Home | History | Annotate | Line # | Download | only in include
ieeefp.h revision 1.1 
      1 /* $NetBSD: ieeefp.h,v 1.1 2012/12/26 19:43:10 martin Exp $ */
      2 
      3 /*
      4  * Written by J.T. Conklin, Apr 28, 1995
      5  * Public domain.
      6  */
      7 
      8 #ifndef _IA64_IEEEFP_H_
      9 #define _IA64_IEEEFP_H_
     10 
     11 #include <sys/featuretest.h>
     12 
     13 #if defined(_NETBSD_SOURCE) || defined(_ISOC99_SOURCE)
     14 
     15 typedef int fenv_t;
     16 typedef int fexcept_t;
     17 
     18 #define	FE_INVALID	0x01	/* invalid operation exception */
     19 #define	FE_DIVBYZERO	0x02	/* divide-by-zero exception */
     20 #define	FE_OVERFLOW	0x04	/* overflow exception */
     21 #define	FE_UNDERFLOW	0x08	/* underflow exception */
     22 #define	FE_INEXACT	0x10	/* imprecise (loss of precision; "inexact") */
     23 #define	FE_IOVERFLOW	0x20    /* integer overflow */
     24 
     25 #define	FE_ALL_EXCEPT	0x3f
     26 
     27 /*
     28  * These bits match the fpcr as well as bits 12:11
     29  * in fp operate instructions
     30  */
     31 #define	FE_TOWARDZERO	0	/* round to zero (truncate) */
     32 #define	FE_DOWNWARD	1	/* round toward negative infinity */
     33 #define	FE_TONEAREST	2	/* round to nearest representable number */
     34 #define	FE_UPWARD	3	/* round toward positive infinity */
     35 
     36 #if !defined(_ISOC99_SOURCE)
     37 
     38 typedef int fp_except;
     39 
     40 #define	FP_X_INV	FE_INVALID	/* invalid operation exception */
     41 #define	FP_X_DZ		FE_DIVBYZERO	/* divide-by-zero exception */
     42 #define	FP_X_OFL	FE_OVERFLOW	/* overflow exception */
     43 #define	FP_X_UFL	FE_UNDERFLOW	/* underflow exception */
     44 #define	FP_X_IMP	FE_INEXACT	/* imprecise (prec. loss; "inexact") */
     45 #define	FP_X_IOV	FE_IOVERFLOW	/* integer overflow */
     46 
     47 /*
     48  * fp_rnd bits match the fpcr, below, as well as bits 12:11
     49  * in fp operate instructions
     50  */
     51 typedef enum {
     52     FP_RZ = FE_TOWARDZERO,	/* round to zero (truncate) */
     53     FP_RM = FE_DOWNWARD,	/* round toward negative infinity */
     54     FP_RN = FE_TONEAREST,	/* round to nearest representable number */
     55     FP_RP = FE_UPWARD,		/* round toward positive infinity */
     56     _FP_DYNAMIC=FP_RP
     57 } fp_rnd;
     58 
     59 #endif /* !_ISOC99_SOURCE */
     60 
     61 #endif	/* _NETBSD_SOURCE || _ISOC99_SOURCE */
     62 
     63 #endif /* _IA64_IEEEFP_H_ */
     64 
     65 
     66 
     67 
     68 
     69 
     70 
     71 
     72 
     73 
     74