From c0ea39b218677d30f2639358a5b6338712c5a59c Mon Sep 17 00:00:00 2001 From: Ivan Chesnov Date: Wed, 19 Jul 2023 23:40:47 +0300 Subject: [PATCH] GH-36433: [C++] Update fast_float version to 3.10.1 (#36434) ### Rationale for this change Need this for parsing Infinity values with + sign. ### What changes are included in this PR? updated version of fast_float to version 3.10.1 (used this version because in higher versions c++ 20 started using that cause a lot of build errors) ### Are these changes tested? in scope of fast_float. ### Are there any user-facing changes? no * Closes: #36433 Lead-authored-by: Ivan Chesnov Co-authored-by: Ivan Chesnov Co-authored-by: Sutou Kouhei Signed-off-by: Sutou Kouhei --- cpp/src/arrow/util/value_parsing.cc | 2 + cpp/src/arrow/util/value_parsing_test.cc | 6 + cpp/src/arrow/vendored/fast_float/README.md | 4 +- .../arrow/vendored/fast_float/ascii_number.h | 15 +- cpp/src/arrow/vendored/fast_float/bigint.h | 144 +- .../fast_float/constexpr_feature_detect.h | 40 + .../vendored/fast_float/decimal_to_binary.h | 17 +- .../vendored/fast_float/digit_comparison.h | 37 +- .../arrow/vendored/fast_float/fast_float.h | 2 +- .../arrow/vendored/fast_float/fast_table.h | 1313 +++++++++-------- .../arrow/vendored/fast_float/float_common.h | 179 ++- .../arrow/vendored/fast_float/parse_number.h | 32 + cpp/src/arrow/vendored/fast_float/update.sh | 2 +- 13 files changed, 991 insertions(+), 802 deletions(-) create mode 100644 cpp/src/arrow/vendored/fast_float/constexpr_feature_detect.h diff --git a/cpp/src/arrow/util/value_parsing.cc b/cpp/src/arrow/util/value_parsing.cc index 92495612a7df8..f6a24ac1467f8 100644 --- a/cpp/src/arrow/util/value_parsing.cc +++ b/cpp/src/arrow/util/value_parsing.cc @@ -15,6 +15,8 @@ // specific language governing permissions and limitations // under the License. +#define FASTFLOAT_ALLOWS_LEADING_PLUS 1 + #include "arrow/util/value_parsing.h" #include diff --git a/cpp/src/arrow/util/value_parsing_test.cc b/cpp/src/arrow/util/value_parsing_test.cc index 6f83b6dfa6592..30c5e6aae74ba 100644 --- a/cpp/src/arrow/util/value_parsing_test.cc +++ b/cpp/src/arrow/util/value_parsing_test.cc @@ -119,6 +119,9 @@ TEST(StringConversion, ToFloat) { AssertConversion("0", 0.0f); AssertConversion("-0.0", -0.0f); AssertConversion("-1e20", -1e20f); + AssertConversion("+Infinity", std::numeric_limits::infinity()); + AssertConversion("-Infinity", -std::numeric_limits::infinity()); + AssertConversion("Infinity", std::numeric_limits::infinity()); AssertConversionFails(""); AssertConversionFails("e"); @@ -135,6 +138,9 @@ TEST(StringConversion, ToDouble) { AssertConversion("0", 0); AssertConversion("-0.0", -0.0); AssertConversion("-1e100", -1e100); + AssertConversion("+Infinity", std::numeric_limits::infinity()); + AssertConversion("-Infinity", -std::numeric_limits::infinity()); + AssertConversion("Infinity", std::numeric_limits::infinity()); AssertConversionFails(""); AssertConversionFails("e"); diff --git a/cpp/src/arrow/vendored/fast_float/README.md b/cpp/src/arrow/vendored/fast_float/README.md index 6d44654f2a721..b07c280e0ad44 100644 --- a/cpp/src/arrow/vendored/fast_float/README.md +++ b/cpp/src/arrow/vendored/fast_float/README.md @@ -20,7 +20,7 @@ # fast_float The files in this directory are vendored from fast_float -git tag `v3.8.1`. +git tag `v3.10.1`. See https://github.com/fastfloat/fast_float @@ -31,7 +31,7 @@ See https://github.com/fastfloat/fast_float ## How to update You must replace `VERSION` in the command lines with suitable version -such as `3.8.1`. +such as `3.10.1`. ```bash cpp/src/arrow/vendoered/fast_float/update.sh VERSION diff --git a/cpp/src/arrow/vendored/fast_float/ascii_number.h b/cpp/src/arrow/vendored/fast_float/ascii_number.h index 24ec813174a7a..6d825ccfb5a48 100644 --- a/cpp/src/arrow/vendored/fast_float/ascii_number.h +++ b/cpp/src/arrow/vendored/fast_float/ascii_number.h @@ -13,9 +13,11 @@ namespace fast_float { // Next function can be micro-optimized, but compilers are entirely // able to optimize it well. -fastfloat_really_inline bool is_integer(char c) noexcept { return c >= '0' && c <= '9'; } +fastfloat_really_inline constexpr bool is_integer(char c) noexcept { + return c >= '0' && c <= '9'; +} -fastfloat_really_inline uint64_t byteswap(uint64_t val) { +fastfloat_really_inline constexpr uint64_t byteswap(uint64_t val) { return (val & 0xFF00000000000000) >> 56 | (val & 0x00FF000000000000) >> 40 | (val & 0x0000FF0000000000) >> 24 @@ -45,7 +47,8 @@ fastfloat_really_inline void write_u64(uint8_t *chars, uint64_t val) { } // credit @aqrit -fastfloat_really_inline uint32_t parse_eight_digits_unrolled(uint64_t val) { +fastfloat_really_inline FASTFLOAT_CONSTEXPR14 +uint32_t parse_eight_digits_unrolled(uint64_t val) { const uint64_t mask = 0x000000FF000000FF; const uint64_t mul1 = 0x000F424000000064; // 100 + (1000000ULL << 32) const uint64_t mul2 = 0x0000271000000001; // 1 + (10000ULL << 32) @@ -60,7 +63,7 @@ fastfloat_really_inline uint32_t parse_eight_digits_unrolled(const char *chars) } // credit @aqrit -fastfloat_really_inline bool is_made_of_eight_digits_fast(uint64_t val) noexcept { +fastfloat_really_inline constexpr bool is_made_of_eight_digits_fast(uint64_t val) noexcept { return !((((val + 0x4646464646464646) | (val - 0x3030303030303030)) & 0x8080808080808080)); } @@ -94,7 +97,11 @@ parsed_number_string parse_number_string(const char *p, const char *pend, parse_ answer.valid = false; answer.too_many_digits = false; answer.negative = (*p == '-'); +#if FASTFLOAT_ALLOWS_LEADING_PLUS // disabled by default + if ((*p == '-') || (*p == '+')) { +#else if (*p == '-') { // C++17 20.19.3.(7.1) explicitly forbids '+' sign here +#endif ++p; if (p == pend) { return answer; diff --git a/cpp/src/arrow/vendored/fast_float/bigint.h b/cpp/src/arrow/vendored/fast_float/bigint.h index b733c7b64ba6a..bc083893ac4ca 100644 --- a/cpp/src/arrow/vendored/fast_float/bigint.h +++ b/cpp/src/arrow/vendored/fast_float/bigint.h @@ -51,27 +51,27 @@ struct stackvec { stackvec &operator=(stackvec &&other) = delete; // create stack vector from existing limb span. - stackvec(limb_span s) { + FASTFLOAT_CONSTEXPR20 stackvec(limb_span s) { FASTFLOAT_ASSERT(try_extend(s)); } - limb& operator[](size_t index) noexcept { + FASTFLOAT_CONSTEXPR14 limb& operator[](size_t index) noexcept { FASTFLOAT_DEBUG_ASSERT(index < length); return data[index]; } - const limb& operator[](size_t index) const noexcept { + FASTFLOAT_CONSTEXPR14 const limb& operator[](size_t index) const noexcept { FASTFLOAT_DEBUG_ASSERT(index < length); return data[index]; } // index from the end of the container - const limb& rindex(size_t index) const noexcept { + FASTFLOAT_CONSTEXPR14 const limb& rindex(size_t index) const noexcept { FASTFLOAT_DEBUG_ASSERT(index < length); size_t rindex = length - index - 1; return data[rindex]; } // set the length, without bounds checking. - void set_len(size_t len) noexcept { + FASTFLOAT_CONSTEXPR14 void set_len(size_t len) noexcept { length = uint16_t(len); } constexpr size_t len() const noexcept { @@ -84,12 +84,12 @@ struct stackvec { return size; } // append item to vector, without bounds checking - void push_unchecked(limb value) noexcept { + FASTFLOAT_CONSTEXPR14 void push_unchecked(limb value) noexcept { data[length] = value; length++; } // append item to vector, returning if item was added - bool try_push(limb value) noexcept { + FASTFLOAT_CONSTEXPR14 bool try_push(limb value) noexcept { if (len() < capacity()) { push_unchecked(value); return true; @@ -98,13 +98,13 @@ struct stackvec { } } // add items to the vector, from a span, without bounds checking - void extend_unchecked(limb_span s) noexcept { + FASTFLOAT_CONSTEXPR20 void extend_unchecked(limb_span s) noexcept { limb* ptr = data + length; - ::memcpy((void*)ptr, (const void*)s.ptr, sizeof(limb) * s.len()); + std::copy_n(s.ptr, s.len(), ptr); set_len(len() + s.len()); } // try to add items to the vector, returning if items were added - bool try_extend(limb_span s) noexcept { + FASTFLOAT_CONSTEXPR20 bool try_extend(limb_span s) noexcept { if (len() + s.len() <= capacity()) { extend_unchecked(s); return true; @@ -115,6 +115,7 @@ struct stackvec { // resize the vector, without bounds checking // if the new size is longer than the vector, assign value to each // appended item. + FASTFLOAT_CONSTEXPR20 void resize_unchecked(size_t new_len, limb value) noexcept { if (new_len > len()) { size_t count = new_len - len(); @@ -127,7 +128,7 @@ struct stackvec { } } // try to resize the vector, returning if the vector was resized. - bool try_resize(size_t new_len, limb value) noexcept { + FASTFLOAT_CONSTEXPR20 bool try_resize(size_t new_len, limb value) noexcept { if (new_len > capacity()) { return false; } else { @@ -138,7 +139,7 @@ struct stackvec { // check if any limbs are non-zero after the given index. // this needs to be done in reverse order, since the index // is relative to the most significant limbs. - bool nonzero(size_t index) const noexcept { + FASTFLOAT_CONSTEXPR14 bool nonzero(size_t index) const noexcept { while (index < len()) { if (rindex(index) != 0) { return true; @@ -148,27 +149,27 @@ struct stackvec { return false; } // normalize the big integer, so most-significant zero limbs are removed. - void normalize() noexcept { + FASTFLOAT_CONSTEXPR14 void normalize() noexcept { while (len() > 0 && rindex(0) == 0) { length--; } } }; -fastfloat_really_inline +fastfloat_really_inline FASTFLOAT_CONSTEXPR14 uint64_t empty_hi64(bool& truncated) noexcept { truncated = false; return 0; } -fastfloat_really_inline +fastfloat_really_inline FASTFLOAT_CONSTEXPR20 uint64_t uint64_hi64(uint64_t r0, bool& truncated) noexcept { truncated = false; int shl = leading_zeroes(r0); return r0 << shl; } -fastfloat_really_inline +fastfloat_really_inline FASTFLOAT_CONSTEXPR20 uint64_t uint64_hi64(uint64_t r0, uint64_t r1, bool& truncated) noexcept { int shl = leading_zeroes(r0); if (shl == 0) { @@ -181,19 +182,19 @@ uint64_t uint64_hi64(uint64_t r0, uint64_t r1, bool& truncated) noexcept { } } -fastfloat_really_inline +fastfloat_really_inline FASTFLOAT_CONSTEXPR20 uint64_t uint32_hi64(uint32_t r0, bool& truncated) noexcept { return uint64_hi64(r0, truncated); } -fastfloat_really_inline +fastfloat_really_inline FASTFLOAT_CONSTEXPR20 uint64_t uint32_hi64(uint32_t r0, uint32_t r1, bool& truncated) noexcept { uint64_t x0 = r0; uint64_t x1 = r1; return uint64_hi64((x0 << 32) | x1, truncated); } -fastfloat_really_inline +fastfloat_really_inline FASTFLOAT_CONSTEXPR20 uint64_t uint32_hi64(uint32_t r0, uint32_t r1, uint32_t r2, bool& truncated) noexcept { uint64_t x0 = r0; uint64_t x1 = r1; @@ -205,15 +206,16 @@ uint64_t uint32_hi64(uint32_t r0, uint32_t r1, uint32_t r2, bool& truncated) noe // we want an efficient operation. for msvc, where // we don't have built-in intrinsics, this is still // pretty fast. -fastfloat_really_inline +fastfloat_really_inline FASTFLOAT_CONSTEXPR20 limb scalar_add(limb x, limb y, bool& overflow) noexcept { limb z; - // gcc and clang #if defined(__has_builtin) #if __has_builtin(__builtin_add_overflow) - overflow = __builtin_add_overflow(x, y, &z); - return z; + if (!cpp20_and_in_constexpr()) { + overflow = __builtin_add_overflow(x, y, &z); + return z; + } #endif #endif @@ -224,7 +226,7 @@ limb scalar_add(limb x, limb y, bool& overflow) noexcept { } // multiply two small integers, getting both the high and low bits. -fastfloat_really_inline +fastfloat_really_inline FASTFLOAT_CONSTEXPR20 limb scalar_mul(limb x, limb y, limb& carry) noexcept { #ifdef FASTFLOAT_64BIT_LIMB #if defined(__SIZEOF_INT128__) @@ -252,7 +254,8 @@ limb scalar_mul(limb x, limb y, limb& carry) noexcept { // add scalar value to bigint starting from offset. // used in grade school multiplication template -inline bool small_add_from(stackvec& vec, limb y, size_t start) noexcept { +inline FASTFLOAT_CONSTEXPR20 +bool small_add_from(stackvec& vec, limb y, size_t start) noexcept { size_t index = start; limb carry = y; bool overflow; @@ -269,13 +272,15 @@ inline bool small_add_from(stackvec& vec, limb y, size_t start) noexcept { // add scalar value to bigint. template -fastfloat_really_inline bool small_add(stackvec& vec, limb y) noexcept { +fastfloat_really_inline FASTFLOAT_CONSTEXPR20 +bool small_add(stackvec& vec, limb y) noexcept { return small_add_from(vec, y, 0); } // multiply bigint by scalar value. template -inline bool small_mul(stackvec& vec, limb y) noexcept { +inline FASTFLOAT_CONSTEXPR20 +bool small_mul(stackvec& vec, limb y) noexcept { limb carry = 0; for (size_t index = 0; index < vec.len(); index++) { vec[index] = scalar_mul(vec[index], y, carry); @@ -289,6 +294,7 @@ inline bool small_mul(stackvec& vec, limb y) noexcept { // add bigint to bigint starting from index. // used in grade school multiplication template +FASTFLOAT_CONSTEXPR20 bool large_add_from(stackvec& x, limb_span y, size_t start) noexcept { // the effective x buffer is from `xstart..x.len()`, so exit early // if we can't get that current range. @@ -319,12 +325,14 @@ bool large_add_from(stackvec& x, limb_span y, size_t start) noexcept { // add bigint to bigint. template -fastfloat_really_inline bool large_add_from(stackvec& x, limb_span y) noexcept { +fastfloat_really_inline FASTFLOAT_CONSTEXPR20 +bool large_add_from(stackvec& x, limb_span y) noexcept { return large_add_from(x, y, 0); } // grade-school multiplication algorithm template +FASTFLOAT_CONSTEXPR20 bool long_mul(stackvec& x, limb_span y) noexcept { limb_span xs = limb_span(x.data, x.len()); stackvec z(xs); @@ -353,6 +361,7 @@ bool long_mul(stackvec& x, limb_span y) noexcept { // grade-school multiplication algorithm template +FASTFLOAT_CONSTEXPR20 bool large_mul(stackvec& x, limb_span y) noexcept { if (y.len() == 1) { FASTFLOAT_TRY(small_mul(x, y[0])); @@ -362,21 +371,52 @@ bool large_mul(stackvec& x, limb_span y) noexcept { return true; } +template +struct pow5_tables { + static constexpr uint32_t large_step = 135; + static constexpr uint64_t small_power_of_5[] = { + 1UL, 5UL, 25UL, 125UL, 625UL, 3125UL, 15625UL, 78125UL, 390625UL, + 1953125UL, 9765625UL, 48828125UL, 244140625UL, 1220703125UL, + 6103515625UL, 30517578125UL, 152587890625UL, 762939453125UL, + 3814697265625UL, 19073486328125UL, 95367431640625UL, 476837158203125UL, + 2384185791015625UL, 11920928955078125UL, 59604644775390625UL, + 298023223876953125UL, 1490116119384765625UL, 7450580596923828125UL, + }; +#ifdef FASTFLOAT_64BIT_LIMB + constexpr static limb large_power_of_5[] = { + 1414648277510068013UL, 9180637584431281687UL, 4539964771860779200UL, + 10482974169319127550UL, 198276706040285095UL}; +#else + constexpr static limb large_power_of_5[] = { + 4279965485U, 329373468U, 4020270615U, 2137533757U, 4287402176U, + 1057042919U, 1071430142U, 2440757623U, 381945767U, 46164893U}; +#endif +}; + +template +constexpr uint32_t pow5_tables::large_step; + +template +constexpr uint64_t pow5_tables::small_power_of_5[]; + +template +constexpr limb pow5_tables::large_power_of_5[]; + // big integer type. implements a small subset of big integer // arithmetic, using simple algorithms since asymptotically // faster algorithms are slower for a small number of limbs. // all operations assume the big-integer is normalized. -struct bigint { +struct bigint : pow5_tables<> { // storage of the limbs, in little-endian order. stackvec vec; - bigint(): vec() {} + FASTFLOAT_CONSTEXPR20 bigint(): vec() {} bigint(const bigint &) = delete; bigint &operator=(const bigint &) = delete; bigint(bigint &&) = delete; bigint &operator=(bigint &&other) = delete; - bigint(uint64_t value): vec() { + FASTFLOAT_CONSTEXPR20 bigint(uint64_t value): vec() { #ifdef FASTFLOAT_64BIT_LIMB vec.push_unchecked(value); #else @@ -388,7 +428,7 @@ struct bigint { // get the high 64 bits from the vector, and if bits were truncated. // this is to get the significant digits for the float. - uint64_t hi64(bool& truncated) const noexcept { + FASTFLOAT_CONSTEXPR20 uint64_t hi64(bool& truncated) const noexcept { #ifdef FASTFLOAT_64BIT_LIMB if (vec.len() == 0) { return empty_hi64(truncated); @@ -420,7 +460,7 @@ struct bigint { // positive, this is larger, otherwise they are equal. // the limbs are stored in little-endian order, so we // must compare the limbs in ever order. - int compare(const bigint& other) const noexcept { + FASTFLOAT_CONSTEXPR20 int compare(const bigint& other) const noexcept { if (vec.len() > other.vec.len()) { return 1; } else if (vec.len() < other.vec.len()) { @@ -441,7 +481,7 @@ struct bigint { // shift left each limb n bits, carrying over to the new limb // returns true if we were able to shift all the digits. - bool shl_bits(size_t n) noexcept { + FASTFLOAT_CONSTEXPR20 bool shl_bits(size_t n) noexcept { // Internally, for each item, we shift left by n, and add the previous // right shifted limb-bits. // For example, we transform (for u8) shifted left 2, to: @@ -467,7 +507,7 @@ struct bigint { } // move the limbs left by `n` limbs. - bool shl_limbs(size_t n) noexcept { + FASTFLOAT_CONSTEXPR20 bool shl_limbs(size_t n) noexcept { FASTFLOAT_DEBUG_ASSERT(n != 0); if (n + vec.len() > vec.capacity()) { return false; @@ -488,7 +528,7 @@ struct bigint { } // move the limbs left by `n` bits. - bool shl(size_t n) noexcept { + FASTFLOAT_CONSTEXPR20 bool shl(size_t n) noexcept { size_t rem = n % limb_bits; size_t div = n / limb_bits; if (rem != 0) { @@ -501,7 +541,7 @@ struct bigint { } // get the number of leading zeros in the bigint. - int ctlz() const noexcept { + FASTFLOAT_CONSTEXPR20 int ctlz() const noexcept { if (vec.is_empty()) { return 0; } else { @@ -516,45 +556,27 @@ struct bigint { } // get the number of bits in the bigint. - int bit_length() const noexcept { + FASTFLOAT_CONSTEXPR20 int bit_length() const noexcept { int lz = ctlz(); return int(limb_bits * vec.len()) - lz; } - bool mul(limb y) noexcept { + FASTFLOAT_CONSTEXPR20 bool mul(limb y) noexcept { return small_mul(vec, y); } - bool add(limb y) noexcept { + FASTFLOAT_CONSTEXPR20 bool add(limb y) noexcept { return small_add(vec, y); } // multiply as if by 2 raised to a power. - bool pow2(uint32_t exp) noexcept { + FASTFLOAT_CONSTEXPR20 bool pow2(uint32_t exp) noexcept { return shl(exp); } // multiply as if by 5 raised to a power. - bool pow5(uint32_t exp) noexcept { + FASTFLOAT_CONSTEXPR20 bool pow5(uint32_t exp) noexcept { // multiply by a power of 5 - static constexpr uint32_t large_step = 135; - static constexpr uint64_t small_power_of_5[] = { - 1UL, 5UL, 25UL, 125UL, 625UL, 3125UL, 15625UL, 78125UL, 390625UL, - 1953125UL, 9765625UL, 48828125UL, 244140625UL, 1220703125UL, - 6103515625UL, 30517578125UL, 152587890625UL, 762939453125UL, - 3814697265625UL, 19073486328125UL, 95367431640625UL, 476837158203125UL, - 2384185791015625UL, 11920928955078125UL, 59604644775390625UL, - 298023223876953125UL, 1490116119384765625UL, 7450580596923828125UL, - }; -#ifdef FASTFLOAT_64BIT_LIMB - constexpr static limb large_power_of_5[] = { - 1414648277510068013UL, 9180637584431281687UL, 4539964771860779200UL, - 10482974169319127550UL, 198276706040285095UL}; -#else - constexpr static limb large_power_of_5[] = { - 4279965485U, 329373468U, 4020270615U, 2137533757U, 4287402176U, - 1057042919U, 1071430142U, 2440757623U, 381945767U, 46164893U}; -#endif size_t large_length = sizeof(large_power_of_5) / sizeof(limb); limb_span large = limb_span(large_power_of_5, large_length); while (exp >= large_step) { @@ -580,7 +602,7 @@ struct bigint { } // multiply as if by 10 raised to a power. - bool pow10(uint32_t exp) noexcept { + FASTFLOAT_CONSTEXPR20 bool pow10(uint32_t exp) noexcept { FASTFLOAT_TRY(pow5(exp)); return pow2(exp); } diff --git a/cpp/src/arrow/vendored/fast_float/constexpr_feature_detect.h b/cpp/src/arrow/vendored/fast_float/constexpr_feature_detect.h new file mode 100644 index 0000000000000..ba8b65c64a160 --- /dev/null +++ b/cpp/src/arrow/vendored/fast_float/constexpr_feature_detect.h @@ -0,0 +1,40 @@ +#ifndef FASTFLOAT_CONSTEXPR_FEATURE_DETECT_H +#define FASTFLOAT_CONSTEXPR_FEATURE_DETECT_H + +#ifdef __has_include +#if __has_include() +#include +#endif +#endif + +// Testing for https://wg21.link/N3652, adopted in C++14 +#if __cpp_constexpr >= 201304 +#define FASTFLOAT_CONSTEXPR14 constexpr +#else +#define FASTFLOAT_CONSTEXPR14 +#endif + +#if defined(__cpp_lib_bit_cast) && __cpp_lib_bit_cast >= 201806L +#define FASTFLOAT_HAS_BIT_CAST 1 +#else +#define FASTFLOAT_HAS_BIT_CAST 0 +#endif + +#if defined(__cpp_lib_is_constant_evaluated) && __cpp_lib_is_constant_evaluated >= 201811L +#define FASTFLOAT_HAS_IS_CONSTANT_EVALUATED 1 +#else +#define FASTFLOAT_HAS_IS_CONSTANT_EVALUATED 0 +#endif + +// Testing for relevant C++20 constexpr library features +#if FASTFLOAT_HAS_IS_CONSTANT_EVALUATED \ + && FASTFLOAT_HAS_BIT_CAST \ + && __cpp_lib_constexpr_algorithms >= 201806L /*For std::copy and std::fill*/ +#define FASTFLOAT_CONSTEXPR20 constexpr +#define FASTFLOAT_IS_CONSTEXPR 1 +#else +#define FASTFLOAT_CONSTEXPR20 +#define FASTFLOAT_IS_CONSTEXPR 0 +#endif + +#endif // FASTFLOAT_CONSTEXPR_FEATURE_DETECT_H diff --git a/cpp/src/arrow/vendored/fast_float/decimal_to_binary.h b/cpp/src/arrow/vendored/fast_float/decimal_to_binary.h index 8ae481d323865..9390228c3946a 100644 --- a/cpp/src/arrow/vendored/fast_float/decimal_to_binary.h +++ b/cpp/src/arrow/vendored/fast_float/decimal_to_binary.h @@ -64,7 +64,7 @@ namespace detail { // create an adjusted mantissa, biased by the invalid power2 // for significant digits already multiplied by 10 ** q. template -fastfloat_really_inline +fastfloat_really_inline FASTFLOAT_CONSTEXPR14 adjusted_mantissa compute_error_scaled(int64_t q, uint64_t w, int lz) noexcept { int hilz = int(w >> 63) ^ 1; adjusted_mantissa answer; @@ -118,16 +118,11 @@ adjusted_mantissa compute_float(int64_t q, uint64_t w) noexcept { // 3. We might lose a bit due to the "upperbit" routine (result too small, requiring a shift) value128 product = compute_product_approximation(q, w); - if(product.low == 0xFFFFFFFFFFFFFFFF) { // could guard it further - // In some very rare cases, this could happen, in which case we might need a more accurate - // computation that what we can provide cheaply. This is very, very unlikely. - // - const bool inside_safe_exponent = (q >= -27) && (q <= 55); // always good because 5**q <2**128 when q>=0, - // and otherwise, for q<0, we have 5**-q<2**64 and the 128-bit reciprocal allows for exact computation. - if(!inside_safe_exponent) { - return compute_error_scaled(q, product.high, lz); - } - } + // The computed 'product' is always sufficient. + // Mathematical proof: + // Noble Mushtak and Daniel Lemire, Fast Number Parsing Without Fallback (to appear) + // See script/mushtak_lemire.py + // The "compute_product_approximation" function can be slightly slower than a branchless approach: // value128 product = compute_product(q, w); // but in practice, we can win big with the compute_product_approximation if its additional branch diff --git a/cpp/src/arrow/vendored/fast_float/digit_comparison.h b/cpp/src/arrow/vendored/fast_float/digit_comparison.h index 5cb01a93648fd..b27348a1fcc7e 100644 --- a/cpp/src/arrow/vendored/fast_float/digit_comparison.h +++ b/cpp/src/arrow/vendored/fast_float/digit_comparison.h @@ -24,7 +24,8 @@ constexpr static uint64_t powers_of_ten_uint64[] = { // this algorithm is not even close to optimized, but it has no practical // effect on performance: in order to have a faster algorithm, we'd need // to slow down performance for faster algorithms, and this is still fast. -fastfloat_really_inline int32_t scientific_exponent(parsed_number_string& num) noexcept { +fastfloat_really_inline FASTFLOAT_CONSTEXPR14 +int32_t scientific_exponent(parsed_number_string& num) noexcept { uint64_t mantissa = num.mantissa; int32_t exponent = int32_t(num.exponent); while (mantissa >= 10000) { @@ -82,7 +83,8 @@ fastfloat_really_inline adjusted_mantissa to_extended_halfway(T value) noexcept // round an extended-precision float to the nearest machine float. template -fastfloat_really_inline void round(adjusted_mantissa& am, callback cb) noexcept { +fastfloat_really_inline FASTFLOAT_CONSTEXPR14 +void round(adjusted_mantissa& am, callback cb) noexcept { int32_t mantissa_shift = 64 - binary_format::mantissa_explicit_bits() - 1; if (-am.power2 >= mantissa_shift) { // have a denormal float @@ -111,23 +113,19 @@ fastfloat_really_inline void round(adjusted_mantissa& am, callback cb) noexcept } template -fastfloat_really_inline +fastfloat_really_inline FASTFLOAT_CONSTEXPR14 void round_nearest_tie_even(adjusted_mantissa& am, int32_t shift, callback cb) noexcept { - uint64_t mask; - uint64_t halfway; - if (shift == 64) { - mask = UINT64_MAX; - } else { - mask = (uint64_t(1) << shift) - 1; - } - if (shift == 0) { - halfway = 0; - } else { - halfway = uint64_t(1) << (shift - 1); - } + const uint64_t mask + = (shift == 64) + ? UINT64_MAX + : (uint64_t(1) << shift) - 1; + const uint64_t halfway + = (shift == 0) + ? 0 + : uint64_t(1) << (shift - 1); uint64_t truncated_bits = am.mantissa & mask; - uint64_t is_above = truncated_bits > halfway; - uint64_t is_halfway = truncated_bits == halfway; + bool is_above = truncated_bits > halfway; + bool is_halfway = truncated_bits == halfway; // shift digits into position if (shift == 64) { @@ -141,7 +139,8 @@ void round_nearest_tie_even(adjusted_mantissa& am, int32_t shift, callback cb) n am.mantissa += uint64_t(cb(is_odd, is_halfway, is_above)); } -fastfloat_really_inline void round_down(adjusted_mantissa& am, int32_t shift) noexcept { +fastfloat_really_inline FASTFLOAT_CONSTEXPR14 +void round_down(adjusted_mantissa& am, int32_t shift) noexcept { if (shift == 64) { am.mantissa = 0; } else { @@ -200,7 +199,7 @@ void parse_eight_digits(const char*& p, limb& value, size_t& counter, size_t& co count += 8; } -fastfloat_really_inline +fastfloat_really_inline FASTFLOAT_CONSTEXPR14 void parse_one_digit(const char*& p, limb& value, size_t& counter, size_t& count) noexcept { value = value * 10 + limb(*p - '0'); p++; diff --git a/cpp/src/arrow/vendored/fast_float/fast_float.h b/cpp/src/arrow/vendored/fast_float/fast_float.h index b379efdd9e409..7942fe35ad1d3 100644 --- a/cpp/src/arrow/vendored/fast_float/fast_float.h +++ b/cpp/src/arrow/vendored/fast_float/fast_float.h @@ -59,7 +59,7 @@ template from_chars_result from_chars_advanced(const char *first, const char *last, T &value, parse_options options) noexcept; -} +} // namespace fast_float } // namespace arrow_vendored #include "parse_number.h" #endif // FASTFLOAT_FAST_FLOAT_H diff --git a/cpp/src/arrow/vendored/fast_float/fast_table.h b/cpp/src/arrow/vendored/fast_float/fast_table.h index 4861cab3a0d84..2c637d85c8fb0 100644 --- a/cpp/src/arrow/vendored/fast_float/fast_table.h +++ b/cpp/src/arrow/vendored/fast_float/fast_table.h @@ -18,11 +18,11 @@ namespace fast_float { */ /** - * The smallest non-zero float (binary64) is 2^−1074. + * The smallest non-zero float (binary64) is 2^-1074. * We take as input numbers of the form w x 10^q where w < 2^64. * We have that w * 10^-343 < 2^(64-344) 5^-343 < 2^-1076. * However, we have that - * (2^64-1) * 10^-342 = (2^64-1) * 2^-342 * 5^-342 > 2^−1074. + * (2^64-1) * 10^-342 = (2^64-1) * 2^-342 * 5^-342 > 2^-1074. * Thus it is possible for a number of the form w * 10^-342 where * w is a 64-bit value to be a non-zero floating-point number. ********* @@ -37,665 +37,666 @@ constexpr static int smallest_power_of_five = binary_format::smallest_po constexpr static int largest_power_of_five = binary_format::largest_power_of_ten(); constexpr static int number_of_entries = 2 * (largest_power_of_five - smallest_power_of_five + 1); // Powers of five from 5^-342 all the way to 5^308 rounded toward one. -static const uint64_t power_of_five_128[number_of_entries]; +constexpr static uint64_t power_of_five_128[number_of_entries] = { + 0xeef453d6923bd65a,0x113faa2906a13b3f, + 0x9558b4661b6565f8,0x4ac7ca59a424c507, + 0xbaaee17fa23ebf76,0x5d79bcf00d2df649, + 0xe95a99df8ace6f53,0xf4d82c2c107973dc, + 0x91d8a02bb6c10594,0x79071b9b8a4be869, + 0xb64ec836a47146f9,0x9748e2826cdee284, + 0xe3e27a444d8d98b7,0xfd1b1b2308169b25, + 0x8e6d8c6ab0787f72,0xfe30f0f5e50e20f7, + 0xb208ef855c969f4f,0xbdbd2d335e51a935, + 0xde8b2b66b3bc4723,0xad2c788035e61382, + 0x8b16fb203055ac76,0x4c3bcb5021afcc31, + 0xaddcb9e83c6b1793,0xdf4abe242a1bbf3d, + 0xd953e8624b85dd78,0xd71d6dad34a2af0d, + 0x87d4713d6f33aa6b,0x8672648c40e5ad68, + 0xa9c98d8ccb009506,0x680efdaf511f18c2, + 0xd43bf0effdc0ba48,0x212bd1b2566def2, + 0x84a57695fe98746d,0x14bb630f7604b57, + 0xa5ced43b7e3e9188,0x419ea3bd35385e2d, + 0xcf42894a5dce35ea,0x52064cac828675b9, + 0x818995ce7aa0e1b2,0x7343efebd1940993, + 0xa1ebfb4219491a1f,0x1014ebe6c5f90bf8, + 0xca66fa129f9b60a6,0xd41a26e077774ef6, + 0xfd00b897478238d0,0x8920b098955522b4, + 0x9e20735e8cb16382,0x55b46e5f5d5535b0, + 0xc5a890362fddbc62,0xeb2189f734aa831d, + 0xf712b443bbd52b7b,0xa5e9ec7501d523e4, + 0x9a6bb0aa55653b2d,0x47b233c92125366e, + 0xc1069cd4eabe89f8,0x999ec0bb696e840a, + 0xf148440a256e2c76,0xc00670ea43ca250d, + 0x96cd2a865764dbca,0x380406926a5e5728, + 0xbc807527ed3e12bc,0xc605083704f5ecf2, + 0xeba09271e88d976b,0xf7864a44c633682e, + 0x93445b8731587ea3,0x7ab3ee6afbe0211d, + 0xb8157268fdae9e4c,0x5960ea05bad82964, + 0xe61acf033d1a45df,0x6fb92487298e33bd, + 0x8fd0c16206306bab,0xa5d3b6d479f8e056, + 0xb3c4f1ba87bc8696,0x8f48a4899877186c, + 0xe0b62e2929aba83c,0x331acdabfe94de87, + 0x8c71dcd9ba0b4925,0x9ff0c08b7f1d0b14, + 0xaf8e5410288e1b6f,0x7ecf0ae5ee44dd9, + 0xdb71e91432b1a24a,0xc9e82cd9f69d6150, + 0x892731ac9faf056e,0xbe311c083a225cd2, + 0xab70fe17c79ac6ca,0x6dbd630a48aaf406, + 0xd64d3d9db981787d,0x92cbbccdad5b108, + 0x85f0468293f0eb4e,0x25bbf56008c58ea5, + 0xa76c582338ed2621,0xaf2af2b80af6f24e, + 0xd1476e2c07286faa,0x1af5af660db4aee1, + 0x82cca4db847945ca,0x50d98d9fc890ed4d, + 0xa37fce126597973c,0xe50ff107bab528a0, + 0xcc5fc196fefd7d0c,0x1e53ed49a96272c8, + 0xff77b1fcbebcdc4f,0x25e8e89c13bb0f7a, + 0x9faacf3df73609b1,0x77b191618c54e9ac, + 0xc795830d75038c1d,0xd59df5b9ef6a2417, + 0xf97ae3d0d2446f25,0x4b0573286b44ad1d, + 0x9becce62836ac577,0x4ee367f9430aec32, + 0xc2e801fb244576d5,0x229c41f793cda73f, + 0xf3a20279ed56d48a,0x6b43527578c1110f, + 0x9845418c345644d6,0x830a13896b78aaa9, + 0xbe5691ef416bd60c,0x23cc986bc656d553, + 0xedec366b11c6cb8f,0x2cbfbe86b7ec8aa8, + 0x94b3a202eb1c3f39,0x7bf7d71432f3d6a9, + 0xb9e08a83a5e34f07,0xdaf5ccd93fb0cc53, + 0xe858ad248f5c22c9,0xd1b3400f8f9cff68, + 0x91376c36d99995be,0x23100809b9c21fa1, + 0xb58547448ffffb2d,0xabd40a0c2832a78a, + 0xe2e69915b3fff9f9,0x16c90c8f323f516c, + 0x8dd01fad907ffc3b,0xae3da7d97f6792e3, + 0xb1442798f49ffb4a,0x99cd11cfdf41779c, + 0xdd95317f31c7fa1d,0x40405643d711d583, + 0x8a7d3eef7f1cfc52,0x482835ea666b2572, + 0xad1c8eab5ee43b66,0xda3243650005eecf, + 0xd863b256369d4a40,0x90bed43e40076a82, + 0x873e4f75e2224e68,0x5a7744a6e804a291, + 0xa90de3535aaae202,0x711515d0a205cb36, + 0xd3515c2831559a83,0xd5a5b44ca873e03, + 0x8412d9991ed58091,0xe858790afe9486c2, + 0xa5178fff668ae0b6,0x626e974dbe39a872, + 0xce5d73ff402d98e3,0xfb0a3d212dc8128f, + 0x80fa687f881c7f8e,0x7ce66634bc9d0b99, + 0xa139029f6a239f72,0x1c1fffc1ebc44e80, + 0xc987434744ac874e,0xa327ffb266b56220, + 0xfbe9141915d7a922,0x4bf1ff9f0062baa8, + 0x9d71ac8fada6c9b5,0x6f773fc3603db4a9, + 0xc4ce17b399107c22,0xcb550fb4384d21d3, + 0xf6019da07f549b2b,0x7e2a53a146606a48, + 0x99c102844f94e0fb,0x2eda7444cbfc426d, + 0xc0314325637a1939,0xfa911155fefb5308, + 0xf03d93eebc589f88,0x793555ab7eba27ca, + 0x96267c7535b763b5,0x4bc1558b2f3458de, + 0xbbb01b9283253ca2,0x9eb1aaedfb016f16, + 0xea9c227723ee8bcb,0x465e15a979c1cadc, + 0x92a1958a7675175f,0xbfacd89ec191ec9, + 0xb749faed14125d36,0xcef980ec671f667b, + 0xe51c79a85916f484,0x82b7e12780e7401a, + 0x8f31cc0937ae58d2,0xd1b2ecb8b0908810, + 0xb2fe3f0b8599ef07,0x861fa7e6dcb4aa15, + 0xdfbdcece67006ac9,0x67a791e093e1d49a, + 0x8bd6a141006042bd,0xe0c8bb2c5c6d24e0, + 0xaecc49914078536d,0x58fae9f773886e18, + 0xda7f5bf590966848,0xaf39a475506a899e, + 0x888f99797a5e012d,0x6d8406c952429603, + 0xaab37fd7d8f58178,0xc8e5087ba6d33b83, + 0xd5605fcdcf32e1d6,0xfb1e4a9a90880a64, + 0x855c3be0a17fcd26,0x5cf2eea09a55067f, + 0xa6b34ad8c9dfc06f,0xf42faa48c0ea481e, + 0xd0601d8efc57b08b,0xf13b94daf124da26, + 0x823c12795db6ce57,0x76c53d08d6b70858, + 0xa2cb1717b52481ed,0x54768c4b0c64ca6e, + 0xcb7ddcdda26da268,0xa9942f5dcf7dfd09, + 0xfe5d54150b090b02,0xd3f93b35435d7c4c, + 0x9efa548d26e5a6e1,0xc47bc5014a1a6daf, + 0xc6b8e9b0709f109a,0x359ab6419ca1091b, + 0xf867241c8cc6d4c0,0xc30163d203c94b62, + 0x9b407691d7fc44f8,0x79e0de63425dcf1d, + 0xc21094364dfb5636,0x985915fc12f542e4, + 0xf294b943e17a2bc4,0x3e6f5b7b17b2939d, + 0x979cf3ca6cec5b5a,0xa705992ceecf9c42, + 0xbd8430bd08277231,0x50c6ff782a838353, + 0xece53cec4a314ebd,0xa4f8bf5635246428, + 0x940f4613ae5ed136,0x871b7795e136be99, + 0xb913179899f68584,0x28e2557b59846e3f, + 0xe757dd7ec07426e5,0x331aeada2fe589cf, + 0x9096ea6f3848984f,0x3ff0d2c85def7621, + 0xb4bca50b065abe63,0xfed077a756b53a9, + 0xe1ebce4dc7f16dfb,0xd3e8495912c62894, + 0x8d3360f09cf6e4bd,0x64712dd7abbbd95c, + 0xb080392cc4349dec,0xbd8d794d96aacfb3, + 0xdca04777f541c567,0xecf0d7a0fc5583a0, + 0x89e42caaf9491b60,0xf41686c49db57244, + 0xac5d37d5b79b6239,0x311c2875c522ced5, + 0xd77485cb25823ac7,0x7d633293366b828b, + 0x86a8d39ef77164bc,0xae5dff9c02033197, + 0xa8530886b54dbdeb,0xd9f57f830283fdfc, + 0xd267caa862a12d66,0xd072df63c324fd7b, + 0x8380dea93da4bc60,0x4247cb9e59f71e6d, + 0xa46116538d0deb78,0x52d9be85f074e608, + 0xcd795be870516656,0x67902e276c921f8b, + 0x806bd9714632dff6,0xba1cd8a3db53b6, + 0xa086cfcd97bf97f3,0x80e8a40eccd228a4, + 0xc8a883c0fdaf7df0,0x6122cd128006b2cd, + 0xfad2a4b13d1b5d6c,0x796b805720085f81, + 0x9cc3a6eec6311a63,0xcbe3303674053bb0, + 0xc3f490aa77bd60fc,0xbedbfc4411068a9c, + 0xf4f1b4d515acb93b,0xee92fb5515482d44, + 0x991711052d8bf3c5,0x751bdd152d4d1c4a, + 0xbf5cd54678eef0b6,0xd262d45a78a0635d, + 0xef340a98172aace4,0x86fb897116c87c34, + 0x9580869f0e7aac0e,0xd45d35e6ae3d4da0, + 0xbae0a846d2195712,0x8974836059cca109, + 0xe998d258869facd7,0x2bd1a438703fc94b, + 0x91ff83775423cc06,0x7b6306a34627ddcf, + 0xb67f6455292cbf08,0x1a3bc84c17b1d542, + 0xe41f3d6a7377eeca,0x20caba5f1d9e4a93, + 0x8e938662882af53e,0x547eb47b7282ee9c, + 0xb23867fb2a35b28d,0xe99e619a4f23aa43, + 0xdec681f9f4c31f31,0x6405fa00e2ec94d4, + 0x8b3c113c38f9f37e,0xde83bc408dd3dd04, + 0xae0b158b4738705e,0x9624ab50b148d445, + 0xd98ddaee19068c76,0x3badd624dd9b0957, + 0x87f8a8d4cfa417c9,0xe54ca5d70a80e5d6, + 0xa9f6d30a038d1dbc,0x5e9fcf4ccd211f4c, + 0xd47487cc8470652b,0x7647c3200069671f, + 0x84c8d4dfd2c63f3b,0x29ecd9f40041e073, + 0xa5fb0a17c777cf09,0xf468107100525890, + 0xcf79cc9db955c2cc,0x7182148d4066eeb4, + 0x81ac1fe293d599bf,0xc6f14cd848405530, + 0xa21727db38cb002f,0xb8ada00e5a506a7c, + 0xca9cf1d206fdc03b,0xa6d90811f0e4851c, + 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0x924d692ca61be758,0x593c2626705f9c56, + 0xb6e0c377cfa2e12e,0x6f8b2fb00c77836c, + 0xe498f455c38b997a,0xb6dfb9c0f956447, + 0x8edf98b59a373fec,0x4724bd4189bd5eac, + 0xb2977ee300c50fe7,0x58edec91ec2cb657, + 0xdf3d5e9bc0f653e1,0x2f2967b66737e3ed, + 0x8b865b215899f46c,0xbd79e0d20082ee74, + 0xae67f1e9aec07187,0xecd8590680a3aa11, + 0xda01ee641a708de9,0xe80e6f4820cc9495, + 0x884134fe908658b2,0x3109058d147fdcdd, + 0xaa51823e34a7eede,0xbd4b46f0599fd415, + 0xd4e5e2cdc1d1ea96,0x6c9e18ac7007c91a, + 0x850fadc09923329e,0x3e2cf6bc604ddb0, + 0xa6539930bf6bff45,0x84db8346b786151c, + 0xcfe87f7cef46ff16,0xe612641865679a63, + 0x81f14fae158c5f6e,0x4fcb7e8f3f60c07e, + 0xa26da3999aef7749,0xe3be5e330f38f09d, + 0xcb090c8001ab551c,0x5cadf5bfd3072cc5, + 0xfdcb4fa002162a63,0x73d9732fc7c8f7f6, + 0x9e9f11c4014dda7e,0x2867e7fddcdd9afa, + 0xc646d63501a1511d,0xb281e1fd541501b8, + 0xf7d88bc24209a565,0x1f225a7ca91a4226, + 0x9ae757596946075f,0x3375788de9b06958, + 0xc1a12d2fc3978937,0x52d6b1641c83ae, + 0xf209787bb47d6b84,0xc0678c5dbd23a49a, + 0x9745eb4d50ce6332,0xf840b7ba963646e0, + 0xbd176620a501fbff,0xb650e5a93bc3d898, + 0xec5d3fa8ce427aff,0xa3e51f138ab4cebe, + 0x93ba47c980e98cdf,0xc66f336c36b10137, + 0xb8a8d9bbe123f017,0xb80b0047445d4184, + 0xe6d3102ad96cec1d,0xa60dc059157491e5, + 0x9043ea1ac7e41392,0x87c89837ad68db2f, + 0xb454e4a179dd1877,0x29babe4598c311fb, + 0xe16a1dc9d8545e94,0xf4296dd6fef3d67a, + 0x8ce2529e2734bb1d,0x1899e4a65f58660c, + 0xb01ae745b101e9e4,0x5ec05dcff72e7f8f, + 0xdc21a1171d42645d,0x76707543f4fa1f73, + 0x899504ae72497eba,0x6a06494a791c53a8, + 0xabfa45da0edbde69,0x487db9d17636892, + 0xd6f8d7509292d603,0x45a9d2845d3c42b6, + 0x865b86925b9bc5c2,0xb8a2392ba45a9b2, + 0xa7f26836f282b732,0x8e6cac7768d7141e, + 0xd1ef0244af2364ff,0x3207d795430cd926, + 0x8335616aed761f1f,0x7f44e6bd49e807b8, + 0xa402b9c5a8d3a6e7,0x5f16206c9c6209a6, + 0xcd036837130890a1,0x36dba887c37a8c0f, + 0x802221226be55a64,0xc2494954da2c9789, + 0xa02aa96b06deb0fd,0xf2db9baa10b7bd6c, + 0xc83553c5c8965d3d,0x6f92829494e5acc7, + 0xfa42a8b73abbf48c,0xcb772339ba1f17f9, + 0x9c69a97284b578d7,0xff2a760414536efb, + 0xc38413cf25e2d70d,0xfef5138519684aba, + 0xf46518c2ef5b8cd1,0x7eb258665fc25d69, + 0x98bf2f79d5993802,0xef2f773ffbd97a61, + 0xbeeefb584aff8603,0xaafb550ffacfd8fa, + 0xeeaaba2e5dbf6784,0x95ba2a53f983cf38, + 0x952ab45cfa97a0b2,0xdd945a747bf26183, + 0xba756174393d88df,0x94f971119aeef9e4, + 0xe912b9d1478ceb17,0x7a37cd5601aab85d, + 0x91abb422ccb812ee,0xac62e055c10ab33a, + 0xb616a12b7fe617aa,0x577b986b314d6009, + 0xe39c49765fdf9d94,0xed5a7e85fda0b80b, + 0x8e41ade9fbebc27d,0x14588f13be847307, + 0xb1d219647ae6b31c,0x596eb2d8ae258fc8, + 0xde469fbd99a05fe3,0x6fca5f8ed9aef3bb, + 0x8aec23d680043bee,0x25de7bb9480d5854, + 0xada72ccc20054ae9,0xaf561aa79a10ae6a, + 0xd910f7ff28069da4,0x1b2ba1518094da04, + 0x87aa9aff79042286,0x90fb44d2f05d0842, + 0xa99541bf57452b28,0x353a1607ac744a53, + 0xd3fa922f2d1675f2,0x42889b8997915ce8, + 0x847c9b5d7c2e09b7,0x69956135febada11, + 0xa59bc234db398c25,0x43fab9837e699095, + 0xcf02b2c21207ef2e,0x94f967e45e03f4bb, + 0x8161afb94b44f57d,0x1d1be0eebac278f5, + 0xa1ba1ba79e1632dc,0x6462d92a69731732, + 0xca28a291859bbf93,0x7d7b8f7503cfdcfe, + 0xfcb2cb35e702af78,0x5cda735244c3d43e, + 0x9defbf01b061adab,0x3a0888136afa64a7, + 0xc56baec21c7a1916,0x88aaa1845b8fdd0, + 0xf6c69a72a3989f5b,0x8aad549e57273d45, + 0x9a3c2087a63f6399,0x36ac54e2f678864b, + 0xc0cb28a98fcf3c7f,0x84576a1bb416a7dd, + 0xf0fdf2d3f3c30b9f,0x656d44a2a11c51d5, + 0x969eb7c47859e743,0x9f644ae5a4b1b325, + 0xbc4665b596706114,0x873d5d9f0dde1fee, + 0xeb57ff22fc0c7959,0xa90cb506d155a7ea, + 0x9316ff75dd87cbd8,0x9a7f12442d588f2, + 0xb7dcbf5354e9bece,0xc11ed6d538aeb2f, + 0xe5d3ef282a242e81,0x8f1668c8a86da5fa, + 0x8fa475791a569d10,0xf96e017d694487bc, + 0xb38d92d760ec4455,0x37c981dcc395a9ac, + 0xe070f78d3927556a,0x85bbe253f47b1417, + 0x8c469ab843b89562,0x93956d7478ccec8e, + 0xaf58416654a6babb,0x387ac8d1970027b2, + 0xdb2e51bfe9d0696a,0x6997b05fcc0319e, + 0x88fcf317f22241e2,0x441fece3bdf81f03, + 0xab3c2fddeeaad25a,0xd527e81cad7626c3, + 0xd60b3bd56a5586f1,0x8a71e223d8d3b074, + 0x85c7056562757456,0xf6872d5667844e49, + 0xa738c6bebb12d16c,0xb428f8ac016561db, + 0xd106f86e69d785c7,0xe13336d701beba52, + 0x82a45b450226b39c,0xecc0024661173473, + 0xa34d721642b06084,0x27f002d7f95d0190, + 0xcc20ce9bd35c78a5,0x31ec038df7b441f4, + 0xff290242c83396ce,0x7e67047175a15271, + 0x9f79a169bd203e41,0xf0062c6e984d386, + 0xc75809c42c684dd1,0x52c07b78a3e60868, + 0xf92e0c3537826145,0xa7709a56ccdf8a82, + 0x9bbcc7a142b17ccb,0x88a66076400bb691, + 0xc2abf989935ddbfe,0x6acff893d00ea435, + 0xf356f7ebf83552fe,0x583f6b8c4124d43, + 0x98165af37b2153de,0xc3727a337a8b704a, + 0xbe1bf1b059e9a8d6,0x744f18c0592e4c5c, + 0xeda2ee1c7064130c,0x1162def06f79df73, + 0x9485d4d1c63e8be7,0x8addcb5645ac2ba8, + 0xb9a74a0637ce2ee1,0x6d953e2bd7173692, + 0xe8111c87c5c1ba99,0xc8fa8db6ccdd0437, + 0x910ab1d4db9914a0,0x1d9c9892400a22a2, + 0xb54d5e4a127f59c8,0x2503beb6d00cab4b, + 0xe2a0b5dc971f303a,0x2e44ae64840fd61d, + 0x8da471a9de737e24,0x5ceaecfed289e5d2, + 0xb10d8e1456105dad,0x7425a83e872c5f47, + 0xdd50f1996b947518,0xd12f124e28f77719, + 0x8a5296ffe33cc92f,0x82bd6b70d99aaa6f, + 0xace73cbfdc0bfb7b,0x636cc64d1001550b, + 0xd8210befd30efa5a,0x3c47f7e05401aa4e, + 0x8714a775e3e95c78,0x65acfaec34810a71, + 0xa8d9d1535ce3b396,0x7f1839a741a14d0d, + 0xd31045a8341ca07c,0x1ede48111209a050, + 0x83ea2b892091e44d,0x934aed0aab460432, + 0xa4e4b66b68b65d60,0xf81da84d5617853f, + 0xce1de40642e3f4b9,0x36251260ab9d668e, + 0x80d2ae83e9ce78f3,0xc1d72b7c6b426019, + 0xa1075a24e4421730,0xb24cf65b8612f81f, + 0xc94930ae1d529cfc,0xdee033f26797b627, + 0xfb9b7cd9a4a7443c,0x169840ef017da3b1, + 0x9d412e0806e88aa5,0x8e1f289560ee864e, + 0xc491798a08a2ad4e,0xf1a6f2bab92a27e2, + 0xf5b5d7ec8acb58a2,0xae10af696774b1db, + 0x9991a6f3d6bf1765,0xacca6da1e0a8ef29, + 0xbff610b0cc6edd3f,0x17fd090a58d32af3, + 0xeff394dcff8a948e,0xddfc4b4cef07f5b0, + 0x95f83d0a1fb69cd9,0x4abdaf101564f98e, + 0xbb764c4ca7a4440f,0x9d6d1ad41abe37f1, + 0xea53df5fd18d5513,0x84c86189216dc5ed, + 0x92746b9be2f8552c,0x32fd3cf5b4e49bb4, + 0xb7118682dbb66a77,0x3fbc8c33221dc2a1, + 0xe4d5e82392a40515,0xfabaf3feaa5334a, + 0x8f05b1163ba6832d,0x29cb4d87f2a7400e, + 0xb2c71d5bca9023f8,0x743e20e9ef511012, + 0xdf78e4b2bd342cf6,0x914da9246b255416, + 0x8bab8eefb6409c1a,0x1ad089b6c2f7548e, + 0xae9672aba3d0c320,0xa184ac2473b529b1, + 0xda3c0f568cc4f3e8,0xc9e5d72d90a2741e, + 0x8865899617fb1871,0x7e2fa67c7a658892, + 0xaa7eebfb9df9de8d,0xddbb901b98feeab7, + 0xd51ea6fa85785631,0x552a74227f3ea565, + 0x8533285c936b35de,0xd53a88958f87275f, + 0xa67ff273b8460356,0x8a892abaf368f137, + 0xd01fef10a657842c,0x2d2b7569b0432d85, + 0x8213f56a67f6b29b,0x9c3b29620e29fc73, + 0xa298f2c501f45f42,0x8349f3ba91b47b8f, + 0xcb3f2f7642717713,0x241c70a936219a73, + 0xfe0efb53d30dd4d7,0xed238cd383aa0110, + 0x9ec95d1463e8a506,0xf4363804324a40aa, + 0xc67bb4597ce2ce48,0xb143c6053edcd0d5, + 0xf81aa16fdc1b81da,0xdd94b7868e94050a, + 0x9b10a4e5e9913128,0xca7cf2b4191c8326, + 0xc1d4ce1f63f57d72,0xfd1c2f611f63a3f0, + 0xf24a01a73cf2dccf,0xbc633b39673c8cec, + 0x976e41088617ca01,0xd5be0503e085d813, + 0xbd49d14aa79dbc82,0x4b2d8644d8a74e18, + 0xec9c459d51852ba2,0xddf8e7d60ed1219e, + 0x93e1ab8252f33b45,0xcabb90e5c942b503, + 0xb8da1662e7b00a17,0x3d6a751f3b936243, + 0xe7109bfba19c0c9d,0xcc512670a783ad4, + 0x906a617d450187e2,0x27fb2b80668b24c5, + 0xb484f9dc9641e9da,0xb1f9f660802dedf6, + 0xe1a63853bbd26451,0x5e7873f8a0396973, + 0x8d07e33455637eb2,0xdb0b487b6423e1e8, + 0xb049dc016abc5e5f,0x91ce1a9a3d2cda62, + 0xdc5c5301c56b75f7,0x7641a140cc7810fb, + 0x89b9b3e11b6329ba,0xa9e904c87fcb0a9d, + 0xac2820d9623bf429,0x546345fa9fbdcd44, + 0xd732290fbacaf133,0xa97c177947ad4095, + 0x867f59a9d4bed6c0,0x49ed8eabcccc485d, + 0xa81f301449ee8c70,0x5c68f256bfff5a74, + 0xd226fc195c6a2f8c,0x73832eec6fff3111, + 0x83585d8fd9c25db7,0xc831fd53c5ff7eab, + 0xa42e74f3d032f525,0xba3e7ca8b77f5e55, + 0xcd3a1230c43fb26f,0x28ce1bd2e55f35eb, + 0x80444b5e7aa7cf85,0x7980d163cf5b81b3, + 0xa0555e361951c366,0xd7e105bcc332621f, + 0xc86ab5c39fa63440,0x8dd9472bf3fefaa7, + 0xfa856334878fc150,0xb14f98f6f0feb951, + 0x9c935e00d4b9d8d2,0x6ed1bf9a569f33d3, + 0xc3b8358109e84f07,0xa862f80ec4700c8, + 0xf4a642e14c6262c8,0xcd27bb612758c0fa, + 0x98e7e9cccfbd7dbd,0x8038d51cb897789c, + 0xbf21e44003acdd2c,0xe0470a63e6bd56c3, + 0xeeea5d5004981478,0x1858ccfce06cac74, + 0x95527a5202df0ccb,0xf37801e0c43ebc8, + 0xbaa718e68396cffd,0xd30560258f54e6ba, + 0xe950df20247c83fd,0x47c6b82ef32a2069, + 0x91d28b7416cdd27e,0x4cdc331d57fa5441, + 0xb6472e511c81471d,0xe0133fe4adf8e952, + 0xe3d8f9e563a198e5,0x58180fddd97723a6, + 0x8e679c2f5e44ff8f,0x570f09eaa7ea7648,}; }; template -const uint64_t powers_template::power_of_five_128[number_of_entries] = { - 0xeef453d6923bd65a,0x113faa2906a13b3f, - 0x9558b4661b6565f8,0x4ac7ca59a424c507, - 0xbaaee17fa23ebf76,0x5d79bcf00d2df649, - 0xe95a99df8ace6f53,0xf4d82c2c107973dc, - 0x91d8a02bb6c10594,0x79071b9b8a4be869, - 0xb64ec836a47146f9,0x9748e2826cdee284, - 0xe3e27a444d8d98b7,0xfd1b1b2308169b25, - 0x8e6d8c6ab0787f72,0xfe30f0f5e50e20f7, - 0xb208ef855c969f4f,0xbdbd2d335e51a935, - 0xde8b2b66b3bc4723,0xad2c788035e61382, - 0x8b16fb203055ac76,0x4c3bcb5021afcc31, - 0xaddcb9e83c6b1793,0xdf4abe242a1bbf3d, - 0xd953e8624b85dd78,0xd71d6dad34a2af0d, - 0x87d4713d6f33aa6b,0x8672648c40e5ad68, - 0xa9c98d8ccb009506,0x680efdaf511f18c2, - 0xd43bf0effdc0ba48,0x212bd1b2566def2, - 0x84a57695fe98746d,0x14bb630f7604b57, - 0xa5ced43b7e3e9188,0x419ea3bd35385e2d, - 0xcf42894a5dce35ea,0x52064cac828675b9, - 0x818995ce7aa0e1b2,0x7343efebd1940993, - 0xa1ebfb4219491a1f,0x1014ebe6c5f90bf8, - 0xca66fa129f9b60a6,0xd41a26e077774ef6, - 0xfd00b897478238d0,0x8920b098955522b4, - 0x9e20735e8cb16382,0x55b46e5f5d5535b0, - 0xc5a890362fddbc62,0xeb2189f734aa831d, - 0xf712b443bbd52b7b,0xa5e9ec7501d523e4, - 0x9a6bb0aa55653b2d,0x47b233c92125366e, - 0xc1069cd4eabe89f8,0x999ec0bb696e840a, - 0xf148440a256e2c76,0xc00670ea43ca250d, - 0x96cd2a865764dbca,0x380406926a5e5728, - 0xbc807527ed3e12bc,0xc605083704f5ecf2, - 0xeba09271e88d976b,0xf7864a44c633682e, - 0x93445b8731587ea3,0x7ab3ee6afbe0211d, - 0xb8157268fdae9e4c,0x5960ea05bad82964, - 0xe61acf033d1a45df,0x6fb92487298e33bd, - 0x8fd0c16206306bab,0xa5d3b6d479f8e056, - 0xb3c4f1ba87bc8696,0x8f48a4899877186c, - 0xe0b62e2929aba83c,0x331acdabfe94de87, - 0x8c71dcd9ba0b4925,0x9ff0c08b7f1d0b14, - 0xaf8e5410288e1b6f,0x7ecf0ae5ee44dd9, - 0xdb71e91432b1a24a,0xc9e82cd9f69d6150, - 0x892731ac9faf056e,0xbe311c083a225cd2, - 0xab70fe17c79ac6ca,0x6dbd630a48aaf406, - 0xd64d3d9db981787d,0x92cbbccdad5b108, - 0x85f0468293f0eb4e,0x25bbf56008c58ea5, - 0xa76c582338ed2621,0xaf2af2b80af6f24e, - 0xd1476e2c07286faa,0x1af5af660db4aee1, - 0x82cca4db847945ca,0x50d98d9fc890ed4d, - 0xa37fce126597973c,0xe50ff107bab528a0, - 0xcc5fc196fefd7d0c,0x1e53ed49a96272c8, - 0xff77b1fcbebcdc4f,0x25e8e89c13bb0f7a, - 0x9faacf3df73609b1,0x77b191618c54e9ac, - 0xc795830d75038c1d,0xd59df5b9ef6a2417, - 0xf97ae3d0d2446f25,0x4b0573286b44ad1d, - 0x9becce62836ac577,0x4ee367f9430aec32, - 0xc2e801fb244576d5,0x229c41f793cda73f, - 0xf3a20279ed56d48a,0x6b43527578c1110f, - 0x9845418c345644d6,0x830a13896b78aaa9, - 0xbe5691ef416bd60c,0x23cc986bc656d553, - 0xedec366b11c6cb8f,0x2cbfbe86b7ec8aa8, - 0x94b3a202eb1c3f39,0x7bf7d71432f3d6a9, - 0xb9e08a83a5e34f07,0xdaf5ccd93fb0cc53, - 0xe858ad248f5c22c9,0xd1b3400f8f9cff68, - 0x91376c36d99995be,0x23100809b9c21fa1, - 0xb58547448ffffb2d,0xabd40a0c2832a78a, - 0xe2e69915b3fff9f9,0x16c90c8f323f516c, - 0x8dd01fad907ffc3b,0xae3da7d97f6792e3, - 0xb1442798f49ffb4a,0x99cd11cfdf41779c, - 0xdd95317f31c7fa1d,0x40405643d711d583, - 0x8a7d3eef7f1cfc52,0x482835ea666b2572, - 0xad1c8eab5ee43b66,0xda3243650005eecf, - 0xd863b256369d4a40,0x90bed43e40076a82, - 0x873e4f75e2224e68,0x5a7744a6e804a291, - 0xa90de3535aaae202,0x711515d0a205cb36, - 0xd3515c2831559a83,0xd5a5b44ca873e03, - 0x8412d9991ed58091,0xe858790afe9486c2, - 0xa5178fff668ae0b6,0x626e974dbe39a872, - 0xce5d73ff402d98e3,0xfb0a3d212dc8128f, - 0x80fa687f881c7f8e,0x7ce66634bc9d0b99, - 0xa139029f6a239f72,0x1c1fffc1ebc44e80, - 0xc987434744ac874e,0xa327ffb266b56220, - 0xfbe9141915d7a922,0x4bf1ff9f0062baa8, - 0x9d71ac8fada6c9b5,0x6f773fc3603db4a9, - 0xc4ce17b399107c22,0xcb550fb4384d21d3, - 0xf6019da07f549b2b,0x7e2a53a146606a48, - 0x99c102844f94e0fb,0x2eda7444cbfc426d, - 0xc0314325637a1939,0xfa911155fefb5308, - 0xf03d93eebc589f88,0x793555ab7eba27ca, - 0x96267c7535b763b5,0x4bc1558b2f3458de, - 0xbbb01b9283253ca2,0x9eb1aaedfb016f16, - 0xea9c227723ee8bcb,0x465e15a979c1cadc, - 0x92a1958a7675175f,0xbfacd89ec191ec9, - 0xb749faed14125d36,0xcef980ec671f667b, - 0xe51c79a85916f484,0x82b7e12780e7401a, - 0x8f31cc0937ae58d2,0xd1b2ecb8b0908810, - 0xb2fe3f0b8599ef07,0x861fa7e6dcb4aa15, - 0xdfbdcece67006ac9,0x67a791e093e1d49a, - 0x8bd6a141006042bd,0xe0c8bb2c5c6d24e0, - 0xaecc49914078536d,0x58fae9f773886e18, - 0xda7f5bf590966848,0xaf39a475506a899e, - 0x888f99797a5e012d,0x6d8406c952429603, - 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0x8f05b1163ba6832d,0x29cb4d87f2a7400e, - 0xb2c71d5bca9023f8,0x743e20e9ef511012, - 0xdf78e4b2bd342cf6,0x914da9246b255416, - 0x8bab8eefb6409c1a,0x1ad089b6c2f7548e, - 0xae9672aba3d0c320,0xa184ac2473b529b1, - 0xda3c0f568cc4f3e8,0xc9e5d72d90a2741e, - 0x8865899617fb1871,0x7e2fa67c7a658892, - 0xaa7eebfb9df9de8d,0xddbb901b98feeab7, - 0xd51ea6fa85785631,0x552a74227f3ea565, - 0x8533285c936b35de,0xd53a88958f87275f, - 0xa67ff273b8460356,0x8a892abaf368f137, - 0xd01fef10a657842c,0x2d2b7569b0432d85, - 0x8213f56a67f6b29b,0x9c3b29620e29fc73, - 0xa298f2c501f45f42,0x8349f3ba91b47b8f, - 0xcb3f2f7642717713,0x241c70a936219a73, - 0xfe0efb53d30dd4d7,0xed238cd383aa0110, - 0x9ec95d1463e8a506,0xf4363804324a40aa, - 0xc67bb4597ce2ce48,0xb143c6053edcd0d5, - 0xf81aa16fdc1b81da,0xdd94b7868e94050a, - 0x9b10a4e5e9913128,0xca7cf2b4191c8326, - 0xc1d4ce1f63f57d72,0xfd1c2f611f63a3f0, - 0xf24a01a73cf2dccf,0xbc633b39673c8cec, - 0x976e41088617ca01,0xd5be0503e085d813, - 0xbd49d14aa79dbc82,0x4b2d8644d8a74e18, - 0xec9c459d51852ba2,0xddf8e7d60ed1219e, - 0x93e1ab8252f33b45,0xcabb90e5c942b503, - 0xb8da1662e7b00a17,0x3d6a751f3b936243, - 0xe7109bfba19c0c9d,0xcc512670a783ad4, - 0x906a617d450187e2,0x27fb2b80668b24c5, - 0xb484f9dc9641e9da,0xb1f9f660802dedf6, - 0xe1a63853bbd26451,0x5e7873f8a0396973, - 0x8d07e33455637eb2,0xdb0b487b6423e1e8, - 0xb049dc016abc5e5f,0x91ce1a9a3d2cda62, - 0xdc5c5301c56b75f7,0x7641a140cc7810fb, - 0x89b9b3e11b6329ba,0xa9e904c87fcb0a9d, - 0xac2820d9623bf429,0x546345fa9fbdcd44, - 0xd732290fbacaf133,0xa97c177947ad4095, - 0x867f59a9d4bed6c0,0x49ed8eabcccc485d, - 0xa81f301449ee8c70,0x5c68f256bfff5a74, - 0xd226fc195c6a2f8c,0x73832eec6fff3111, - 0x83585d8fd9c25db7,0xc831fd53c5ff7eab, - 0xa42e74f3d032f525,0xba3e7ca8b77f5e55, - 0xcd3a1230c43fb26f,0x28ce1bd2e55f35eb, - 0x80444b5e7aa7cf85,0x7980d163cf5b81b3, - 0xa0555e361951c366,0xd7e105bcc332621f, - 0xc86ab5c39fa63440,0x8dd9472bf3fefaa7, - 0xfa856334878fc150,0xb14f98f6f0feb951, - 0x9c935e00d4b9d8d2,0x6ed1bf9a569f33d3, - 0xc3b8358109e84f07,0xa862f80ec4700c8, - 0xf4a642e14c6262c8,0xcd27bb612758c0fa, - 0x98e7e9cccfbd7dbd,0x8038d51cb897789c, - 0xbf21e44003acdd2c,0xe0470a63e6bd56c3, - 0xeeea5d5004981478,0x1858ccfce06cac74, - 0x95527a5202df0ccb,0xf37801e0c43ebc8, - 0xbaa718e68396cffd,0xd30560258f54e6ba, - 0xe950df20247c83fd,0x47c6b82ef32a2069, - 0x91d28b7416cdd27e,0x4cdc331d57fa5441, - 0xb6472e511c81471d,0xe0133fe4adf8e952, - 0xe3d8f9e563a198e5,0x58180fddd97723a6, - 0x8e679c2f5e44ff8f,0x570f09eaa7ea7648,}; +constexpr uint64_t powers_template::power_of_five_128[number_of_entries]; + using powers = powers_template<>; -} +} // namespace fast_float } // namespace arrow_vendored #endif diff --git a/cpp/src/arrow/vendored/fast_float/float_common.h b/cpp/src/arrow/vendored/fast_float/float_common.h index 0d6bfe7efb88b..717320126750c 100644 --- a/cpp/src/arrow/vendored/fast_float/float_common.h +++ b/cpp/src/arrow/vendored/fast_float/float_common.h @@ -7,6 +7,25 @@ #include #include +#ifdef __has_include +#if __has_include() +#include +#endif +#endif + +#if __cpp_lib_bit_cast >= 201806L +#include +#define FASTFLOAT_HAS_BIT_CAST 1 +#else +#define FASTFLOAT_HAS_BIT_CAST 0 +#endif + +#if __cpp_lib_is_constant_evaluated >= 201811L +#define FASTFLOAT_HAS_IS_CONSTANT_EVALUATED 1 +#else +#define FASTFLOAT_HAS_IS_CONSTANT_EVALUATED 0 +#endif + #if (defined(__x86_64) || defined(__x86_64__) || defined(_M_X64) \ || defined(__amd64) || defined(__aarch64__) || defined(_M_ARM64) \ || defined(__MINGW64__) \ @@ -14,7 +33,7 @@ || (defined(__ppc64__) || defined(__PPC64__) || defined(__ppc64le__) || defined(__PPC64LE__)) ) #define FASTFLOAT_64BIT 1 #elif (defined(__i386) || defined(__i386__) || defined(_M_IX86) \ - || defined(__arm__) || defined(_M_ARM) \ + || defined(__arm__) || defined(_M_ARM) || defined(__ppc__) \ || defined(__MINGW32__) || defined(__EMSCRIPTEN__)) #define FASTFLOAT_32BIT 1 #else @@ -50,7 +69,11 @@ #elif defined(sun) || defined(__sun) #include #else +#ifdef __has_include +#if __has_include() #include +#endif //__has_include() +#endif //__has_include #endif # #ifndef __BYTE_ORDER__ @@ -77,23 +100,46 @@ #endif #ifndef FASTFLOAT_ASSERT -#define FASTFLOAT_ASSERT(x) { if (!(x)) abort(); } +#define FASTFLOAT_ASSERT(x) { ((void)(x)); } #endif #ifndef FASTFLOAT_DEBUG_ASSERT -#include -#define FASTFLOAT_DEBUG_ASSERT(x) assert(x) +#define FASTFLOAT_DEBUG_ASSERT(x) { ((void)(x)); } #endif // rust style `try!()` macro, or `?` operator #define FASTFLOAT_TRY(x) { if (!(x)) return false; } +// Testing for https://wg21.link/N3652, adopted in C++14 +#if __cpp_constexpr >= 201304 +#define FASTFLOAT_CONSTEXPR14 constexpr +#else +#define FASTFLOAT_CONSTEXPR14 +#endif + +// Testing for relevant C++20 constexpr library features +#if FASTFLOAT_HAS_IS_CONSTANT_EVALUATED \ + && FASTFLOAT_HAS_BIT_CAST \ + && __cpp_lib_constexpr_algorithms >= 201806L /*For std::copy and std::fill*/ +#define FASTFLOAT_CONSTEXPR20 constexpr +#else +#define FASTFLOAT_CONSTEXPR20 +#endif + namespace arrow_vendored { namespace fast_float { +fastfloat_really_inline constexpr bool cpp20_and_in_constexpr() { +#if FASTFLOAT_HAS_IS_CONSTANT_EVALUATED + return std::is_constant_evaluated(); +#else + return false; +#endif +} + // Compares two ASCII strings in a case insensitive manner. -inline bool fastfloat_strncasecmp(const char *input1, const char *input2, - size_t length) { +inline FASTFLOAT_CONSTEXPR14 bool +fastfloat_strncasecmp(const char *input1, const char *input2, size_t length) { char running_diff{0}; for (size_t i = 0; i < length; i++) { running_diff |= (input1[i] ^ input2[i]); @@ -110,14 +156,14 @@ template struct span { const T* ptr; size_t length; - span(const T* _ptr, size_t _length) : ptr(_ptr), length(_length) {} - span() : ptr(nullptr), length(0) {} + constexpr span(const T* _ptr, size_t _length) : ptr(_ptr), length(_length) {} + constexpr span() : ptr(nullptr), length(0) {} constexpr size_t len() const noexcept { return length; } - const T& operator[](size_t index) const noexcept { + FASTFLOAT_CONSTEXPR14 const T& operator[](size_t index) const noexcept { FASTFLOAT_DEBUG_ASSERT(index < length); return ptr[index]; } @@ -126,13 +172,31 @@ struct span { struct value128 { uint64_t low; uint64_t high; - value128(uint64_t _low, uint64_t _high) : low(_low), high(_high) {} - value128() : low(0), high(0) {} + constexpr value128(uint64_t _low, uint64_t _high) : low(_low), high(_high) {} + constexpr value128() : low(0), high(0) {} }; +/* Helper C++11 constexpr generic implementation of leading_zeroes */ +fastfloat_really_inline constexpr +int leading_zeroes_generic(uint64_t input_num, int last_bit = 0) { + return ( + ((input_num & uint64_t(0xffffffff00000000)) && (input_num >>= 32, last_bit |= 32)), + ((input_num & uint64_t( 0xffff0000)) && (input_num >>= 16, last_bit |= 16)), + ((input_num & uint64_t( 0xff00)) && (input_num >>= 8, last_bit |= 8)), + ((input_num & uint64_t( 0xf0)) && (input_num >>= 4, last_bit |= 4)), + ((input_num & uint64_t( 0xc)) && (input_num >>= 2, last_bit |= 2)), + ((input_num & uint64_t( 0x2)) && (input_num >>= 1, last_bit |= 1)), + 63 - last_bit + ); +} + /* result might be undefined when input_num is zero */ -fastfloat_really_inline int leading_zeroes(uint64_t input_num) { +fastfloat_really_inline FASTFLOAT_CONSTEXPR20 +int leading_zeroes(uint64_t input_num) { assert(input_num > 0); + if (cpp20_and_in_constexpr()) { + return leading_zeroes_generic(input_num); + } #ifdef FASTFLOAT_VISUAL_STUDIO #if defined(_M_X64) || defined(_M_ARM64) unsigned long leading_zero = 0; @@ -141,31 +205,20 @@ fastfloat_really_inline int leading_zeroes(uint64_t input_num) { _BitScanReverse64(&leading_zero, input_num); return (int)(63 - leading_zero); #else - int last_bit = 0; - if(input_num & uint64_t(0xffffffff00000000)) input_num >>= 32, last_bit |= 32; - if(input_num & uint64_t( 0xffff0000)) input_num >>= 16, last_bit |= 16; - if(input_num & uint64_t( 0xff00)) input_num >>= 8, last_bit |= 8; - if(input_num & uint64_t( 0xf0)) input_num >>= 4, last_bit |= 4; - if(input_num & uint64_t( 0xc)) input_num >>= 2, last_bit |= 2; - if(input_num & uint64_t( 0x2)) input_num >>= 1, last_bit |= 1; - return 63 - last_bit; + return leading_zeroes_generic(input_num); #endif #else return __builtin_clzll(input_num); #endif } -#ifdef FASTFLOAT_32BIT - // slow emulation routine for 32-bit -fastfloat_really_inline uint64_t emulu(uint32_t x, uint32_t y) { +fastfloat_really_inline constexpr uint64_t emulu(uint32_t x, uint32_t y) { return x * (uint64_t)y; } -// slow emulation routine for 32-bit -#if !defined(__MINGW64__) -fastfloat_really_inline uint64_t _umul128(uint64_t ab, uint64_t cd, - uint64_t *hi) { +fastfloat_really_inline FASTFLOAT_CONSTEXPR14 +uint64_t umul128_generic(uint64_t ab, uint64_t cd, uint64_t *hi) { uint64_t ad = emulu((uint32_t)(ab >> 32), (uint32_t)cd); uint64_t bd = emulu((uint32_t)ab, (uint32_t)cd); uint64_t adbc = ad + emulu((uint32_t)ab, (uint32_t)(cd >> 32)); @@ -175,14 +228,28 @@ fastfloat_really_inline uint64_t _umul128(uint64_t ab, uint64_t cd, (adbc_carry << 32) + !!(lo < bd); return lo; } + +#ifdef FASTFLOAT_32BIT + +// slow emulation routine for 32-bit +#if !defined(__MINGW64__) +fastfloat_really_inline FASTFLOAT_CONSTEXPR14 +uint64_t _umul128(uint64_t ab, uint64_t cd, uint64_t *hi) { + return umul128_generic(ab, cd, hi); +} #endif // !__MINGW64__ #endif // FASTFLOAT_32BIT // compute 64-bit a*b -fastfloat_really_inline value128 full_multiplication(uint64_t a, - uint64_t b) { +fastfloat_really_inline FASTFLOAT_CONSTEXPR20 +value128 full_multiplication(uint64_t a, uint64_t b) { + if (cpp20_and_in_constexpr()) { + value128 answer; + answer.low = umul128_generic(a, b, &answer.high); + return answer; + } value128 answer; #if defined(_M_ARM64) && !defined(__MINGW32__) // ARM64 has native support for 64-bit multiplications, no need to emulate @@ -196,7 +263,7 @@ fastfloat_really_inline value128 full_multiplication(uint64_t a, answer.low = uint64_t(r); answer.high = uint64_t(r >> 64); #else - #error Not implemented + answer.low = umul128_generic(a, b, &answer.high); #endif return answer; } @@ -205,10 +272,10 @@ struct adjusted_mantissa { uint64_t mantissa{0}; int32_t power2{0}; // a negative value indicates an invalid result adjusted_mantissa() = default; - bool operator==(const adjusted_mantissa &o) const { + constexpr bool operator==(const adjusted_mantissa &o) const { return mantissa == o.mantissa && power2 == o.power2; } - bool operator!=(const adjusted_mantissa &o) const { + constexpr bool operator!=(const adjusted_mantissa &o) const { return mantissa != o.mantissa || power2 != o.power2; } }; @@ -219,8 +286,8 @@ constexpr static int32_t invalid_am_bias = -0x8000; constexpr static double powers_of_ten_double[] = { 1e0, 1e1, 1e2, 1e3, 1e4, 1e5, 1e6, 1e7, 1e8, 1e9, 1e10, 1e11, 1e12, 1e13, 1e14, 1e15, 1e16, 1e17, 1e18, 1e19, 1e20, 1e21, 1e22}; -constexpr static float powers_of_ten_float[] = {1e0, 1e1, 1e2, 1e3, 1e4, 1e5, - 1e6, 1e7, 1e8, 1e9, 1e10}; +constexpr static float powers_of_ten_float[] = {1e0f, 1e1f, 1e2f, 1e3f, 1e4f, 1e5f, + 1e6f, 1e7f, 1e8f, 1e9f, 1e10f}; // used for max_mantissa_double and max_mantissa_float constexpr uint64_t constant_55555 = 5 * 5 * 5 * 5 * 5; // Largest integer value v so that (5**index * v) <= 1<<53. @@ -433,23 +500,41 @@ template <> inline constexpr binary_format::equiv_uint } template -fastfloat_really_inline void to_float(bool negative, adjusted_mantissa am, T &value) { - uint64_t word = am.mantissa; - word |= uint64_t(am.power2) << binary_format::mantissa_explicit_bits(); - word = negative - ? word | (uint64_t(1) << binary_format::sign_index()) : word; -#if FASTFLOAT_IS_BIG_ENDIAN == 1 - if (std::is_same::value) { - ::memcpy(&value, (char *)&word + 4, sizeof(T)); // extract value at offset 4-7 if float on big-endian - } else { - ::memcpy(&value, &word, sizeof(T)); - } +fastfloat_really_inline FASTFLOAT_CONSTEXPR20 +void to_float(bool negative, adjusted_mantissa am, T &value) { + using uint = typename binary_format::equiv_uint; + uint word = (uint)am.mantissa; + word |= uint(am.power2) << binary_format::mantissa_explicit_bits(); + word |= uint(negative) << binary_format::sign_index(); +#if FASTFLOAT_HAS_BIT_CAST + value = std::bit_cast(word); #else - // For little-endian systems: - ::memcpy(&value, &word, sizeof(T)); + ::memcpy(&value, &word, sizeof(T)); #endif } +#if FASTFLOAT_SKIP_WHITE_SPACE // disabled by default +template +struct space_lut { + static constexpr bool value[] = { + 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; +}; + +template +constexpr bool space_lut::value[]; + +inline constexpr bool is_space(uint8_t c) { return space_lut<>::value[c]; } +#endif } // namespace fast_float } // namespace arrow_vendored diff --git a/cpp/src/arrow/vendored/fast_float/parse_number.h b/cpp/src/arrow/vendored/fast_float/parse_number.h index e1c9603aeaa94..905d614c9db29 100644 --- a/cpp/src/arrow/vendored/fast_float/parse_number.h +++ b/cpp/src/arrow/vendored/fast_float/parse_number.h @@ -30,6 +30,11 @@ from_chars_result parse_infnan(const char *first, const char *last, T &value) n minusSign = true; ++first; } +#if FASTFLOAT_ALLOWS_LEADING_PLUS // disabled by default + if (*first == '+') { + ++first; + } +#endif if (last - first >= 3) { if (fastfloat_strncasecmp(first, "nan", 3)) { answer.ptr = (first += 3); @@ -67,6 +72,10 @@ from_chars_result parse_infnan(const char *first, const char *last, T &value) n * Credit : @mwalcott3 */ fastfloat_really_inline bool rounds_to_nearest() noexcept { + // https://lemire.me/blog/2020/06/26/gcc-not-nearest/ +#if (FLT_EVAL_METHOD != 1) && (FLT_EVAL_METHOD != 0) + return false; +#endif // See // A fast function to check your floating-point rounding mode // https://lemire.me/blog/2022/11/16/a-fast-function-to-check-your-floating-point-rounding-mode/ @@ -100,7 +109,25 @@ fastfloat_really_inline bool rounds_to_nearest() noexcept { // // Note: This may fail to be accurate if fast-math has been // enabled, as rounding conventions may not apply. + #if FASTFLOAT_VISUAL_STUDIO + # pragma warning(push) + // todo: is there a VS warning? + // see https://stackoverflow.com/questions/46079446/is-there-a-warning-for-floating-point-equality-checking-in-visual-studio-2013 + #elif defined(__clang__) + # pragma clang diagnostic push + # pragma clang diagnostic ignored "-Wfloat-equal" + #elif defined(__GNUC__) + # pragma GCC diagnostic push + # pragma GCC diagnostic ignored "-Wfloat-equal" + #endif return (fmini + 1.0f == 1.0f - fmini); + #if FASTFLOAT_VISUAL_STUDIO + # pragma warning(pop) + #elif defined(__clang__) + # pragma clang diagnostic pop + #elif defined(__GNUC__) + # pragma GCC diagnostic pop + #endif } } // namespace detail @@ -119,6 +146,11 @@ from_chars_result from_chars_advanced(const char *first, const char *last, from_chars_result answer; +#if FASTFLOAT_SKIP_WHITE_SPACE // disabled by default + while ((first != last) && fast_float::is_space(uint8_t(*first))) { + first++; + } +#endif if (first == last) { answer.ec = std::errc::invalid_argument; answer.ptr = first; diff --git a/cpp/src/arrow/vendored/fast_float/update.sh b/cpp/src/arrow/vendored/fast_float/update.sh index ab6e9515da5d8..f0e2d3dc508c5 100755 --- a/cpp/src/arrow/vendored/fast_float/update.sh +++ b/cpp/src/arrow/vendored/fast_float/update.sh @@ -23,7 +23,7 @@ source_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)" if [ "$#" -ne 1 ]; then echo "Usage: $0 VERSION" - echo " e.g.: $0 3.8.1" + echo " e.g.: $0 3.10.1" exit 1 fi