_EQ("-1.2e-05", FpToString(-1.234e-5, 2));
EXPECT_EQ("-1.3e-05", FpToString(-1.299e-5, 2));
}
TEST(FpToStringTest, conversion_float) {
// Issue motivating fp_to_string function,
// Issue motivating FpToString function,
// https://github.com/jbeder/yaml-cpp/issues/1289
// Original problem at hand:
EXPECT_EQ("34.34", fp_to_string(34.34f));
EXPECT_EQ("56.56", fp_to_string(56.56f));
EXPECT_EQ("12.12", fp_to_string(12.12f));
EXPECT_EQ("78.78", fp_to_string(78.78f));
EXPECT_EQ("34.34", FpToString(34.34f));
EXPECT_EQ("56.56", FpToString(56.56f));
EXPECT_EQ("12.12", FpToString(12.12f));
EXPECT_EQ("78.78", FpToString(78.78f));
// prints the same way as std::stringstream
EXPECT_EQ(convert_with_stringstream(1.f), fp_to_string(1.f));
EXPECT_EQ(convert_with_stringstream(1e0f), fp_to_string(1e0f));
EXPECT_EQ(convert_with_stringstream(1e1f), fp_to_string(1e1f));
EXPECT_EQ(convert_with_stringstream(1e2f), fp_to_string(1e2f));
EXPECT_EQ(convert_with_stringstream(1e3f), fp_to_string(1e3f));
EXPECT_EQ(convert_with_stringstream(1e4f), fp_to_string(1e4f));
EXPECT_EQ(convert_with_stringstream(1e5f), fp_to_string(1e5f));
EXPECT_EQ(convert_with_stringstream(1e6f), fp_to_string(1e6f));
EXPECT_EQ(convert_with_stringstream(1e7f), fp_to_string(1e7f));
EXPECT_EQ(convert_with_stringstream(1e8f), fp_to_string(1e8f));
EXPECT_EQ(convert_with_stringstream(1e9f), fp_to_string(1e9f));
EXPECT_EQ(convert_with_stringstream(1.f), FpToString(1.f));
EXPECT_EQ(convert_with_stringstream(1e0f), FpToString(1e0f));
EXPECT_EQ(convert_with_stringstream(1e1f), FpToString(1e1f));
EXPECT_EQ(convert_with_stringstream(1e2f), FpToString(1e2f));
EXPECT_EQ(convert_with_stringstream(1e3f), FpToString(1e3f));
EXPECT_EQ(convert_with_stringstream(1e4f), FpToString(1e4f));
EXPECT_EQ(convert_with_stringstream(1e5f), FpToString(1e5f));
EXPECT_EQ(convert_with_stringstream(1e6f), FpToString(1e6f));
EXPECT_EQ(convert_with_stringstream(1e7f), FpToString(1e7f));
EXPECT_EQ(convert_with_stringstream(1e8f), FpToString(1e8f));
EXPECT_EQ(convert_with_stringstream(1e9f), FpToString(1e9f));
// Print by default values below 1e6 without scientific notation
EXPECT_EQ("1", fp_to_string(1.f));
EXPECT_EQ("1", fp_to_string(1e0f));
EXPECT_EQ("10", fp_to_string(1e1f));
EXPECT_EQ("100", fp_to_string(1e2f));
EXPECT_EQ("1000", fp_to_string(1e3f));
EXPECT_EQ("10000", fp_to_string(1e4f));
EXPECT_EQ("100000", fp_to_string(1e5f));
EXPECT_EQ("1e+06", fp_to_string(1e6f));
EXPECT_EQ("1e+07", fp_to_string(1e7f));
EXPECT_EQ("1e+08", fp_to_string(1e8f));
EXPECT_EQ("1e+09", fp_to_string(1e9f));
EXPECT_EQ("1", FpToString(1.f));
EXPECT_EQ("1", FpToString(1e0f));
EXPECT_EQ("10", FpToString(1e1f));
EXPECT_EQ("100", FpToString(1e2f));
EXPECT_EQ("1000", FpToString(1e3f));
EXPECT_EQ("10000", FpToString(1e4f));
EXPECT_EQ("100000", FpToString(1e5f));
EXPECT_EQ("1e+06", FpToString(1e6f));
EXPECT_EQ("1e+07", FpToString(1e7f));
EXPECT_EQ("1e+08", FpToString(1e8f));
EXPECT_EQ("1e+09", FpToString(1e9f));
// prints the same way as std::stringstream
EXPECT_EQ(convert_with_stringstream(1.f), fp_to_string(1.f));
EXPECT_EQ(convert_with_stringstream(1e-0f), fp_to_string(1e-0f));
EXPECT_EQ(convert_with_stringstream(1e-1f), fp_to_string(1e-1f));
EXPECT_EQ(convert_with_stringstream(1e-2f), fp_to_string(1e-2f));
EXPECT_EQ(convert_with_stringstream(1e-3f), fp_to_string(1e-3f));
EXPECT_EQ(convert_with_stringstream(1e-4f), fp_to_string(1e-4f));
EXPECT_EQ(convert_with_stringstream(1e-5f), fp_to_string(1e-5f));
EXPECT_EQ(convert_with_stringstream(1e-6f), fp_to_string(1e-6f));
EXPECT_EQ(convert_with_stringstream(1e-7f), fp_to_string(1e-7f));
EXPECT_EQ(convert_with_stringstream(1e-8f), fp_to_string(1e-8f));
EXPECT_EQ(convert_with_stringstream(1e-9f), fp_to_string(1e-9f));
EXPECT_EQ(convert_with_stringstream(1.f), FpToString(1.f));
EXPECT_EQ(convert_with_stringstream(1e-0f), FpToString(1e-0f));
EXPECT_EQ(convert_with_stringstream(1e-1f), FpToString(1e-1f));
EXPECT_EQ(convert_with_stringstream(1e-2f), FpToString(1e-2f));
EXPECT_EQ(convert_with_stringstream(1e-3f), FpToString(1e-3f));
EXPECT_EQ(convert_with_stringstream(1e-4f), FpToString(1e-4f));
EXPECT_EQ(convert_with_stringstream(1e-5f), FpToString(1e-5f));
EXPECT_EQ(convert_with_stringstream(1e-6f), FpToString(1e-6f));
EXPECT_EQ(convert_with_stringstream(1e-7f), FpToString(1e-7f));
EXPECT_EQ(convert_with_stringstream(1e-8f), FpToString(1e-8f));
EXPECT_EQ(convert_with_stringstream(1e-9f), FpToString(1e-9f));
// Print by default values above 1e-5 without scientific notation
EXPECT_EQ("1", fp_to_string(1.f));
EXPECT_EQ("1", fp_to_string(1e-0f));
EXPECT_EQ("0.1", fp_to_string(1e-1f));
EXPECT_EQ("0.01", fp_to_string(1e-2f));
EXPECT_EQ("0.001", fp_to_string(1e-3f));
EXPECT_EQ("0.0001", fp_to_string(1e-4f));
EXPECT_EQ("1e-05", fp_to_string(1e-5f));
EXPECT_EQ("1e-06", fp_to_string(1e-6f));
EXPECT_EQ("1e-07", fp_to_string(1e-7f));
EXPECT_EQ("1e-08", fp_to_string(1e-8f));
EXPECT_EQ("1e-09", fp_to_string(1e-9f));
EXPECT_EQ("1", FpToString(1.f));
EXPECT_EQ("1", FpToString(1e-0f));
EXPECT_EQ("0.1", FpToString(1e-1f));
EXPECT_EQ("0.01", FpToString(1e-2f));
EXPECT_EQ("0.001", FpToString(1e-3f));
EXPECT_EQ("0.0001", FpToString(1e-4f));
EXPECT_EQ("1e-05", FpToString(1e-5f));
EXPECT_EQ("1e-06", FpToString(1e-6f));
EXPECT_EQ("1e-07", FpToString(1e-7f));
EXPECT_EQ("1e-08", FpToString(1e-8f));
EXPECT_EQ("1e-09", FpToString(1e-9f));
// changing precision has the same effect as std::stringstream
EXPECT_EQ(convert_with_stringstream(123.f, 1), fp_to_string(123.f, 1));
EXPECT_EQ(convert_with_stringstream(1234567.f, 7), fp_to_string(1234567.f, 7));
EXPECT_EQ(convert_with_stringstream(12345.67f, 7), fp_to_string(12345.67f, 7));
EXPECT_EQ(convert_with_stringstream(1234567e-9f, 7), fp_to_string(1234567e-9f, 7));
EXPECT_EQ(convert_with_stringstream(1234567e-9f, 1), fp_to_string(1234567e-9f, 1));
EXPECT_EQ(convert_with_stringstream(123.f, 1), FpToString(123.f, 1));
EXPECT_EQ(convert_with_stringstream(1234567.f, 7), FpToString(1234567.f, 7));
EXPECT_EQ(convert_with_stringstream(12345.67f, 7), FpToString(12345.67f, 7));
EXPECT_EQ(convert_with_stringstream(1234567e-9f, 7), FpToString(1234567e-9f, 7));
EXPECT_EQ(convert_with_stringstream(1234567e-9f, 1), FpToString(1234567e-9f, 1));
// known example that is difficult to round
EXPECT_EQ("1", fp_to_string(0.9999f, 2));
EXPECT_EQ("-1", fp_to_string(-0.9999f, 2));
EXPECT_EQ("1", FpToString(0.9999f, 2));
EXPECT_EQ("-1", FpToString(-0.9999f, 2));
// some more random tests
EXPECT_EQ("1.25", fp_to_string(1.25f));
EXPECT_EQ("34.34", fp_to_string(34.34f));
EXPECT_EQ("1e+20", fp_to_string(1e+20f));
EXPECT_EQ("1.1e+20", fp_to_string(1.1e+20f));
EXPECT_EQ("1e-20", fp_to_string(1e-20f));
EXPECT_EQ("1.1e-20", fp_to_string(1.1e-20f));
EXPECT_EQ("1e-20", fp_to_string(0.1e-19f));
EXPECT_EQ("1.1e-20", fp_to_string(0.11e-19f));
EXPECT_EQ("1.25", FpToString(1.25f));
EXPECT_EQ("34.34", FpToString(34.34f));
EXPECT_EQ("1e+20", FpToString(1e+20f));
EXPECT_EQ("1.1e+20", FpToString(1.1e+20f));
EXPECT_EQ("1e-20", FpToString(1e-20f));
EXPECT_EQ("1.1e-20", FpToString(1.1e-20f));
EXPECT_EQ("1e-20", FpToString(0.1e-19f));
EXPECT_EQ("1.1e-20", FpToString(0.11e-19f));
EXPECT_EQ("19", fp_to_string(18.9f, 2));
EXPECT_EQ("20", fp_to_string(19.9f, 2));
EXPECT_EQ("2e+01", fp_to_string(19.9f, 1));
EXPECT_EQ("1.2e-05", fp_to_string(1.234e-5f, 2));
EXPECT_EQ("1.3e-05", fp_to_string(1.299e-5f, 2));
EXPECT_EQ("19", FpToString(18.9f, 2));
EXPECT_EQ("20", FpToString(19.9f, 2));
EXPECT_EQ("2e+01", FpToString(19.9f, 1));
EXPECT_EQ("1.2e-05", FpToString(1.234e-5f, 2));
EXPECT_EQ("1.3e-05", FpToString(1.299e-5f, 2));
EXPECT_EQ("-1", fp_to_string(-1.f));
EXPECT_EQ("-1.25", fp_to_string(-1.25f));
EXPECT_EQ("-34.34", fp_to_string(-34.34f));
EXPECT_EQ("-1e+20", fp_to_string(-1e+20f));
EXPECT_EQ("-1.1e+20", fp_to_string(-1.1e+20f));
EXPECT_EQ("-1e-20", fp_to_string(-1e-20f));
EXPECT_EQ("-1.1e-20", fp_to_string(-1.1e-20f));
EXPECT_EQ("-1e-20", fp_to_string(-0.1e-19f));
EXPECT_EQ("-1.1e-20", fp_to_string(-0.11e-19f));
EXPECT_EQ("-1", FpToString(-1.f));
EXPECT_EQ("-1.25", FpToString(-1.25f));
EXPECT_EQ("-34.34", FpToString(-34.34f));
EXPECT_EQ("-1e+20", FpToString(-1e+20f));
EXPECT_EQ("-1.1e+20", FpToString(-1.1e+20f));
EXPECT_EQ("-1e-20", FpToString(-1e-20f));
EXPECT_EQ("-1.1e-20", FpToString(-1.1e-20f));
EXPECT_EQ("-1e-20", FpToString(-0.1e-19f));
EXPECT_EQ("-1.1e-20", FpToString(-0.11e-19f));
EXPECT_EQ("-19", fp_to_string(-18.9f, 2));
EXPECT_EQ("-20", fp_to_string(-19.9f, 2));
EXPECT_EQ("-2e+01", fp_to_string(-19.9f, 1));
EXPECT_EQ("-1.2e-05", fp_to_string(-1.234e-5f, 2));
EXPECT_EQ("-1.3e-05", fp_to_string(-1.299e-5f, 2));
EXPECT_EQ("-19", FpToString(-18.9f, 2));
EXPECT_EQ("-20", FpToString(-19.9f, 2));
EXPECT_EQ("-2e+01", FpToString(-19.9f, 1));
EXPECT_EQ("-1.2e-05", FpToString(-1.234e-5f, 2));
EXPECT_EQ("-1.3e-05", FpToString(-1.299e-5f, 2));
}
} // namespace