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