icrc1.c

来自「Numerical Recipes Software 提供的算法子程序集」· C语言 代码 · 共 17 行

unsigned short icrc1(crc,onech)
unsigned char onech;
unsigned short crc;
{
	int i;
	unsigned short ans=(crc ^ onech << 8);

	for (i=0;i<8;i++) {
		if (ans & 0x8000)
			ans = (ans <<= 1) ^ 4129;
		else
			ans <<= 1;
	}
	return ans;
}
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