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bytes.go
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/
bytes.go
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package utils
func LongTo8ByteArray(long int) []byte {
// we want to represent the input as a 8-bytes array
byteArray := []byte{0, 0, 0, 0, 0, 0, 0, 0}
for i := 0; i < len(byteArray); i++ {
byt := long & 0xff
byteArray[i] = byte(byt)
long = (long - byt) / 256
}
return byteArray
}
func ShortTo2ByteArray(long int) []byte {
byteArray := []byte{0, 0}
for i := 0; i < len(byteArray); i++ {
byt := long & 0xff
byteArray[i] = byte(byt)
long = (long - byt) / 256
}
return byteArray
}
func LongTo32ByteArray(long int) []byte {
byteArray := []byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
for i := 0; i < len(byteArray); i++ {
byt := long & 0xff
byteArray[i] = byte(byt)
long = (long - byt) / 256
}
return byteArray
}
func ByteArrayToLong(b []byte) int {
value := 0
for i := len(b) - 1; i >= 0; i-- {
value = value*256 + int(b[i])
}
return value
}