Bonsoir Vik,
+int4gcd_internal(int32 arg1, int32 arg2)
+{
+ int32 swap;
+
+ /*
+ * Put the greater value in arg1.
+ * This would happen automatically in the loop below, but avoids an
+ * expensive modulo simulation on some architectures.
+ */
+ if (arg1 < arg2)
+ {
+ swap = arg1;
+ arg1 = arg2;
+ arg2 = swap;
+ }
The point of swapping is to a void possibly expensive modulo, but this
should be done on absolute values, otherwise it may not achieve its
purpose as stated by the comment?
> gcd() is now strictly positive, so INT_MIN is no longer a valid result.
Ok.
I'm unsure about gcd(INT_MIN, 0) should error. Possibly 0 would be
nicer?
--
Fabien.