xref: /plan9/power/include/u.h (revision e94a8e9b44de11e62dfd4566245554f8bf8e0295)

#define nil		((void*)0)
typedef	unsigned short	ushort;
typedef	unsigned char	uchar;
typedef	unsigned long	ulong;
typedef	unsigned int	uint;
typedef	  signed char	schar;
typedef	long long	vlong;
typedef	unsigned long long uvlong;
typedef unsigned long	uintptr;
typedef unsigned long	usize;
typedef	uint		Rune;
typedef union FPdbleword FPdbleword;
typedef long		jmp_buf[2];
#define	JMPBUFSP	0
#define	JMPBUFPC	1
#define	JMPBUFDPC	0
typedef unsigned int	mpdigit;	/* for /sys/include/mp.h */
typedef unsigned char	u8int;
typedef unsigned short	u16int;
typedef unsigned int	u32int;
typedef unsigned long long u64int;

/* FPSCR */
#define	FPSFX	(1<<31)	/* exception summary (sticky) */
#define	FPSEX	(1<<30)	/* enabled exception summary */
#define	FPSVX	(1<<29)	/* invalid operation exception summary */
#define	FPSOX	(1<<28)	/* overflow exception OX (sticky) */
#define	FPSUX	(1<<27)	/* underflow exception UX (sticky) */
#define	FPSZX	(1<<26)	/* zero divide exception ZX (sticky) */
#define	FPSXX	(1<<25)	/* inexact exception XX (sticky) */
#define	FPSVXSNAN (1<<24)	/* invalid operation exception for SNaN (sticky) */
#define	FPSVXISI (1<<23)	/* invalid operation exception for ∞-∞ (sticky) */
#define	FPSVXIDI (1<<22)	/* invalid operation exception for ∞/∞ (sticky) */
#define	FPSVXZDZ (1<<21)	/* invalid operation exception for 0/0 (sticky) */
#define	FPSVXIMZ (1<<20)	/* invalid operation exception for ∞*0 (sticky) */
#define	FPSVXVC	(1<<19)	/* invalid operation exception for invalid compare (sticky) */
#define	FPSFR	(1<<18)	/* fraction rounded */
#define	FPSFI	(1<<17)	/* fraction inexact */
#define	FPSFPRF	(1<<16)	/* floating point result class */
#define	FPSFPCC	(0xF<<12)	/* <, >, =, unordered */
#define	FPVXCVI	(1<<8)	/* enable exception for invalid integer convert (sticky) */
#define	FPVE	(1<<7)	/* invalid operation exception enable */
#define	FPOVFL	(1<<6)	/* enable overflow exceptions */
#define	FPUNFL	(1<<5)	/* enable underflow */
#define	FPZDIV	(1<<4)	/* enable zero divide */
#define	FPINEX	(1<<3)	/* enable inexact exceptions */
#define	FPRMASK	(3<<0)	/* rounding mode */
#define	FPRNR	(0<<0)
#define	FPRZ	(1<<0)
#define	FPRPINF	(2<<0)
#define	FPRNINF	(3<<0)
#define	FPPEXT	0
#define	FPPSGL	0
#define	FPPDBL	0
#define	FPPMASK	0
#define	FPINVAL	FPVE

#define	FPAOVFL	FPSOX
#define	FPAINEX	FPSXX
#define	FPAUNFL	FPSUX
#define	FPAZDIV	FPSZX
#define	FPAINVAL	FPSVX

union FPdbleword
{
	double	x;
	struct {	/* big endian */
		ulong hi;
		ulong lo;
	};
};

typedef	char*	va_list;
#define va_start(list, start) list =\
	(sizeof(start) < 4?\
		(char*)((int*)&(start)+1):\
		(char*)(&(start)+1))
#define va_end(list)\
	USED(list)
#define va_arg(list, mode)\
	((sizeof(mode) <= 4)?\
		((list += 4), (mode*)list)[-1]:\
	(signof(mode) != signof(double))?\
		((list += sizeof(mode)), (mode*)list)[-1]:\
		((list = (char*)((uintptr)(list+7) & ~7) + sizeof(mode)), (mode*)list)[-1])