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ieeefp.h revision 1.7.24.1 
      1 /*	$NetBSD: ieeefp.h,v 1.7.24.1 2017/12/03 11:36:23 jdolecek Exp $	*/
      2 
      3 /*
      4  * Written by J.T. Conklin, Apr 6, 1995
      5  * Modified by Jason R. Thorpe, June 22, 2003
      6  * Public domain.
      7  */
      8 
      9 #ifndef _M68K_IEEEFP_H_
     10 #define _M68K_IEEEFP_H_
     11 
     12 #include <sys/featuretest.h>
     13 
     14 #if defined(_NETBSD_SOURCE) || defined(_ISOC99_SOURCE)
     15 
     16 #include <m68k/fenv.h>
     17 
     18 #if !defined(_ISOC99_SOURCE)
     19 
     20 typedef int fp_except;
     21 
     22 /* adjust for FP_* and FE_* value differences */
     23 #define	__FPE(x) ((x) >> 3)
     24 #define	__FEE(x) ((x) << 3)
     25 #define	__FPR(x) ((x) >> 4)
     26 #define	__FER(x) ((x) << 4)
     27 
     28 #define FP_X_IMP	__FPE(FE_INEXACT)	/* imprecise (loss of precision) */
     29 #define FP_X_DZ		__FPE(FE_DIVBYZERO)	/* divide-by-zero exception */
     30 #define FP_X_UFL	__FPE(FE_UNDERFLOW)	/* underflow exception */
     31 #define FP_X_OFL	__FPE(FE_OVERFLOW)	/* overflow exception */
     32 #define FP_X_INV	__FPE(FE_INVALID)	/* invalid operation exception */
     33 
     34 typedef enum {
     35     FP_RN=__FPR(FE_TONEAREST),	/* round to nearest representable number */
     36     FP_RZ=__FPR(FE_TOWARDZERO),	/* round to zero (truncate) */
     37     FP_RM=__FPR(FE_DOWNWARD),	/* round toward negative infinity */
     38     FP_RP=__FPR(FE_UPWARD)	/* round toward positive infinity */
     39 } fp_rnd;
     40 
     41 typedef enum {
     42     FP_PE=0,			/* extended-precision (64-bit) */
     43     FP_PS=1,			/* single-precision (24-bit) */
     44     FP_PD=2			/* double-precision (53-bit) */
     45 } fp_prec;
     46 
     47 #endif /* !_ISOC99_SOURCE */
     48 
     49 #define	__HAVE_FP_PREC
     50 
     51 #endif	/* _NETBSD_SOURCE || _ISOC99_SOURCE */
     52 
     53 #endif /* _M68K_IEEEFP_H_ */
     54