public void ApplyBitAndTo(UnmanagedSliceBuilder value)
{
uint size = checked ((uint)this.Value.Count);
// if the value is empty, then 0 AND * will always be zero
if (value.Count == 0)
{
value.Resize(size, 0);
return;
}
// truncate the value if larger, or pad it with zeroes if shorter
value.Resize(size, 0);
if (size > 0)
{
unsafe
{
fixed(byte *ptr = this.Value.Array)
{
byte *left = value.Data;
byte *right = ptr + this.Value.Offset;
//TODO: find a way to optimize this for common sizes like 4 or 8 bytes!
while (size-- > 0)
{
*left++ &= *right++;
}
}
}
}
}
public void ApplyAddTo(UnmanagedSliceBuilder value)
{
uint size = checked ((uint)this.Value.Count);
// if the value is empty, then this is the same thing as adding to 0
if (value.Count == 0)
{
value.Append(this.Value);
return;
}
// truncate the value if larger, or pad it with zeroes if shorter
value.Resize(size, 0);
if (size > 0)
{
unsafe
{
fixed(byte *ptr = this.Value.Array)
{
byte *left = value.Data;
byte *right = ptr + this.Value.Offset;
//TODO: find a way to optimize this for common sizes like 4 or 8 bytes!
int carry = 0;
while (size-- > 0)
{
carry += *left + *right++;
*left++ = (byte)carry;
carry >>= 8;
}
}
}
}
}
