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static const char * const lcset = "0123456789abcdef";

static const char * const ucset = "0123456789ABCDEF";

char *

f (char *buffer, long long value, char type)

{

  int base, i;

  i = 128  - 1;

  buffer[i--] = '\0';

  switch (type)

    {

    case 'u':

    case 'o':

    case 'x':

    case 'X':

      if (type == 'u')

        base = 10;

      else if (type == 'o')

        base = 8;

      else

        base = 16;

      while (i >= 0)

        {

          if (type == 'X')

            buffer[i--] = ucset[((unsigned long long) value) % base];

          else

            buffer[i--] = lcset[((unsigned long long) value) % base];

          if ((value = ((unsigned long long) value) / base) == 0)

            break;

        }

      break;

    }

  return &buffer[++i];

}