> max_align_t is only the max for scalar types, typically 8 or 16 bytes. But often math-intensive code wants 16 or 32 byte alignment for float arrays, to enable

> max_align_t is only the max for scalar types, typically 8 or 16 bytes. But often math-intensive code wants 16 or 32 byte alignment for float arrays, to enable SIMD operations. Indeed, but _Alignof(max_align_t) is a good compromise for a default alignment requirement in an allocator interface, which is what eqvinox calls for. Standard C does exactly that: malloc(), realloc(), and calloc() promise that they satisfy _Alignof(max_align_t), but nothing stricter. To reach for extended alignment requirements, your only standard tool is aligned_alloc().