1992/1108/port/devbit.c (diff list | history)

1992/1107/sys/src/9/port/devbit.c:2104,2112 – 1992/1108/sys/src/9/port/devbit.c:2104,2112 (short | long | prev | next)
1992/1106		} /* * swizzle a bitmap
1992/1108		* reverse the bits in a bitmap (converting between little & big endian)
1992/1106		*/ uchar cswizzle[] = {
1992/1108		uchar bitrevtab[] = {
1992/1106		0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0, 0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0, 0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8,
1992/1107/sys/src/9/port/devbit.c:2148,2152 – 1992/1108/sys/src/9/port/devbit.c:2148,2152
1992/1106		e = p + l; for(; p < e; p++) *p = cswizzle[*p];
1992/1108		*p = bitrevtab[*p];
1990/0324		}