/// <summary>
/// Writes a <see cref="MessagePackCode.Float64"/> value.
/// </summary>
/// <param name="value">The value.</param>
public void Write(double value)
{
var span = writer.GetSpan(9);
span[0] = MessagePackCode.Float64;
var num = new Float64Bits(value);
if (BitConverter.IsLittleEndian)
{
span[1] = num.Byte7;
span[2] = num.Byte6;
span[3] = num.Byte5;
span[4] = num.Byte4;
span[5] = num.Byte3;
span[6] = num.Byte2;
span[7] = num.Byte1;
span[8] = num.Byte0;
}
else
{
span[1] = num.Byte0;
span[2] = num.Byte1;
span[3] = num.Byte2;
span[4] = num.Byte3;
span[5] = num.Byte4;
span[6] = num.Byte5;
span[7] = num.Byte6;
span[8] = num.Byte7;
}
writer.Advance(9);
}
/// <summary>
/// Reads an <see cref="double"/> value from any value encoded with:
/// <see cref="MessagePackCode.Float64"/>,
/// <see cref="MessagePackCode.Float32"/>,
/// <see cref="MessagePackCode.Int8"/>,
/// <see cref="MessagePackCode.Int16"/>,
/// <see cref="MessagePackCode.Int32"/>,
/// <see cref="MessagePackCode.Int64"/>,
/// <see cref="MessagePackCode.UInt8"/>,
/// <see cref="MessagePackCode.UInt16"/>,
/// <see cref="MessagePackCode.UInt32"/>,
/// <see cref="MessagePackCode.UInt64"/>,
/// or some value between <see cref="MessagePackCode.MinNegativeFixInt"/> and <see cref="MessagePackCode.MaxNegativeFixInt"/>,
/// or some value between <see cref="MessagePackCode.MinFixInt"/> and <see cref="MessagePackCode.MaxFixInt"/>.
/// </summary>
/// <returns>The value.</returns>
public unsafe double ReadDouble()
{
ThrowInsufficientBufferUnless(this.reader.TryRead(out byte code));
switch (code)
{
case MessagePackCode.Float64:
byte * pScratch8 = stackalloc byte[8];
Span <byte> scratch8 = new Span <byte>(pScratch8, 8);
ThrowInsufficientBufferUnless(this.reader.TryCopyTo(scratch8));
this.reader.Advance(scratch8.Length);
var doubleValue = new Float64Bits(scratch8);
return(doubleValue.Value);
case MessagePackCode.Float32:
byte * pScratch4 = stackalloc byte[4];
Span <byte> scratch4 = new Span <byte>(pScratch4, 4);
ThrowInsufficientBufferUnless(this.reader.TryCopyTo(scratch4));
this.reader.Advance(scratch4.Length);
var floatValue = new Float32Bits(scratch4);
return(floatValue.Value);
case MessagePackCode.Int8:
ThrowInsufficientBufferUnless(this.reader.TryRead(out byte byteValue));
return(unchecked ((sbyte)byteValue));
case MessagePackCode.Int16:
ThrowInsufficientBufferUnless(this.reader.TryReadBigEndian(out short shortValue));
return(shortValue);
case MessagePackCode.Int32:
ThrowInsufficientBufferUnless(this.reader.TryReadBigEndian(out int intValue));
return(intValue);
case MessagePackCode.Int64:
ThrowInsufficientBufferUnless(this.reader.TryReadBigEndian(out long longValue));
return(longValue);
case MessagePackCode.UInt8:
ThrowInsufficientBufferUnless(this.reader.TryRead(out byteValue));
return(byteValue);
case MessagePackCode.UInt16:
ThrowInsufficientBufferUnless(this.reader.TryReadBigEndian(out shortValue));
return(unchecked ((ushort)shortValue));
case MessagePackCode.UInt32:
ThrowInsufficientBufferUnless(this.reader.TryReadBigEndian(out intValue));
return(unchecked ((uint)intValue));
case MessagePackCode.UInt64:
ThrowInsufficientBufferUnless(this.reader.TryReadBigEndian(out longValue));
return(unchecked ((ulong)longValue));
default:
if (code >= MessagePackCode.MinNegativeFixInt && code <= MessagePackCode.MaxNegativeFixInt)
{
return(unchecked ((sbyte)code));
}
else if (code >= MessagePackCode.MinFixInt && code <= MessagePackCode.MaxFixInt)
{
return(code);
}
throw ThrowInvalidCode(code);
}
}