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0adb8a69b1
relating to previous work https://github.com/tfussell/xlnt/issues/422 Results are matching what was observed at the time ^^ was being worked on std::from_chars is included as the target to beat, but since only MSVC has it for floating point it's not hugely useful yet uniform real distribution is probably a horrible choice, and it might be good to randomise the number of sf in each string also (currently the y all end up at max length) Run on (4 X 3500 MHz CPU s) CPU Caches: L1 Data 32K (x4) L1 Instruction 32K (x4) L2 Unified 262K (x4) L3 Unified 6291K (x1) ---------------------------------------------------------------------------------------------------------- Benchmark Time CPU Iterations ---------------------------------------------------------------------------------------------------------- RandFloats/double_from_string_sstream 804 ns 820 ns 896000 RandFloats/double_from_string_strtod 163 ns 162 ns 5973333 RandFloats/double_from_string_strtod_fixed 175 ns 172 ns 5352107 RandFloats/double_from_string_strtod_fixed_const_ref 150 ns 152 ns 5352107 RandFloats/double_from_string_std_from_chars 87.1 ns 88.3 ns 9557333 RandFloatsComma/double_from_string_strtod_fixed_comma_ref 172 ns 173 ns 5146257 RandFloatsComma/double_from_string_strtod_fixed_comma_const_ref 180 ns 175 ns 5352107
36 lines
1.1 KiB
CMake
36 lines
1.1 KiB
CMake
# FetchContent added in cmake v3.11
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# https://cmake.org/cmake/help/v3.11/module/FetchContent.html
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# this file is behind a feature flag (XLNT_MICROBENCH_ENABLED) so the primary build is not affected
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cmake_minimum_required(VERSION 3.11)
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project(xlnt_ubench)
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# acquire google benchmark dependency
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# disable generation of the various test projects
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set(BENCHMARK_ENABLE_TESTING OFF)
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# gtest not required
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set(BENCHMARK_ENABLE_GTEST_TESTS OFF)
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include(FetchContent)
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FetchContent_Declare(
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googlebenchmark
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GIT_REPOSITORY https://github.com/google/benchmark
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GIT_TAG v1.5.0
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)
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# download if not already present
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FetchContent_GetProperties(googlebenchmark)
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if(NOT googlebenchmark_POPULATED)
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FetchContent_Populate(googlebenchmark)
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add_subdirectory(${googlebenchmark_SOURCE_DIR} ${googlebenchmark_BINARY_DIR})
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endif()
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# equivalent of add_subdirectory, now available for use
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FetchContent_MakeAvailable(googlebenchmark)
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add_executable(xlnt_ubench)
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target_sources(xlnt_ubench
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PRIVATE
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string_to_double.cpp
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double_to_string.cpp
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)
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target_link_libraries(xlnt_ubench benchmark_main xlnt)
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target_compile_features(xlnt_ubench PRIVATE cxx_std_17) |