tiny.simd.mismatch

1/// Returns the index of the first lane where two equal-length spans differ,2/// or their length when every lane agrees. Whole vectors compare first, and3/// the last vector overlaps lanes already known equal. A byte span shorter4/// than a vector compares eight bytes at a time the same way.5pub fn mismatch(comptime D: type, left: []const D.Lane, right: []const D.Lane) usize {6    requireInteger(D.Lane, "mismatch");7    std.debug.assert(left.len == right.len);8    if (left.len >= D.lane_count) return vectorMismatch(D, left, right);9    if (D.Lane == u8 and left.len >= word_bytes) return wordMismatch(left, right);10    for (left, right, 0..) |first, second, index| {11        if (first != second) return index;12    }13    return left.len;14}

1pub const mismatch = algo.mismatch;