diff options
Diffstat (limited to 'libgo/go/math/big/rat.go')
-rw-r--r-- | libgo/go/math/big/rat.go | 60 |
1 files changed, 0 insertions, 60 deletions
diff --git a/libgo/go/math/big/rat.go b/libgo/go/math/big/rat.go index fb16f18a964..2cd9ed09388 100644 --- a/libgo/go/math/big/rat.go +++ b/libgo/go/math/big/rat.go @@ -7,8 +7,6 @@ package big import ( - "encoding/binary" - "errors" "fmt" "math" ) @@ -510,61 +508,3 @@ func (z *Rat) Quo(x, y *Rat) *Rat { z.a.neg = a.neg != b.neg return z.norm() } - -// Gob codec version. Permits backward-compatible changes to the encoding. -const ratGobVersion byte = 1 - -// GobEncode implements the gob.GobEncoder interface. -func (x *Rat) GobEncode() ([]byte, error) { - if x == nil { - return nil, nil - } - buf := make([]byte, 1+4+(len(x.a.abs)+len(x.b.abs))*_S) // extra bytes for version and sign bit (1), and numerator length (4) - i := x.b.abs.bytes(buf) - j := x.a.abs.bytes(buf[:i]) - n := i - j - if int(uint32(n)) != n { - // this should never happen - return nil, errors.New("Rat.GobEncode: numerator too large") - } - binary.BigEndian.PutUint32(buf[j-4:j], uint32(n)) - j -= 1 + 4 - b := ratGobVersion << 1 // make space for sign bit - if x.a.neg { - b |= 1 - } - buf[j] = b - return buf[j:], nil -} - -// GobDecode implements the gob.GobDecoder interface. -func (z *Rat) GobDecode(buf []byte) error { - if len(buf) == 0 { - // Other side sent a nil or default value. - *z = Rat{} - return nil - } - b := buf[0] - if b>>1 != ratGobVersion { - return fmt.Errorf("Rat.GobDecode: encoding version %d not supported", b>>1) - } - const j = 1 + 4 - i := j + binary.BigEndian.Uint32(buf[j-4:j]) - z.a.neg = b&1 != 0 - z.a.abs = z.a.abs.setBytes(buf[j:i]) - z.b.abs = z.b.abs.setBytes(buf[i:]) - return nil -} - -// MarshalText implements the encoding.TextMarshaler interface. -func (r *Rat) MarshalText() (text []byte, err error) { - return []byte(r.RatString()), nil -} - -// UnmarshalText implements the encoding.TextUnmarshaler interface. -func (r *Rat) UnmarshalText(text []byte) error { - if _, ok := r.SetString(string(text)); !ok { - return fmt.Errorf("math/big: cannot unmarshal %q into a *big.Rat", text) - } - return nil -} |