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/* Formatting library for C++ Copyright (c) 2012 - present, Victor Zverovich Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. --- Optional exception to the license --- As an exception, if, as a result of your compiling your source code, portions of this Software are embedded into a machine-executable object form of such source code, you may redistribute such embedded portions in such object form without including the above copyright and permission notices. */ #ifndef FMT_FORMAT_H_ #define FMT_FORMAT_H_ #include <cmath> // std::signbit #include <cstdint> // uint32_t #include <cstring> // std::memcpy #include <limits> // std::numeric_limits #include <memory> // std::uninitialized_copy #include <stdexcept> // std::runtime_error #include <system_error> // std::system_error #ifdef __cpp_lib_bit_cast # include <bit> // std::bitcast #endif #include "core.h" #if FMT_GCC_VERSION # define FMT_GCC_VISIBILITY_HIDDEN __attribute__((visibility("hidden"))) #else # define FMT_GCC_VISIBILITY_HIDDEN #endif #ifdef __NVCC__ # define FMT_CUDA_VERSION (__CUDACC_VER_MAJOR__ * 100 + __CUDACC_VER_MINOR__) #else # define FMT_CUDA_VERSION 0 #endif #ifdef __has_builtin # define FMT_HAS_BUILTIN(x) __has_builtin(x) #else # define FMT_HAS_BUILTIN(x) 0 #endif #if FMT_GCC_VERSION || FMT_CLANG_VERSION # define FMT_NOINLINE __attribute__((noinline)) #else # define FMT_NOINLINE #endif #if FMT_MSC_VERSION # define FMT_MSC_DEFAULT = default #else # define FMT_MSC_DEFAULT #endif #ifndef FMT_THROW # if FMT_EXCEPTIONS # if FMT_MSC_VERSION || defined(__NVCC__) FMT_BEGIN_NAMESPACE namespace detail { template <typename Exception> inline void do_throw(const Exception& x) { // Silence unreachable code warnings in MSVC and NVCC because these // are nearly impossible to fix in a generic code. volatile bool b = true; if (b) throw x; } } // namespace detail FMT_END_NAMESPACE # define FMT_THROW(x) detail::do_throw(x) # else # define FMT_THROW(x) throw x # endif # else # define FMT_THROW(x) \ do { \ FMT_ASSERT(false, (x).what()); \ } while (false) # endif #endif #if FMT_EXCEPTIONS # define FMT_TRY try # define FMT_CATCH(x) catch (x) #else # define FMT_TRY if (true) # define FMT_CATCH(x) if (false) #endif #ifndef FMT_MAYBE_UNUSED # if FMT_HAS_CPP17_ATTRIBUTE(maybe_unused) # define FMT_MAYBE_UNUSED [[maybe_unused]] # else # define FMT_MAYBE_UNUSED # endif #endif #ifndef FMT_USE_USER_DEFINED_LITERALS // EDG based compilers (Intel, NVIDIA, Elbrus, etc), GCC and MSVC support UDLs. # if (FMT_HAS_FEATURE(cxx_user_literals) || FMT_GCC_VERSION >= 407 || \ FMT_MSC_VERSION >= 1900) && \ (!defined(__EDG_VERSION__) || __EDG_VERSION__ >= /* UDL feature */ 480) # define FMT_USE_USER_DEFINED_LITERALS 1 # else # define FMT_USE_USER_DEFINED_LITERALS 0 # endif #endif // Defining FMT_REDUCE_INT_INSTANTIATIONS to 1, will reduce the number of // integer formatter template instantiations to just one by only using the // largest integer type. This results in a reduction in binary size but will // cause a decrease in integer formatting performance. #if !defined(FMT_REDUCE_INT_INSTANTIATIONS) # define FMT_REDUCE_INT_INSTANTIATIONS 0 #endif // __builtin_clz is broken in clang with Microsoft CodeGen: // https://github.com/fmtlib/fmt/issues/519. #if !FMT_MSC_VERSION # if FMT_HAS_BUILTIN(__builtin_clz) || FMT_GCC_VERSION || FMT_ICC_VERSION # define FMT_BUILTIN_CLZ(n) __builtin_clz(n) # endif # if FMT_HAS_BUILTIN(__builtin_clzll) || FMT_GCC_VERSION || FMT_ICC_VERSION # define FMT_BUILTIN_CLZLL(n) __builtin_clzll(n) # endif #endif // __builtin_ctz is broken in Intel Compiler Classic on Windows: // https://github.com/fmtlib/fmt/issues/2510. #ifndef __ICL # if FMT_HAS_BUILTIN(__builtin_ctz) || FMT_GCC_VERSION || FMT_ICC_VERSION || \ defined(__NVCOMPILER) # define FMT_BUILTIN_CTZ(n) __builtin_ctz(n) # endif # if FMT_HAS_BUILTIN(__builtin_ctzll) || FMT_GCC_VERSION || \ FMT_ICC_VERSION || defined(__NVCOMPILER) # define FMT_BUILTIN_CTZLL(n) __builtin_ctzll(n) # endif #endif #if FMT_MSC_VERSION # include <intrin.h> // _BitScanReverse[64], _BitScanForward[64], _umul128 #endif // Some compilers masquerade as both MSVC and GCC-likes or otherwise support // __builtin_clz and __builtin_clzll, so only define FMT_BUILTIN_CLZ using the // MSVC intrinsics if the clz and clzll builtins are not available. #if FMT_MSC_VERSION && !defined(FMT_BUILTIN_CLZLL) && \ !defined(FMT_BUILTIN_CTZLL) FMT_BEGIN_NAMESPACE namespace detail { // Avoid Clang with Microsoft CodeGen's -Wunknown-pragmas warning. # if !defined(__clang__) # pragma intrinsic(_BitScanForward) # pragma intrinsic(_BitScanReverse) # if defined(_WIN64) # pragma intrinsic(_BitScanForward64) # pragma intrinsic(_BitScanReverse64) # endif # endif inline auto clz(uint32_t x) -> int { unsigned long r = 0; _BitScanReverse(&r, x); FMT_ASSERT(x != 0, ""); // Static analysis complains about using uninitialized data // "r", but the only way that can happen is if "x" is 0, // which the callers guarantee to not happen. FMT_MSC_WARNING(suppress : 6102) return 31 ^ static_cast<int>(r); } # define FMT_BUILTIN_CLZ(n) detail::clz(n) inline auto clzll(uint64_t x) -> int { unsigned long r = 0; # ifdef _WIN64 _BitScanReverse64(&r, x); # else // Scan the high 32 bits. if (_BitScanReverse(&r, static_cast<uint32_t>(x >> 32))) return 63 ^ (r + 32); // Scan the low 32 bits. _BitScanReverse(&r, static_cast<uint32_t>(x)); # endif FMT_ASSERT(x != 0, ""); FMT_MSC_WARNING(suppress : 6102) // Suppress a bogus static analysis warning. return 63 ^ static_cast<int>(r); } # define FMT_BUILTIN_CLZLL(n) detail::clzll(n) inline auto ctz(uint32_t x) -> int { unsigned long r = 0; _BitScanForward(&r, x); FMT_ASSERT(x != 0, ""); FMT_MSC_WARNING(suppress : 6102) // Suppress a bogus static analysis warning. return static_cast<int>(r); } # define FMT_BUILTIN_CTZ(n) detail::ctz(n) inline auto ctzll(uint64_t x) -> int { unsigned long r = 0; FMT_ASSERT(x != 0, ""); FMT_MSC_WARNING(suppress : 6102) // Suppress a bogus static analysis warning. # ifdef _WIN64 _BitScanForward64(&r, x); # else // Scan the low 32 bits. if (_BitScanForward(&r, static_cast<uint32_t>(x))) return static_cast<int>(r); // Scan the high 32 bits. _BitScanForward(&r, static_cast<uint32_t>(x >> 32)); r += 32; # endif return static_cast<int>(r); } # define FMT_BUILTIN_CTZLL(n) detail::ctzll(n) } // namespace detail FMT_END_NAMESPACE #endif FMT_BEGIN_NAMESPACE