| public static ReadBytes ( System.ByteBuffer buffer, byte data, int offset, int count ) : void | ||
| buffer | System.ByteBuffer | |
| data | byte | |
| offset | int | |
| count | int | |
| return | void | |
static decimal DecodeDecimal64(ByteBuffer buffer)
{
byte[] bytes = new byte[FixedWidth.Decimal64];
AmqpBitConverter.ReadBytes(buffer, bytes, 0, bytes.Length);
int sign = 1;
int exponent = 0;
sign = (bytes[0] & 0x80) != 0 ? -1 : 1;
if ((bytes[0] & 0x60) != 0x60)
{
// s 10-bit-exponent (0)53-bit-significant
exponent = ((bytes[0] & 0x7F) << 3) | ((bytes[1] & 0xE0) >> 5);
bytes[0] = 0;
bytes[1] &= 0x1F;
}
else if ((bytes[0] & 0x78) != 0)
{
// handle NaN and Infinity
}
else
{
// s 11 10-bit-exponent (100)51-bit-significant
exponent = ((bytes[0] & 0x1F) << 8) | ((bytes[1] & 0xF8) >> 3);
bytes[0] = 0;
bytes[1] &= 0x7;
bytes[1] |= 0x20;
}
int middle = (int)AmqpBitConverter.ReadUInt(bytes, 0, 4);
int low = (int)AmqpBitConverter.ReadUInt(bytes, 4, 4);
return(CreateDecimal(low, middle, 0, sign, exponent - Decimal64Bias));
}
static decimal DecodeDecimal128(ByteBuffer buffer)
{
byte[] bytes = new byte[FixedWidth.Decimal128];
AmqpBitConverter.ReadBytes(buffer, bytes, 0, bytes.Length);
int sign = 1;
int exponent = 0;
sign = (bytes[0] & 0x80) != 0 ? -1 : 1;
if ((bytes[0] & 0x60) != 0x60)
{
// s 14-bit-exponent (0)113-bit-significant
exponent = ((bytes[0] & 0x7F) << 7) | ((bytes[1] & 0xFE) >> 1);
bytes[0] = 0;
bytes[1] &= 0x1;
}
else if ((bytes[0] & 0x78) != 0)
{
// handle NaN and Infinity
}
else
{
// s 11 14-bit-exponent (100)111-bit-significant
// it is out of the valid range already. Should not be used
return(0);
}
int high = (int)AmqpBitConverter.ReadUInt(bytes, 4, 4);
int middle = (int)AmqpBitConverter.ReadUInt(bytes, 8, 4);
int low = (int)AmqpBitConverter.ReadUInt(bytes, 12, 4);
return(CreateDecimal(low, middle, high, sign, exponent - Decimal128Bias));
}
static decimal DecodeDecimal32(ByteBuffer buffer)
{
byte[] bytes = new byte[FixedWidth.Decimal32];
AmqpBitConverter.ReadBytes(buffer, bytes, 0, bytes.Length);
int sign = 1;
int exponent = 0;
sign = (bytes[0] & 0x80) != 0 ? -1 : 1;
if ((bytes[0] & 0x60) != 0x60)
{
// s 8-bit-exponent (0)23-bit-significant
exponent = ((bytes[0] & 0x7F) << 1) | ((bytes[1] & 0x80) >> 7);
bytes[0] = 0;
bytes[1] &= 0x7F;
}
else if ((bytes[0] & 0x78) != 0)
{
// handle NaN and Infinity
}
else
{
// s 11 8-bit-exponent (100)21-bit-significant
exponent = ((bytes[0] & 0x1F) << 3) | ((bytes[1] & 0xE0) >> 5);
bytes[0] = 0;
bytes[1] &= 0x1F;
bytes[1] |= 0x80;
}
int low = (int)AmqpBitConverter.ReadUInt(bytes, 0, bytes.Length);
return(CreateDecimal(low, 0, 0, sign, exponent - Decimal32Bias));
}
