//    archAvailableCastagnoli() bool
//
//    // archInitCastagnoli initializes the architecture-specific CRC32-C
//    // algorithm. It can only be called if archAvailableCastagnoli() returns
//    // true.
//    archInitCastagnoli()
//
//    // archUpdateCastagnoli updates the given CRC32-C. It can only be called
//    // if archInitCastagnoli() was previously called.
//    archUpdateCastagnoli(crc uint32, p []byte) uint32

// this function requires the buffer to be 16 byte aligned and > 16 bytes long.
//
//go:noescape
func vectorCrc32(crc uint32, poly uint32, p []byte) uint32

var archCastagnoliTable8 *slicing8Table

func archInitCastagnoli() {
	archCastagnoliTable8 = slicingMakeTable(Castagnoli)
}

func archUpdateCastagnoli(crc uint32, p []byte) uint32 {
	if len(p) >= 4*vecMinLen {
		// If not aligned then process the initial unaligned bytes

		return slicingUpdate(crc, slicingTable, b)
	})
}

func TestArchCastagnoli(t *testing.T) {
	if !archAvailableCastagnoli() {
		t.Skip("Arch-specific Castagnoli not available.")
	}
	archInitCastagnoli()
	slicingTable := slicingMakeTable(Castagnoli)
	testCrossCheck(t, archUpdateCastagnoli, func(crc uint32, b []byte) uint32 {
		return slicingUpdate(crc, slicingTable, b)
	})
}