sys/arch/arm/include/ieeefp.h

   1 /*      $NetBSD: ieeefp.h,v 1.2 2008/08/05 16:47:41 matt Exp $  */
   2
   3 /*
   4  * Based on ieeefp.h written by J.T. Conklin, Apr 28, 1995
   5  * Public domain.
   6  */
   7
   8 #ifndef _ARM32_IEEEFP_H_
   9 #define _ARM32_IEEEFP_H_
  10
  11 #include <sys/featuretest.h>
  12
  13 #if defined(_NETBSD_SOURCE) || defined(_ISOC99_SOURCE)
  14
  15 typedef int fenv_t;
  16 typedef int fexcept_t;
  17
  18 #define FE_INVALID      0x01    /* invalid operation exception */
  19 #define FE_DIVBYZERO    0x02    /* divide-by-zero exception */
  20 #define FE_OVERFLOW     0x04    /* overflow exception */
  21 #define FE_UNDERFLOW    0x08    /* underflow exception */
  22 #define FE_INEXACT      0x10    /* imprecise (loss of precision; "inexact") */
  23
  24 #define FE_ALL_EXCEPT   0x1f
  25
  26 #define FE_TONEAREST    0       /* round to nearest representable number */
  27 #define FE_UPWARD       1       /* round toward positive infinity */
  28 #define FE_DOWNWARD     2       /* round toward negative infinity */
  29 #define FE_TOWARDZERO   3       /* round to zero (truncate) */
  30
  31 #if !defined(_ISOC99_SOURCE)
  32
  33 /* Exception type (used by fpsetmask() et al.) */
  34
  35 typedef int fp_except;
  36
  37 /* Bit defines for fp_except */
  38
  39 #define FP_X_INV        FE_INVALID      /* invalid operation exception */
  40 #define FP_X_DZ         FE_DIVBYZERO    /* divide-by-zero exception */
  41 #define FP_X_OFL        FE_OVERFLOW     /* overflow exception */
  42 #define FP_X_UFL        FE_UNDERFLOW    /* underflow exception */
  43 #define FP_X_IMP        FE_INEXACT      /* imprecise (prec. loss; "inexact") */
  44
  45 /* Rounding modes */
  46
  47 typedef enum {
  48     FP_RN=FE_TONEAREST,         /* round to nearest representable number */
  49     FP_RP=FE_UPWARD,            /* round toward positive infinity */
  50     FP_RM=FE_DOWNWARD,          /* round toward negative infinity */
  51     FP_RZ=FE_TOWARDZERO         /* round to zero (truncate) */
  52 } fp_rnd;
  53
  54 #endif /* !_ISOC99_SOURCE */
  55
  56 #endif /* _NETBSD_SOURCE || _ISOC99_SOURCE */
  57
  58 #endif /* _ARM32_IEEEFP_H_ */