gorgonia.org/tensor@v0.9.24/iterator_utils.go (about)

     1  package tensor
     2  
     3  import (
     4  	"encoding/binary"
     5  	"hash/fnv"
     6  )
     7  
     8  // hashIntArray uses fnv to generate an int
     9  func hashIntArray(in []int) int {
    10  	tmp := make([]byte, 8*len(in))
    11  	for i := 0; i < len(in); i++ {
    12  		binary.LittleEndian.PutUint64(tmp[i*8:i*8+8], uint64(in[i]))
    13  	}
    14  	h := fnv.New64a()
    15  	v, _ := h.Write(tmp)
    16  	return v
    17  }
    18  
    19  // func hashIntArrayPair(in1, in2 []int) int {
    20  // 	n := len(in1) + len(in2)
    21  // 	tmp := make([]byte, 8*n)
    22  // 	i := 0
    23  // 	for ; i < len(in1); i++ {
    24  // 		binary.LittleEndian.PutUint64(tmp[i*8:i*8+8], uint64(in1[i]))
    25  // 	}
    26  // 	for j := 0; j < len(in2); j++ {
    27  // 		binary.LittleEndian.PutUint64(tmp[i*8:i*8+8], uint64(in2[j]))
    28  // 		i++
    29  // 	}
    30  // 	h := fnv.New64a()
    31  // 	v, _ := h.Write(tmp)
    32  // 	return v
    33  // }