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|
package proto
import (
"math"
"unsafe"
)
var float32Codec = codec{
wire: fixed32,
size: sizeOfFloat32,
encode: encodeFloat32,
decode: decodeFloat32,
}
func sizeOfFloat32(p unsafe.Pointer, flags flags) int {
if p != nil {
if v := *(*float32)(p); v != 0 || flags.has(wantzero) || math.Signbit(float64(v)) {
return 4
}
}
return 0
}
func encodeFloat32(b []byte, p unsafe.Pointer, flags flags) (int, error) {
if p != nil {
if v := *(*float32)(p); v != 0 || flags.has(wantzero) || math.Signbit(float64(v)) {
return encodeLE32(b, math.Float32bits(v))
}
}
return 0, nil
}
func decodeFloat32(b []byte, p unsafe.Pointer, _ flags) (int, error) {
v, n, err := decodeLE32(b)
*(*float32)(p) = math.Float32frombits(v)
return n, err
}
|
