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Can someone clarify to me please why past2 is NOT negative when this code is run? Even though past is.
Thanks.
NSTimeInterval p1 = (arc4random()%600000);
NSTimeInterval past = -p1;
NSTimeInterval past2 = -(arc4random()%600000);
arc4random() returns an unsigned int (u_int32_t), so trying to make it negative is coercing the result to unsigned as well, which is why you’re getting a very large positive number instead of a negative number.
If you want to get a negative random result in one call, try:
joe