ee593c2673
serialisation ends up roughly 2x improvement going from sstream to snprintf 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 ------------------------------------------------------------------------------------------------------------- RandFloatStrs/double_from_string_sstream 968 ns 977 ns 640000 RandFloatStrs/double_from_string_strtod 272 ns 270 ns 2488889 RandFloatStrs/double_from_string_strtod_fixed 272 ns 270 ns 2488889 RandFloatStrs/double_from_string_strtod_fixed_const_ref 273 ns 270 ns 2488889 RandFloatStrs/double_from_string_std_from_chars 193 ns 195 ns 3446154 RandFloatCommaStrs/double_from_string_strtod_fixed_comma_ref 272 ns 273 ns 2635294 RandFloatCommaStrs/double_from_string_strtod_fixed_comma_const_ref 276 ns 273 ns 2635294 RandFloats/string_from_double_sstream 1311 ns 1318 ns 497778 RandFloats/string_from_double_sstream_cached 1076 ns 1050 ns 640000 RandFloats/string_from_double_snprintf 601 ns 600 ns 1120000 RandFloats/string_from_double_snprintf_fixed 600 ns 600 ns 1120000 RandFloats/string_from_double_std_to_chars 117 ns 117 ns 5600000 RandFloatsComma/string_from_double_snprintf_fixed_comma 600 ns 600 ns 1120000 |
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benchmarks | ||
cmake | ||
docs | ||
include/xlnt | ||
logo | ||
python | ||
samples | ||
source | ||
tests | ||
third-party | ||
.appveyor.yml | ||
.clang-format | ||
.gitattributes | ||
.gitignore | ||
.gitmodules | ||
.travis.yml | ||
AUTHORS.md | ||
book.json | ||
CHANGELOG.md | ||
CMakeLists.txt | ||
CODE_OF_CONDUCT.md | ||
CONTRIBUTING.md | ||
LICENSE.md | ||
README.md | ||
SUMMARY.md |
Introduction
xlnt is a modern C++ library for manipulating spreadsheets in memory and reading/writing them from/to XLSX files as described in ECMA 376 4th edition. The first public release of xlnt version 1.0 was on May 10th, 2017. Current work is focused on increasing compatibility, improving performance, and brainstorming future development goals. For a high-level summary of what you can do with this library, see the feature list. Contributions are welcome in the form of pull requests or discussions on the repository's Issues page.
Example
Including xlnt in your project, creating a new spreadsheet, and saving it as "example.xlsx"
#include <xlnt/xlnt.hpp>
int main()
{
xlnt::workbook wb;
xlnt::worksheet ws = wb.active_sheet();
ws.cell("A1").value(5);
ws.cell("B2").value("string data");
ws.cell("C3").formula("=RAND()");
ws.merge_cells("C3:C4");
ws.freeze_panes("B2");
wb.save("example.xlsx");
return 0;
}
// compile with -std=c++14 -Ixlnt/include -lxlnt
Documentation
Documentation for the current release of xlnt is available here.
License
xlnt is released to the public for free under the terms of the MIT License. See LICENSE.md for the full text of the license and the licenses of xlnt's third-party dependencies. LICENSE.md should be distributed alongside any assemblies that use xlnt in source or compiled form.