static inline unsigned long find_zero()

in include/asm/word-at-a-time.h [36:54]

• 16 lines of code
• 5 McCabe index (conditional complexity)

static inline unsigned long find_zero(unsigned long bits)
{
#if defined(CONFIG_ALPHA_EV6) && defined(CONFIG_ALPHA_EV67)
	/* Simple if have CIX instructions */
	return __kernel_cttz(bits);
#else
	unsigned long t1, t2, t3;
	/* Retain lowest set bit only */
	bits &= -bits;
	/* Binary search for lowest set bit */
	t1 = bits & 0xf0;
	t2 = bits & 0xcc;
	t3 = bits & 0xaa;
	if (t1) t1 = 4;
	if (t2) t2 = 2;
	if (t3) t3 = 1;
	return t1 + t2 + t3;
#endif
}