Provided by: allegro4-doc_4.4.2-13_all bug

NAME

       fixdiv - Fixed point division. Allegro game programming library.

SYNOPSIS

       #include <allegro.h>

       fixed fixdiv(fixed x, fixed y);

DESCRIPTION

       A  fixed  point value can be divided by an integer with the normal `/' operator. To divide
       two fixed point values, though, you must use this function. If a division by zero  occurs,
       `errno'  will  be  set and the maximum possible value will be returned, but `errno' is not
       cleared if the operation is successful. This means that if  you  are  going  to  test  for
       division by zero you should set `errno=0' before calling fixdiv(). Example:

          fixed result;
          /* This will put 0.06060 `result'. */
          result = fixdiv(itofix(2), itofix(33));
          /* This will put 0 into `result'. */
          result = fixdiv(0, itofix(-30));
          /* Sets `errno' and puts -32768 into `result'. */
          result = fixdiv(itofix(-100), itofix(0));
          ASSERT(!errno); /* This will fail. */

RETURN VALUE

       Returns  the  result  of dividing `x' by `y'. If `y' is zero, returns the maximum possible
       fixed point value and sets `errno' to ERANGE.

SEE ALSO

       fixadd(3alleg4), fixsub(3alleg4), fixmul(3alleg4), exfixed(3alleg4)