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