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/* from OpenMV imlib.h */
#define IM_LOG2_2(x) (((x) & 0x2ULL) ? ( 2 ) : 1) // NO ({ ... }) !
#define IM_LOG2_4(x) (((x) & 0xCULL) ? ( 2 + IM_LOG2_2((x) >> 2)) : IM_LOG2_2(x)) // NO ({ ... }) !
#define IM_LOG2_8(x) (((x) & 0xF0ULL) ? ( 4 + IM_LOG2_4((x) >> 4)) : IM_LOG2_4(x)) // NO ({ ... }) !
#define IM_LOG2_16(x) (((x) & 0xFF00ULL) ? ( 8 + IM_LOG2_8((x) >> 8)) : IM_LOG2_8(x)) // NO ({ ... }) !
#define IM_LOG2_32(x) (((x) & 0xFFFF0000ULL) ? (16 + IM_LOG2_16((x) >> 16)) : IM_LOG2_16(x)) // NO ({ ... }) !
#define IM_LOG2(x) (((x) & 0xFFFFFFFF00000000ULL) ? (32 + IM_LOG2_32((x) >> 32)) : IM_LOG2_32(x)) // NO ({ ... }) !
#define IM_MAX(a,b) ({ __typeof__ (a) _a = (a); __typeof__ (b) _b = (b); _a > _b ? _a : _b; })
#define IM_MIN(a,b) ({ __typeof__ (a) _a = (a); __typeof__ (b) _b = (b); _a < _b ? _a : _b; })
#define IM_DIV(a,b) ({ __typeof__ (a) _a = (a); __typeof__ (b) _b = (b); _b ? (_a / _b) : 0; })
#define IM_MOD(a,b) ({ __typeof__ (a) _a = (a); __typeof__ (b) _b = (b); _b ? (_a % _b) : 0; })
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