public static double ConvertFromIeeeExtended(byte[] bytes)
{
if (bytes.Length != 10)
{
throw new Exception("Incorrect length for IEEE extended.");
}
int num = (int)(bytes[0] & 127) << 8 | (int)bytes[1];
uint num2 = (uint)((int)bytes[2] << 24 | (int)bytes[3] << 16 | (int)bytes[4] << 8 | (int)bytes[5]);
uint num3 = (uint)((int)bytes[6] << 24 | (int)bytes[7] << 16 | (int)bytes[8] << 8 | (int)bytes[9]);
double num4;
if (num == 0 && num2 == 0u && num3 == 0u)
{
num4 = 0.0;
}
else if (num == 32767)
{
num4 = double.NaN;
}
else
{
num -= 16383;
num4 = IEEE.ldexp(IEEE.UnsignedToFloat((ulong)num2), num -= 31);
num4 += IEEE.ldexp(IEEE.UnsignedToFloat((ulong)num3), num - 32);
}
if ((bytes[0] & 128) == 128)
{
return(-num4);
}
return(num4);
}
public static byte[] ConvertToIeeeExtended(double num)
{
int num2;
if (num < 0.0)
{
num2 = 32768;
num *= -1.0;
}
else
{
num2 = 0;
}
int num3;
ulong num4;
ulong num5;
if (num == 0.0)
{
num3 = 0;
num4 = 0uL;
num5 = 0uL;
}
else
{
double num6 = IEEE.frexp(num, out num3);
if (num3 > 16384 || num6 >= 1.0)
{
num3 = (num2 | 32767);
num4 = 0uL;
num5 = 0uL;
}
else
{
num3 += 16382;
if (num3 < 0)
{
num6 = IEEE.ldexp(num6, num3);
num3 = 0;
}
num3 |= num2;
num6 = IEEE.ldexp(num6, 32);
double num7 = Math.Floor(num6);
num4 = IEEE.FloatToUnsigned(num7);
num6 = IEEE.ldexp(num6 - num7, 32);
num7 = Math.Floor(num6);
num5 = IEEE.FloatToUnsigned(num7);
}
}
return(new byte[]
{
(byte)(num3 >> 8),
(byte)num3,
(byte)(num4 >> 24),
(byte)(num4 >> 16),
(byte)(num4 >> 8),
(byte)num4,
(byte)(num5 >> 24),
(byte)(num5 >> 16),
(byte)(num5 >> 8),
(byte)num5
});
}
