fixdiv - Fixed point division. Allegro game programming library.
fixed fixdiv(fixed x, fixed y);
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:
/* 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. */
Returns the result of dividing `x' by `y'. If `y' is zero, returns the maximum
possible fixed point value and sets `errno' to ERANGE.
fixadd(3alleg4), fixsub(3alleg4), fixmul(3alleg4),