1 /* - 2 * Written by J.T. Conklin, Apr 6, 1995 3 * Public domain. 4 * $NetBSD: ieeefp.h,v 1.2 1999/07/07 01:52:26 danw Exp $ 5 */ 6 7 #ifndef _MACHINE_IEEEFP_H_ 8 #define _MACHINE_IEEEFP_H_ 9 10 #include <sys/cdefs.h> 11 12 /* Deprecated historical FPU control interface */ 13 14 typedef int fp_except_t; 15 #define FP_X_IMP 0x01 /* imprecise (loss of precision) */ 16 #define FP_X_DZ 0x02 /* divide-by-zero exception */ 17 #define FP_X_UFL 0x04 /* underflow exception */ 18 #define FP_X_OFL 0x08 /* overflow exception */ 19 #define FP_X_INV 0x10 /* invalid operation exception */ 20 21 typedef enum { 22 FP_RN=0, /* round to nearest representable number */ 23 FP_RZ=1, /* round to zero (truncate) */ 24 FP_RP=2, /* round toward positive infinity */ 25 FP_RM=3 /* round toward negative infinity */ 26 } fp_rnd_t; 27 28 __BEGIN_DECLS 29 extern fp_rnd_t fpgetround(void); 30 extern fp_rnd_t fpsetround(fp_rnd_t); 31 extern fp_except_t fpgetmask(void); 32 extern fp_except_t fpsetmask(fp_except_t); 33 extern fp_except_t fpgetsticky(void); 34 __END_DECLS 35 36 #endif /* _MACHINE_IEEEFP_H_ */ 37