- Fix mismatched new[]/free() to use proper delete[] in interface.hpp
- Fix incorrect dx4 calculation (should be dx2*dx2, not dx2*dx) in lookup_xsimd.cpp
- Fix redundant sinv calculation by using separate base variables in sin_cosf_dispatcher
- Remove unused variable declarations in lookup_avx.cpp
- Optimize reference backend to use sincosf() instead of separate sin/cos calls
Co-authored-by: wvbbreu <185333235+wvbbreu@users.noreply.github.com>
