static inline unsigned long __cmpxchg()

in include/asm/cmpxchg.h [121:133]

• 13 lines of code
• 4 McCabe index (conditional complexity)

static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
		unsigned long new, int size)
{
	switch (size) {
	case 1:
	case 2:
		return cmpxchg_small(ptr, old, new, size);
	case 4:
		return cmpxchg_u32(ptr, old, new);
	default:
		return __cmpxchg_called_with_bad_pointer();
	}
}