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#ifndef BANG_H_
#define BANG_H_
#include <nds.h>
// Read and write individual bytes from a 32-bit value.
#define SETHH(v,h) v = h << 24 | (v & 0x00ffffff)
#define SETHL(v,l) v = l << 16 | (v & 0xff00ffff)
#define SETLH(v,h) v = h << 8 | (v & 0xffff00ff)
#define SETLL(v,l) v = l | (v & 0xffffff00)
#define GETHH(v) (u8)((v) >> 24)
#define GETHL(v) (u8)((v) >> 16)
#define GETLH(v) (u8)((v) >> 8)
#define GETLL(v) (u8)((v) )
// Aliases for use on 16-bit values.
#define SETH(v,h) SETLH(v,h)
#define SETL(v,l) SETLL(v,l)
#define GETH(v) GETLH(v)
#define GETL(v) GETLL(v)
// Test if all bits of a mask are set in a value.
#define TEST(v,m) ((v & m) == m)
// Convert a C-style boolean to a Bedrock-style boolean.
#define BOOL(v) ((u8)-(v))
// Merge two bytes together as a double.
#define DOUBLE(h,l) ((u16)(h) << 8 | (u16)(l))
// Extract the high and low bytes of a double.
#define HIGH(v) (u8)(v >> 8)
#define LOW(v) (u8)(v)
// Find the highest or lowest value of a pair.
#define MAX(x,y) (x>y ? x : y)
#define MIN(x,y) (x<y ? x : y)
// Functions.
u8 ROL1(u8 v, u8 d);
u16 ROLD(u16 v, u8 d);
u8 ROR1(u8 v, u8 d);
u16 RORD(u16 v, u8 d);
#endif
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