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🔨 cleanup after #915

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This commit is contained in:
Niels Lohmann
2018-01-21 15:55:35 +01:00
parent 010e596001
commit 3cca630836
6 changed files with 521 additions and 385 deletions
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50
test/src/unit-to_chars.cpp
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@ -60,26 +60,28 @@ static float make_float(uint64_t f, int e)
constexpr int kDenormalExponent = 1 - kExponentBias;
constexpr int kMaxExponent = 0xFF - kExponentBias;
while (f > kHiddenBit + kSignificandMask) {
while (f > kHiddenBit + kSignificandMask)
{
f >>= 1;
e++;
}
if (e >= kMaxExponent) {
if (e >= kMaxExponent)
{
return std::numeric_limits<float>::infinity();
}
if (e < kDenormalExponent) {
if (e < kDenormalExponent)
{
return 0.0;
}
while (e > kDenormalExponent && (f & kHiddenBit) == 0) {
while (e > kDenormalExponent && (f & kHiddenBit) == 0)
{
f <<= 1;
e--;
}
uint64_t biased_exponent;
if (e == kDenormalExponent && (f & kHiddenBit) == 0)
biased_exponent = 0;
else
biased_exponent = static_cast<uint64_t>(e + kExponentBias);
uint64_t biased_exponent = (e == kDenormalExponent && (f & kHiddenBit) == 0)
? 0
: static_cast<uint64_t>(e + kExponentBias);
uint64_t bits = (f & kSignificandMask) | (biased_exponent << kPhysicalSignificandSize);
return reinterpret_bits<float>(static_cast<uint32_t>(bits));
@ -110,26 +112,28 @@ static double make_double(uint64_t f, int e)
constexpr int kDenormalExponent = 1 - kExponentBias;
constexpr int kMaxExponent = 0x7FF - kExponentBias;
while (f > kHiddenBit + kSignificandMask) {
while (f > kHiddenBit + kSignificandMask)
{
f >>= 1;
e++;
}
if (e >= kMaxExponent) {
if (e >= kMaxExponent)
{
return std::numeric_limits<double>::infinity();
}
if (e < kDenormalExponent) {
if (e < kDenormalExponent)
{
return 0.0;
}
while (e > kDenormalExponent && (f & kHiddenBit) == 0) {
while (e > kDenormalExponent && (f & kHiddenBit) == 0)
{
f <<= 1;
e--;
}
uint64_t biased_exponent;
if (e == kDenormalExponent && (f & kHiddenBit) == 0)
biased_exponent = 0;
else
biased_exponent = static_cast<uint64_t>(e + kExponentBias);
uint64_t biased_exponent = (e == kDenormalExponent && (f & kHiddenBit) == 0)
? 0
: static_cast<uint64_t>(e + kExponentBias);
uint64_t bits = (f & kSignificandMask) | (biased_exponent << kPhysicalSignificandSize);
return reinterpret_bits<double>(bits);
@ -139,7 +143,7 @@ TEST_CASE("digit gen")
{
SECTION("single precision")
{
auto check_float = [](float number, const std::string& digits, int expected_exponent)
auto check_float = [](float number, const std::string & digits, int expected_exponent)
{
CAPTURE(number);
CAPTURE(digits);
@ -203,7 +207,7 @@ TEST_CASE("digit gen")
SECTION("double precision")
{
auto check_double = [](double number, const std::string& digits, int expected_exponent)
auto check_double = [](double number, const std::string & digits, int expected_exponent)
{
CAPTURE(number);
CAPTURE(digits);
@ -349,7 +353,7 @@ TEST_CASE("formatting")
{
SECTION("single precision")
{
auto check_float = [](float number, const std::string& expected)
auto check_float = [](float number, const std::string & expected)
{
char buf[32];
char* end = nlohmann::detail::to_chars(buf, buf + 32, number);
@ -357,7 +361,7 @@ TEST_CASE("formatting")
CHECK(actual == expected);
};
// %.9g
// %.9g
check_float( -1.2345e-22f, "-1.2345e-22" ); // -1.23450004e-22
check_float( -1.2345e-21f, "-1.2345e-21" ); // -1.23450002e-21
check_float( -1.2345e-20f, "-1.2345e-20" ); // -1.23450002e-20
@ -409,7 +413,7 @@ TEST_CASE("formatting")
SECTION("double precision")
{
auto check_double = [](double number, const std::string& expected)
auto check_double = [](double number, const std::string & expected)
{
char buf[32];
char* end = nlohmann::detail::to_chars(buf, buf + 32, number);