nanobench

As a single-header library, it can be integrated into any C++ project with a simple #include, avoiding complex build system dependencies and reducing setup time.

Benchmarks run up to 80 times faster than Google Benchmark, enabling rapid iteration and quick feedback loops, as documented in the performance comparison.

Provides comprehensive metrics like nanoseconds per operation, instructions per cycle, and branch prediction misses, offering deep insights into microarchitectural effects.

Includes error percentage calculations and warnings for unreliable results, ensuring data integrity and helping developers avoid misleading benchmarks.