bnes-libretro/nall/endian.hpp
2011-10-14 21:31:24 +02:00

43 lines
1.7 KiB
C++
Executable File

#ifndef NALL_ENDIAN_HPP
#define NALL_ENDIAN_HPP
#include <nall/intrinsics.hpp>
#if defined(ENDIAN_LSB)
//little-endian: uint8_t[] { 0x01, 0x02, 0x03, 0x04 } == 0x04030201
#define order_lsb2(a,b) a,b
#define order_lsb3(a,b,c) a,b,c
#define order_lsb4(a,b,c,d) a,b,c,d
#define order_lsb5(a,b,c,d,e) a,b,c,d,e
#define order_lsb6(a,b,c,d,e,f) a,b,c,d,e,f
#define order_lsb7(a,b,c,d,e,f,g) a,b,c,d,e,f,g
#define order_lsb8(a,b,c,d,e,f,g,h) a,b,c,d,e,f,g,h
#define order_msb2(a,b) b,a
#define order_msb3(a,b,c) c,b,a
#define order_msb4(a,b,c,d) d,c,b,a
#define order_msb5(a,b,c,d,e) e,d,c,b,a
#define order_msb6(a,b,c,d,e,f) f,e,d,c,b,a
#define order_msb7(a,b,c,d,e,f,g) g,f,e,d,c,b,a
#define order_msb8(a,b,c,d,e,f,g,h) h,g,f,e,d,c,b,a
#elif defined(ENDIAN_MSB)
//big-endian: uint8_t[] { 0x01, 0x02, 0x03, 0x04 } == 0x01020304
#define order_lsb2(a,b) b,a
#define order_lsb3(a,b,c) c,b,a
#define order_lsb4(a,b,c,d) d,c,b,a
#define order_lsb5(a,b,c,d,e) e,d,c,b,a
#define order_lsb6(a,b,c,d,e,f) f,e,d,c,b,a
#define order_lsb7(a,b,c,d,e,f,g) g,f,e,d,c,b,a
#define order_lsb8(a,b,c,d,e,f,g,h) h,g,f,e,d,c,b,a
#define order_msb2(a,b) a,b
#define order_msb3(a,b,c) a,b,c
#define order_msb4(a,b,c,d) a,b,c,d
#define order_msb5(a,b,c,d,e) a,b,c,d,e
#define order_msb6(a,b,c,d,e,f) a,b,c,d,e,f
#define order_msb7(a,b,c,d,e,f,g) a,b,c,d,e,f,g
#define order_msb8(a,b,c,d,e,f,g,h) a,b,c,d,e,f,g,h
#else
#error "Unknown endian. Please specify in nall/intrinsics.hpp"
#endif
#endif