simd Directory Reference

Files
	beta_avx2.cpp
	AVX2 (256-bit, 4-wide) implementation of the beta batch kernel.
	beta_avx512.cpp
	AVX-512F (512-bit, 8-wide) implementation of the beta batch kernel.
	beta_scalar.cpp
	Scalar reference implementation of the beta batch kernel.
	gamma_avx2.cpp
	AVX2 (256-bit, 4-wide) implementation of the gamma batch kernel.
	gamma_avx512.cpp
	AVX-512F (512-bit, 8-wide) implementation of the gamma batch kernel.
	gamma_scalar.cpp
	Scalar reference implementation of the gamma batch kernel.
	simd_batch_detail.hpp
	Internal raw-double compute signatures for SIMD batch kernels.
	simd_dispatch.cpp
	Runtime dispatch: routes computeBetaBatch / computeGammaBatch to the widest available SIMD kernel at process start-up.