1 /* $OpenBSD: ieeefp.h,v 1.1 2021/04/23 02:42:16 drahn Exp $ */ 2 /* $NetBSD: ieeefp.h,v 1.1 2001/01/10 19:02:06 bjh21 Exp $ */ 3 4 /* 5 * Based on ieeefp.h written by J.T. Conklin, Apr 28, 1995 6 * Public domain. 7 */ 8 9 #ifndef _MACHINE_IEEEFP_H_ 10 #define _MACHINE_IEEEFP_H_ 11 12 /* FP exception codes */ 13 14 #define FP_EXCEPT_INV 0 15 #define FP_EXCEPT_DZ 1 16 #define FP_EXCEPT_OFL 2 17 #define FP_EXCEPT_UFL 3 18 #define FP_EXCEPT_IMP 4 19 20 /* Exception type (used by fpsetmask() et al.) */ 21 22 typedef int fp_except; 23 24 /* Bit defines for fp_except */ 25 26 #define FP_X_INV (1 << FP_EXCEPT_INV) /* invalid operation exception */ 27 #define FP_X_DZ (1 << FP_EXCEPT_DZ) /* divide-by-zero exception */ 28 #define FP_X_OFL (1 << FP_EXCEPT_OFL) /* overflow exception */ 29 #define FP_X_UFL (1 << FP_EXCEPT_UFL) /* underflow exception */ 30 #define FP_X_IMP (1 << FP_EXCEPT_IMP) /* imprecise (loss of precision; "inexact") */ 31 #define FP_X_MASK 0x1f 32 33 /* Rounding modes */ 34 35 typedef enum { 36 FP_RN=0, /* round to nearest representable number */ 37 FP_RP=1, /* round toward positive infinity */ 38 FP_RM=2, /* round toward negative infinity */ 39 FP_RZ=3 /* round to zero (truncate) */ 40 } fp_rnd; 41 42 #endif /* _MACHINE_IEEEFP_H_ */ 43