1.
#define is_odd(x) (((x)&1) != 0) #define is_even(x) (((x)&1) == 0)
2. if you're out to disprove the Collatz conjecture, use GMP or something.
1.
#define is_odd(x) (((x)&1) != 0) #define is_even(x) (((x)&1) == 0)
2. if you're out to disprove the Collatz conjecture, use GMP or something.
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