1 /*- 2 * Based on sys/sparc64/include/ieeefp.h 3 * Public domain. 4 * $FreeBSD$ 5 */ 6 7 #ifndef _MACHINE_IEEEFP_H_ 8 #define _MACHINE_IEEEFP_H_ 9 10 /* Deprecated FPU control interface */ 11 12 /* FP exception codes */ 13 #define FP_EXCEPT_INV 8 14 #define FP_EXCEPT_DZ 9 15 #define FP_EXCEPT_OFL 10 16 #define FP_EXCEPT_UFL 11 17 #define FP_EXCEPT_IMP 12 18 #define FP_EXCEPT_DNML 15 19 20 typedef int fp_except_t; 21 22 #define FP_X_INV (1 << FP_EXCEPT_INV) /* invalid operation exception */ 23 #define FP_X_DZ (1 << FP_EXCEPT_DZ) /* divide-by-zero exception */ 24 #define FP_X_OFL (1 << FP_EXCEPT_OFL) /* overflow exception */ 25 #define FP_X_UFL (1 << FP_EXCEPT_UFL) /* underflow exception */ 26 #define FP_X_IMP (1 << FP_EXCEPT_IMP) /* imprecise (loss of precision) */ 27 #define FP_X_DNML (1 << FP_EXCEPT_DNML) /* denormal exception */ 28 29 typedef enum { 30 FP_RN = (0 << 22), /* round to nearest representable number */ 31 FP_RP = (1 << 22), /* round toward positive infinity */ 32 FP_RM = (2 << 22), /* round toward negative infinity */ 33 FP_RZ = (3 << 22) /* round to zero (truncate) */ 34 } fp_rnd_t; 35 36 __BEGIN_DECLS 37 extern fp_rnd_t fpgetround(void); 38 extern fp_rnd_t fpsetround(fp_rnd_t); 39 extern fp_except_t fpgetmask(void); 40 extern fp_except_t fpsetmask(fp_except_t); 41 __END_DECLS 42 43 #endif /* _MACHINE_IEEEFP_H_ */ 44