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ieeefp.h revision 1.1.142.1 
      1 /*	$NetBSD: ieeefp.h,v 1.1.142.1 2008/10/19 22:15:41 haad Exp $	*/
      2 
      3 /*
      4  * Based on ieeefp.h written by J.T. Conklin, Apr 28, 1995
      5  * Public domain.
      6  */
      7 
      8 #ifndef _ARM32_IEEEFP_H_
      9 #define _ARM32_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 
     24 #define	FE_ALL_EXCEPT	0x1f
     25 
     26 #define	FE_TONEAREST	0	/* round to nearest representable number */
     27 #define	FE_UPWARD	1	/* round toward positive infinity */
     28 #define	FE_DOWNWARD	2	/* round toward negative infinity */
     29 #define	FE_TOWARDZERO	3	/* round to zero (truncate) */
     30 
     31 #if !defined(_ISOC99_SOURCE)
     32 
     33 /* Exception type (used by fpsetmask() et al.) */
     34 
     35 typedef int fp_except;
     36 
     37 /* Bit defines for fp_except */
     38 
     39 #define	FP_X_INV	FE_INVALID	/* invalid operation exception */
     40 #define	FP_X_DZ		FE_DIVBYZERO	/* divide-by-zero exception */
     41 #define	FP_X_OFL	FE_OVERFLOW	/* overflow exception */
     42 #define	FP_X_UFL	FE_UNDERFLOW	/* underflow exception */
     43 #define	FP_X_IMP	FE_INEXACT	/* imprecise (prec. loss; "inexact") */
     44 
     45 /* Rounding modes */
     46 
     47 typedef enum {
     48     FP_RN=FE_TONEAREST,		/* round to nearest representable number */
     49     FP_RP=FE_UPWARD,		/* round toward positive infinity */
     50     FP_RM=FE_DOWNWARD,		/* round toward negative infinity */
     51     FP_RZ=FE_TOWARDZERO		/* round to zero (truncate) */
     52 } fp_rnd;
     53 
     54 #endif /* !_ISOC99_SOURCE */
     55 
     56 #endif /* _NETBSD_SOURCE || _ISOC99_SOURCE */
     57 
     58 #endif /* _ARM32_IEEEFP_H_ */
     59