sys/arch/x86/include/ieeefp.h

   1 /*      $NetBSD: ieeefp.h,v 1.4 2011/03/26 19:52:20 christos Exp $      */
   2
   3 /*
   4  * Written by J.T. Conklin, Apr 6, 1995
   5  * Public domain.
   6  */
   7
   8 #ifndef _X86_IEEEFP_H_
   9 #define _X86_IEEEFP_H_
  10
  11 #include <sys/featuretest.h>
  12 #include <machine/fenv.h>
  13
  14 typedef int fp_except;
  15 #define FP_X_INV        FE_INVALID      /* invalid operation exception */
  16 #define FP_X_DNML       FE_DENORMAL     /* denormalization exception */
  17 #define FP_X_DZ         FE_DIVBYZERO    /* divide-by-zero exception */
  18 #define FP_X_OFL        FE_OVERFLOW     /* overflow exception */
  19 #define FP_X_UFL        FE_UNDERFLOW    /* underflow exception */
  20 #define FP_X_IMP        FE_INEXACT      /* imprecise (loss of precision) */
  21
  22 typedef enum {
  23         FP_RN=FE_TONEAREST,             /* round to nearest representable num */
  24         FP_RM=FE_DOWNWARD,              /* round toward negative infinity */
  25         FP_RP=FE_UPWARD,                /* round toward positive infinity */
  26         FP_RZ=FE_TOWARDZERO             /* round to zero (truncate) */
  27 } fp_rnd;
  28
  29 typedef enum {
  30         FP_PS = 0,                      /* 24 bit (single-precision) */
  31         FP_PRS,                         /* reserved */
  32         FP_PD,                          /* 53 bit (double-precision) */
  33         FP_PE                           /* 64 bit (extended-precision) */
  34 } fp_prec;
  35
  36
  37 #endif /* _X86_IEEEFP_H_ */