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fenv.h revision 1.2 
      1 /*	$NetBSD: fenv.h,v 1.2 2014/01/29 00:22:09 matt Exp $	*/
      2 
      3 /*
      4  * Based on ieeefp.h written by J.T. Conklin, Apr 28, 1995
      5  * Public domain.
      6  */
      7 
      8 #ifndef _ARM_FENV_H_
      9 #define _ARM_FENV_H_
     10 
     11 #ifdef __ARM_PCS_AAPCS64
     12 /* AArch64 split FPSCR into two registers FPCR and FPSR */
     13 typedef struct {
     14 	unsigned int __fpcr;
     15 	unsigned int __fpsr;
     16 } fenv_t;
     17 #else
     18 typedef int fenv_t;		/* FPSCR */
     19 #endif
     20 typedef int fexcept_t;
     21 
     22 #define	FE_INVALID	0x01	/* invalid operation exception */
     23 #define	FE_DIVBYZERO	0x02	/* divide-by-zero exception */
     24 #define	FE_OVERFLOW	0x04	/* overflow exception */
     25 #define	FE_UNDERFLOW	0x08	/* underflow exception */
     26 #define	FE_INEXACT	0x10	/* imprecise (loss of precision; "inexact") */
     27 
     28 #define	FE_ALL_EXCEPT	0x1f
     29 
     30 #define	FE_TONEAREST	0	/* round to nearest representable number */
     31 #define	FE_UPWARD	1	/* round toward positive infinity */
     32 #define	FE_DOWNWARD	2	/* round toward negative infinity */
     33 #define	FE_TOWARDZERO	3	/* round to zero (truncate) */
     34 
     35 __BEGIN_DECLS
     36 
     37 /* Default floating-point environment */
     38 extern const fenv_t	__fe_dfl_env;
     39 #define FE_DFL_ENV	(&__fe_dfl_env)
     40 
     41 __END_DECLS
     42 
     43 #endif /* _ARM_FENV_H_ */
     44