forked from ontio/ontology
/
converts.go
74 lines (62 loc) · 1.86 KB
/
converts.go
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/*
* Copyright (C) 2018 The ontology Authors
* This file is part of The ontology library.
*
* The ontology is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* The ontology is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with The ontology. If not, see <http://www.gnu.org/licenses/>.
*/
package util
import (
"bytes"
"encoding/binary"
"math"
)
func ByteToFloat32(bytes []byte) float32 {
bits := binary.LittleEndian.Uint32(bytes)
return math.Float32frombits(bits)
}
func ByteToFloat64(bytes []byte) float64 {
bits := binary.LittleEndian.Uint64(bytes)
return math.Float64frombits(bits)
}
func Int32ToBytes(i32 uint32) []byte {
bytesBuffer := bytes.NewBuffer([]byte{})
binary.Write(bytesBuffer, binary.LittleEndian, i32)
return bytesBuffer.Bytes()
}
func Int64ToBytes(i64 uint64) []byte {
bytesBuffer := bytes.NewBuffer([]byte{})
binary.Write(bytesBuffer, binary.LittleEndian, i64)
return bytesBuffer.Bytes()
}
func Float32ToBytes(float float32) []byte {
bits := math.Float32bits(float)
bytes := make([]byte, 4)
binary.LittleEndian.PutUint32(bytes, bits)
return bytes
}
func Float64ToBytes(float float64) []byte {
bits := math.Float64bits(float)
bytes := make([]byte, 8)
binary.LittleEndian.PutUint64(bytes, bits)
return bytes
}
//trim the '\00' byte
func TrimBuffToString(bytes []byte) string {
for i, b := range bytes {
if b == 0 {
return string(bytes[:i])
}
}
return string(bytes)
}