mirror of
https://github.com/superseriousbusiness/gotosocial.git
synced 2024-12-12 02:06:31 +00:00
30 lines
747 B
Go
30 lines
747 B
Go
|
package ieee754
|
||
|
|
|
||
|
|
import (
|
||
|
|
"encoding/binary"
|
||
|
|
"io"
|
||
|
|
"math"
|
||
|
|
)
|
||
|
|
|
||
|
|
// DecodeFloat32 decodes a float32 in IEEE 754 binary representation.
|
||
|
|
// See https://www.w3.org/TR/2019/REC-wasm-core-1-20191205/#floating-point%E2%91%A2
|
||
|
|
func DecodeFloat32(buf []byte) (float32, error) {
|
||
|
|
if len(buf) < 4 {
|
||
|
|
return 0, io.ErrUnexpectedEOF
|
||
|
|
}
|
||
|
|
|
||
|
|
raw := binary.LittleEndian.Uint32(buf[:4])
|
||
|
|
return math.Float32frombits(raw), nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// DecodeFloat64 decodes a float64 in IEEE 754 binary representation.
|
||
|
|
// See https://www.w3.org/TR/2019/REC-wasm-core-1-20191205/#floating-point%E2%91%A2
|
||
|
|
func DecodeFloat64(buf []byte) (float64, error) {
|
||
|
|
if len(buf) < 8 {
|
||
|
|
return 0, io.ErrUnexpectedEOF
|
||
|
|
}
|
||
|
|
|
||
|
|
raw := binary.LittleEndian.Uint64(buf)
|
||
|
|
return math.Float64frombits(raw), nil
|
||
|
|
}
|