API reference

SimdBase64 exposes a small, focused public surface in the SimdBase64 namespace.

Core types

• SimdBase64.Base64 — the main entry point. DecodeFromBase64 decodes a Span<byte> (ASCII / UTF-8) or Span<char> (UTF-16) input, dispatching to the fastest kernel your CPU supports. FromBase64String is a drop-in replacement for Convert.FromBase64String, and MaximalBinaryLengthFromBase64 sizes the output buffer.

The architecture-specific kernels live in nested namespaces and are selected automatically at runtime — you normally never call them directly:

• SimdBase64.Arm.Base64 — ARM64 NEON.
• SimdBase64.AVX2.Base64 — x64 AVX2.
• SimdBase64.SSE.Base64 — x64 SSSE3 / SSE4.2.
• SimdBase64.Scalar.Base64 — portable fallback (also exposes the safe, length-checked variants).

The members below are generated directly from the source.