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Mike Hamburg authored
Currently compiles and passes tests on x86_64 with arch_32 and DECAF_FORCE_32_BIT=1 (as well as the native settigs of course), so that's a start. Want to make serialization routine cross-arch. Need to check that perf is good enough (likely). Current routine in p25519/arch_32 is almost cross-arch, but has known bugs (FIXMEs). Needs to take into account separate p and, for NEON, the LIMBPERM. Want to decouple arches for each curve/field. Currently the split between decaf_word_t and word_t makes this fraught with peril. Fix is probably to rename decaf_word_t to decaf_api_word_t and fix it to either uint32 or uint64, then make internal things separate per field. That way we don't have to try arch detection in the header, which is nice. Need to make decaf_gen_tables use SC_LIMB. Might as well get rid of API_NS there too.
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