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41 #include "ispowerof2.h"
48 assert (! is_power_of_2 (0));
50 /* is_power_of_2 is only defined for unsigned long type, which is
51 * 32 bit on 32 bit platforms. We need to store i in a 64 bit type
52 * so the loops don't wrap around.
54 for (i
= 1; i
<= 0x80000000; i
<<= 1)
55 assert (is_power_of_2 (i
));
57 for (i
= 4; i
<= 0x80000000; i
<<= 1)
58 assert (! is_power_of_2 (i
-1));