1 /* $NetBSD: ieeefp.h,v 1.2 2008/08/05 16:47:41 matt 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