Function sz_string_unpack

include/stringzilla/small_string.h:258–268

}

SZ_PUBLIC void sz_string_unpack( //
    sz_string_t const *string, sz_ptr_t *start, sz_size_t *length, sz_size_t *space, sz_bool_t *is_external) {
    sz_size_t is_small = (sz_cptr_t)string->internal.start == (sz_cptr_t)&string->internal.chars[0];
    sz_size_t is_big_mask = is_small - (sz_size_t)1;
    *start = string->external.start; // It doesn't matter if it's on stack or heap, the pointer location is the same.
    // If the string is small, use branch-less approach to mask-out the top bytes of the length.
    *length = string->external.length & ((sz_size_t)0xFF | is_big_mask);
    // In case the string is small, the `is_small - (sz_size_t)1` will become all-ones mask.
    *space = sz_u64_blend(SZ_STRING_INTERNAL_SPACE, string->external.space, is_big_mask);
    *is_external = (sz_bool_t)!is_small;
}

SZ_PUBLIC sz_bool_t sz_string_equal(sz_string_t const *a, sz_string_t const *b) {
    // Fast path for self-comparison