Complement of Char

the OP mentioned "this is about a bit"
so, let us make it about a bit and we'll earn money when being paid per line of code:

U8 ComplementChar(U8 Phred)
{

  if (Phred & 0x01)
  {
    Phred &= 0xfe;
  }
  else
  {
    Phred |= 0x01;
  }

  if (Phred & 0x02)
  {
    Phred &= 0xfd;
  }
  else
  {
    Phred |= 0x02;
  }

  if (Phred & 0x04)
  {
    Phred &= 0xfb;
  }
  else
  {
    Phred |= 0x04;
  }

  if (Phred & 0x08)
  {
    Phred &= 0xf7;
  }
  else
  {
    Phred |= 0x08;
  }

  if (Phred & 0x10)
  {
    Phred &= 0xef;
  }
  else
  {
    Phred |= 0x10;
  }

  if (Phred & 0x20)
  {
    Phred &= 0xdf;
  }
  else
  {
    Phred |= 0x20;
  }

  if (Phred & 0x40)
  {
    Phred &= 0xbf;
  }
  else
  {
    Phred |= 0x40;
  }

  if (Phred & 0x80)
  {
    Phred &= 0x7f;
  }
  else
  {
    Phred |= 0x80;
  }
} // end ComplementChar

Erik

the OP mentioned "this is about a bit"
so, let us make it about a bit and we'll earn money when being paid per line of code:

U8 ComplementChar(U8 Phred)
{

  if (Phred & 0x01)
  {
    Phred &= 0xfe;
  }
  else
  {
    Phred |= 0x01;
  }

  if (Phred & 0x02)
  {
    Phred &= 0xfd;
  }
  else
  {
    Phred |= 0x02;
  }

  if (Phred & 0x04)
  {
    Phred &= 0xfb;
  }
  else
  {
    Phred |= 0x04;
  }

  if (Phred & 0x08)
  {
    Phred &= 0xf7;
  }
  else
  {
    Phred |= 0x08;
  }

  if (Phred & 0x10)
  {
    Phred &= 0xef;
  }
  else
  {
    Phred |= 0x10;
  }

  if (Phred & 0x20)
  {
    Phred &= 0xdf;
  }
  else
  {
    Phred |= 0x20;
  }

  if (Phred & 0x40)
  {
    Phred &= 0xbf;
  }
  else
  {
    Phred |= 0x40;
  }

  if (Phred & 0x80)
  {
    Phred &= 0x7f;
  }
  else
  {
    Phred |= 0x80;
  }
} // end ComplementChar

Erik

Are you sure the OP meant complement and not compliment? Complimenting a charcter would change the whole dynamic of the function and might make a lot more sense. For example:

char *GetComplimentOfAChar (char c)
{
if (c < 0)
  return ("You look very pretty today.");

if (c < 64)
  return ("My, you're a handsome character.");

return ("My, what a big character you are.");
}

:-)

Jon

the OP mentioned "this is about a bit"

Maybe a function that copies a char to a bdata variable and then inverts each bit separately ? Might be fun.

Hm, maybe the OP can try this:

sbit ACC_0 = ACC^0;

unsigned char getComplement(unsigned char input)
{
    register unsigned char i = 8;

    ACC = input;

    do
    {
        ACC *= 2;
        ACC_0 = CY ? 0 : 1;
    } while(--i);

    return ACC;
}

warning: the code above is strictly non-ansi and non-portable.