Honestly the thing that shocked me the most is this kind of query I've been doing for the last 10 hours: Rewrite the following in Rust: size_t strlenNEON(

Honestly the thing that shocked me the most is this kind of query I've been doing for the last 10 hours: Rewrite the following in Rust: size_t strlenNEON(const char *p) { const char *const top = p; uint8x16_t c16 = vdupq_n_u8(0); /* 16 byte alignment */ size_t n = reinterpret_cast<size_t>(p) & 15; if (n > 0) { uint8x16_t x = *(const uint8x16_t*)&p[-n]; uint8x16_t a = vceqq_u8(x, c16); unsigned long mask = GetByteMask(a) << (16 + n); if (mask) { return __builtin_clz(mask); } p += 16 - n; } assert((reinterpret_cast<size_t>(p) & 15) == 0); for (;;) { uint8x16_t x = *(const uint8x16_t*)&p[0]; uint8x16_t a = vceqq_u8(x, c16); if (isFound(a)) { unsigned int mask = GetByteMask(a); return p + __builtin_clz(mask) - top; } p += 16; } } It even correctly produces the implementation of the unimplemented functions being called from the C++ impl.