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|
package proto
import (
"math"
"unsafe"
)
var float64Codec = codec{
wire: fixed64,
size: sizeOfFloat64,
encode: encodeFloat64,
decode: decodeFloat64,
}
func sizeOfFloat64(p unsafe.Pointer, flags flags) int {
if p != nil {
if v := *(*float64)(p); v != 0 || flags.has(wantzero) || math.Signbit(v) {
return 8
}
}
return 0
}
func encodeFloat64(b []byte, p unsafe.Pointer, flags flags) (int, error) {
if p != nil {
if v := *(*float64)(p); v != 0 || flags.has(wantzero) || math.Signbit(v) {
return encodeLE64(b, math.Float64bits(v))
}
}
return 0, nil
}
func decodeFloat64(b []byte, p unsafe.Pointer, _ flags) (int, error) {
v, n, err := decodeLE64(b)
*(*float64)(p) = math.Float64frombits(v)
return n, err
}
|
