static inline unsigned long sign_extend()

in mm/alignment.c [173:194]

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

static inline unsigned long sign_extend(unsigned long val, int len)
{
	unsigned long ret = 0;
	unsigned char *s, *t;
	int i = 0;

	val = cpu_to_le32(val);

	s = (void *)&val;
	t = (void *)&ret;

	while (i++ < len)
		*t++ = *s++;

	if (((*(t - 1)) & 0x80) && (i < 4)) {

		while (i++ <= 4)
			*t++ = 0xff;
	}

	return le32_to_cpu(ret);
}