C implementation of long arithmetics.
git clone https://github.com/d0gied/long-arithmetic.git
cd long-arithmetic
git submodule update --init --recursive
mkdir build
cd build
cmake ..
cmake --build .#include <iostream>
#include <long_arithmetic.h>
int main() {
bignum::BigNumber a = "123"_bn;
bignum::BigNumber b = "123456789012345678901234567890"_bn;
std::cout << a b << std::endl;
return 0;
}./build/tests/run_tests./build/tests/run_tests --help./build/benchmark/run_benchmark$ ./build/benchmark/run_benchmark --help
benchmark [--benchmark_list_tests={true|false}]
[--benchmark_filter=<regex>]
[--benchmark_min_time=`<integer>x` OR `<float>s` ]
[--benchmark_min_warmup_time=<min_warmup_time>]
[--benchmark_repetitions=<num_repetitions>]
[--benchmark_enable_random_interleaving={true|false}]
[--benchmark_report_aggregates_only={true|false}]
[--benchmark_display_aggregates_only={true|false}]
[--benchmark_format=<console|json|csv>]
[--benchmark_out=<filename>]
[--benchmark_out_format=<json|console|csv>]
[--benchmark_color={auto|true|false}]
[--benchmark_counters_tabular={true|false}]
[--benchmark_context=<key>=<value>,...]
[--benchmark_time_unit={ns|us|ms|s}]
[--v=<verbosity>]-------------------------------------------------------------------------
Benchmark/digits Time CPU Iterations
-------------------------------------------------------------------------
AddLongToLong/1 0.000 ms 0.000 ms 1776073
AddLongToLong/8 0.000 ms 0.000 ms 1774564
AddLongToLong/64 0.001 ms 0.001 ms 1230769
AddLongToLong/512 0.002 ms 0.002 ms 463610
AddLongToLong/4096 0.009 ms 0.009 ms 77641
AddLongToLong/32768 0.070 ms 0.069 ms 10130
AddLongToLong/262144 0.557 ms 0.552 ms 1264
AddLongToLong/1048576 2.23 ms 2.21 ms 317
CreateFromString/1 0.001 ms 0.000 ms 1395395
CreateFromString/8 0.001 ms 0.001 ms 1379963
CreateFromString/64 0.001 ms 0.001 ms 762477
CreateFromString/512 0.003 ms 0.003 ms 219711
CreateFromString/4096 0.022 ms 0.021 ms 32672
CreateFromString/32768 0.169 ms 0.167 ms 4189
CreateFromString/262144 1.35 ms 1.33 ms 525
CreateFromString/1048576 5.46 ms 5.37 ms 129
MultiplyLongToLong/1 0.001 ms 0.001 ms 996796
MultiplyLongToLong/8 0.001 ms 0.001 ms 1016585
MultiplyLongToLong/64 0.002 ms 0.002 ms 455987
MultiplyLongToLong/512 0.026 ms 0.026 ms 26783
MultiplyLongToLong/4096 1.49 ms 1.47 ms 476
MultiplyLongToLong/32768 93.9 ms 92.5 ms 8
MultiplyLongToLong/262144 5983 ms 5926 ms 1
MultiplyLongToLong/1048576 95835 ms 94922 ms 1
SubstractionLongToLong/1 0.001 ms 0.001 ms 508241
SubstractionLongToLong/8 0.001 ms 0.001 ms 507898
SubstractionLongToLong/64 0.002 ms 0.002 ms 363404
SubstractionLongToLong/512 0.005 ms 0.005 ms 141966
SubstractionLongToLong/4096 0.029 ms 0.029 ms 24139
SubstractionLongToLong/32768 0.223 ms 0.221 ms 3166
SubstractionLongToLong/262144 1.80 ms 1.78 ms 390
SubstractionLongToLong/1048576 7.18 ms 7.11 ms 97- Organize project repository.
- Make basic constructors of BigNumber.
- Configure CMake.
- Add google tests submodule.
- Add basic tests for BigNumber.
- Add conversion from BigNumber to string.
- Add basic comparison operations for BigNumber.
- Add addition and subtraction operations for BigNumber.
- Add multiplication operation for BigNumber.
- Add division operation for BigNumber.
- Implement Pi calculation with given precision.
- Measure time of Pi calculation.
- Add conversion from float to BigNumber.
- Add benchmark for BigNumber.