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double.go
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double.go
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// Licensed to the Apache Software Foundation (ASF) under one or more
// contributor license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright ownership.
// The ASF licenses this file to You under the Apache License, Version 2.0
// (the "License"); you may not use this file except in compliance with
// the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package coder
import (
"encoding/binary"
"io"
"math"
"github.com/apache/beam/sdks/go/pkg/beam/core/util/ioutilx"
)
// EncodeDouble encodes a float64 in big endian format.
func EncodeDouble(value float64, w io.Writer) error {
var data [8]byte
binary.BigEndian.PutUint64(data[:], math.Float64bits(value))
_, err := ioutilx.WriteUnsafe(w, data[:])
return err
}
// DecodeDouble decodes a float64 in big endian format.
func DecodeDouble(r io.Reader) (float64, error) {
var data [8]byte
if err := ioutilx.ReadNBufUnsafe(r, data[:]); err != nil {
return 0, err
}
return math.Float64frombits(binary.BigEndian.Uint64(data[:])), nil
}