You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: blake2b_generic.go
    path of file: ./repos/podman/vendor/golang.org/x/crypto/blake2b
    
    the code of the file until where you have to start completion: // Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package blake2b

import (
	"encoding/binary"
	"math/bits"
)

// the precomputed values for BLAKE2b
// there are 12 16-byte arrays - one for each round
// the entries are calculated from the sigma constants.
var precomputed = [12][16]byte{
	{0, 2, 4, 6, 1, 3, 5, 7, 8, 10, 12, 14, 9, 11, 13, 15},
	{14, 4, 9, 13, 10, 8, 15, 6, 1, 0, 11, 5, 12, 2, 7, 3},
	{11, 12, 5, 15, 8, 0, 2, 13, 10, 3, 7, 9, 14, 6, 1, 4},
	{7, 3, 13, 11, 9, 1, 12, 14, 2, 5, 4, 15, 6, 10, 0, 8},
	{9, 5, 2, 10, 0, 7, 4, 15, 14, 11, 6, 3, 1, 12, 8, 13},
	{2, 6, 0, 8, 12, 10, 11, 3, 4, 7, 15, 1, 13, 5, 14, 9},
	{12, 1, 14, 4, 5, 15, 13, 10, 0, 6, 9, 8, 7, 3, 2, 11},
	{13, 7, 12, 3, 11, 14, 1, 9, 5, 15, 8, 2, 0, 4, 6, 10},
	{6, 14, 11, 0, 15, 9, 3, 8, 12, 13, 1, 10, 2, 7, 4, 5},
	{10, 8, 7, 1, 2, 4, 6, 5, 15, 9, 3, 13, 
    
func hashBlocksGeneric(h *[8]uint64, c *[2]uint64, flag uint64, blocks []byte) {
	var m [16]uint64
	c0, c1 := c[0], c[1]

	for i := 0; i < len(blocks); {
		c0 += BlockSize
		if c0 < BlockSize {
			c1++
		}

		v0, v1, v2, v3, v4, v5, v6, v7 := h[0], h[1], h[2], h[3], h[4], h[5], h[6], h[7]
		v8, v9, v10, v11, v12, v13, v14, v15 := iv[0], iv[1], iv[2], iv[3], iv[4], iv[5], iv[6], iv[7]
		v12 ^= c0
		v13 ^= c1
		v14 ^= flag

		for j := range m {
			m[j] = binary.LittleEndian.Uint64(blocks[i:])
			i += 8
		}

		for j := range precomputed {
			s := &(precomputed[j])

			v0 += m[s[0]]
			v0 += v4
			v12 ^= v0
			v12 = bits.RotateLeft64(v12, -32)
			v8 += v12
			v4 ^= v8
			v4 = bits.RotateLeft64(v4, -24)
			v1 += m[s[1]]
			v1 += v5
			v13 ^= v1
			v13 = bits.RotateLeft64(v13, -32)
			v9 += v13
			v5 ^= v9
			v5 = bits.RotateLeft64(v5, -24)
			v2 += m[s[2]]
			v2 += v6
			v14 ^= v2
			v14 = bits.RotateLeft64(v14, -32)
			v10 += v14
			v6 ^= v10
			v6 = bits.RotateLeft64(v6, -24)
			v3 += m[s[3]]
			v3 += v7
			v15 ^= v3
			v15 = bits.RotateLeft64(v15, -32)
			v11 += v15
			v7 ^= v11
			v7 = bits.RotateLeft64(v7, -24)

			v0 += m[s[4]]
			v0 += v4
			v12 ^= v0
			v12 = bits.RotateLeft64(v12, -16)
			v8 += v12
			v4 ^= v8
			v4 = bits.RotateLeft64(v4, -63)
			v1 += m[s[5]]
			v1 += v5
			v13 ^= v1
			v13 = bits.RotateLeft64(v13, -16)
			v9 += v13
			v5 ^= v9
			v5 = bits.RotateLeft64(v5, -63)
			v2 += m[s[6]]
			v2 += v6
			v14 ^= v2
			v14 = bits.RotateLeft64(v14, -16)
			v10 += v14
			v6 ^= v10
			v6 = bits.RotateLeft64(v6, -63)
			v3 += m[s[7]]
			v3 += v7
			v15 ^= v3
			v15 = bits.RotateLeft64(v15, -16)
			v11 += v15
			v7 ^= v11
			v7 = bits.RotateLeft64(v7, -63)

			v0 += m[s[8]]
			v0 += v5
			v15 ^= v0
			v15 = bits.RotateLeft64(v15, -32)
			v10 += v15
			v5 ^= v10
			v5 = bits.RotateLeft64(v5, -24)
			v1 += m[s[9]]
			v1 += v6
			v12 ^= v1
			v12 = bits.RotateLeft64(v12, -32)
			v11 += v12
			v6 ^= v11
			v6 = bits.RotateLeft64(v6, -24)
			v2 += m[s[10]]
			v2 += v7
			v13 ^= v2
			v13 = bits.RotateLeft64(v13, -32)
			v8 += v13
			v7 ^= v8
			v7 = bits.RotateLeft64(v7, -24)
			v3 += m[s[11]]
			v3 += v4
			v14 ^= v3
			v14 = bits.RotateLeft64(v14, -32)
			v9 += v14
			v4 ^= v9
			v4 = bits.RotateLeft64(v4, -24)

			v0 += m[s[12]]
			v0 += v5
			v15 ^= v0
			v15 = bits.RotateLeft64(v15, -16)
			v10 += v15
			v5 ^= v10
			v5 = bits.RotateLeft64(v5, -63)
			v1 += m[s[13]]
			v1 += v6
			v12 ^= v1
			v12 = bits.RotateLeft64(v12, -16)
			v11 += v12
			v6 ^= v11
			v6 = bits.RotateLeft64(v6, -63)
			v2 += m[s[14]]
			v2 += v7
			v13 ^= v2
			v13 = bits.RotateLeft64(v13, -16)
			v8 += v13
			v7 ^= v8
			v7 = bits.RotateLeft64(v7, -63)
			v3 += m[s[15]]
			v3 += v4
			v14 ^= v3
			v14 = bits.RotateLeft64(v14, -16)
			v9 += v14
			v4 ^= v9
			v4 = bits.RotateLeft64(v4, -63)

		}

		h[0] ^= v0 ^ v8
		h[1] ^= v1 ^ v9
		h[2] ^= v2 ^ v10
		h[3] ^= v3 ^ v11
		h[4] ^= v4 ^ v12
		h[5] ^= v5 ^ v13
		h[6] ^= v6 ^ v14
		h[7] ^= v7 ^ v15
	}
	c[0], c[1] = c0, c1
}