Carlos
- Updated: March 11, 2026
- 1 min read
Fast Asin Implementations Reveal Hidden Performance Boosts for C++ Ray Tracing
Discover how a simple optimization of the arcsine function can dramatically speed up C++ ray tracing engines. The original 16bpp.net article reveals the use of Padé approximations and refined Taylor series to replace the standard asin, delivering up to 2× performance gains on modern CPUs. Benchmarks across Windows, Linux, and macOS show consistent improvements, and the author shares insights on locating existing fast asin implementations in standard libraries. Learn how these techniques can be applied to your own rendering pipelines. Read the full details on the original post. For more on performance tuning, explore our guides on Performance Optimizations and C++ Ray Tracing Tips.