C++ (Cpp) floatx80_round_to_intの例

コード例 #1

ファイル: wrap.inc.c プロジェクト: CTU-IIG/qemu

static void qemu_extF80M_roundToInt(const extFloat80_t *ap, uint_fast8_t round,
                                    bool exact, extFloat80_t *res)
{
    floatx80 a;
    floatx80 ret;

    a = soft_to_qemu80(*ap);
    qsf.float_rounding_mode = sf_rounding_to_qemu(round);
    ret = floatx80_round_to_int(a, &qsf);
    *res = qemu_to_soft80(ret);
}

コード例 #2

ファイル: extended_cpdo.c プロジェクト: AmesianX/winkvm

unsigned int ExtendedCPDO(const unsigned int opcode)
{
   FPA11 *fpa11 = GET_FPA11();
   floatx80 rFm, rFn;
   unsigned int Fd, Fm, Fn, nRc = 1;

   //printk("ExtendedCPDO(0x%08x)\n",opcode);

   Fm = getFm(opcode);
   if (CONSTANT_FM(opcode))
   {
     rFm = getExtendedConstant(Fm);
   }
   else
   {
     switch (fpa11->fType[Fm])
     {
        case typeSingle:
          rFm = float32_to_floatx80(fpa11->fpreg[Fm].fSingle, &fpa11->fp_status);
        break;

        case typeDouble:
          rFm = float64_to_floatx80(fpa11->fpreg[Fm].fDouble, &fpa11->fp_status);
        break;

        case typeExtended:
          rFm = fpa11->fpreg[Fm].fExtended;
        break;

        default: return 0;
     }
   }

   if (!MONADIC_INSTRUCTION(opcode))
   {
      Fn = getFn(opcode);
      switch (fpa11->fType[Fn])
      {
        case typeSingle:
          rFn = float32_to_floatx80(fpa11->fpreg[Fn].fSingle, &fpa11->fp_status);
        break;

        case typeDouble:
          rFn = float64_to_floatx80(fpa11->fpreg[Fn].fDouble, &fpa11->fp_status);
        break;

        case typeExtended:
          rFn = fpa11->fpreg[Fn].fExtended;
        break;

        default: return 0;
      }
   }

   Fd = getFd(opcode);
   switch (opcode & MASK_ARITHMETIC_OPCODE)
   {
      /* dyadic opcodes */
      case ADF_CODE:
         fpa11->fpreg[Fd].fExtended = floatx80_add(rFn,rFm, &fpa11->fp_status);
      break;

      case MUF_CODE:
      case FML_CODE:
         fpa11->fpreg[Fd].fExtended = floatx80_mul(rFn,rFm, &fpa11->fp_status);
      break;

      case SUF_CODE:
         fpa11->fpreg[Fd].fExtended = floatx80_sub(rFn,rFm, &fpa11->fp_status);
      break;

      case RSF_CODE:
         fpa11->fpreg[Fd].fExtended = floatx80_sub(rFm,rFn, &fpa11->fp_status);
      break;

      case DVF_CODE:
      case FDV_CODE:
         fpa11->fpreg[Fd].fExtended = floatx80_div(rFn,rFm, &fpa11->fp_status);
      break;

      case RDF_CODE:
      case FRD_CODE:
         fpa11->fpreg[Fd].fExtended = floatx80_div(rFm,rFn, &fpa11->fp_status);
      break;

#if 0
      case POW_CODE:
         fpa11->fpreg[Fd].fExtended = floatx80_pow(rFn,rFm);
      break;

      case RPW_CODE:
         fpa11->fpreg[Fd].fExtended = floatx80_pow(rFm,rFn);
      break;
#endif

      case RMF_CODE:
         fpa11->fpreg[Fd].fExtended = floatx80_rem(rFn,rFm, &fpa11->fp_status);
      break;

#if 0
      case POL_CODE:
         fpa11->fpreg[Fd].fExtended = floatx80_pol(rFn,rFm);
      break;
#endif

      /* monadic opcodes */
      case MVF_CODE:
         fpa11->fpreg[Fd].fExtended = rFm;
      break;

      case MNF_CODE:
         rFm.high ^= 0x8000;
         fpa11->fpreg[Fd].fExtended = rFm;
      break;

      case ABS_CODE:
         rFm.high &= 0x7fff;
         fpa11->fpreg[Fd].fExtended = rFm;
      break;

      case RND_CODE:
      case URD_CODE:
         fpa11->fpreg[Fd].fExtended = floatx80_round_to_int(rFm, &fpa11->fp_status);
      break;

      case SQT_CODE:
         fpa11->fpreg[Fd].fExtended = floatx80_sqrt(rFm, &fpa11->fp_status);
      break;

#if 0
      case LOG_CODE:
         fpa11->fpreg[Fd].fExtended = floatx80_log(rFm);
      break;

      case LGN_CODE:
         fpa11->fpreg[Fd].fExtended = floatx80_ln(rFm);
      break;

      case EXP_CODE:
         fpa11->fpreg[Fd].fExtended = floatx80_exp(rFm);
      break;

      case SIN_CODE:
         fpa11->fpreg[Fd].fExtended = floatx80_sin(rFm);
      break;

      case COS_CODE:
         fpa11->fpreg[Fd].fExtended = floatx80_cos(rFm);
      break;

      case TAN_CODE:
         fpa11->fpreg[Fd].fExtended = floatx80_tan(rFm);
      break;

      case ASN_CODE:
         fpa11->fpreg[Fd].fExtended = floatx80_arcsin(rFm);
      break;

      case ACS_CODE:
         fpa11->fpreg[Fd].fExtended = floatx80_arccos(rFm);
      break;

      case ATN_CODE:
         fpa11->fpreg[Fd].fExtended = floatx80_arctan(rFm);
      break;
#endif

      case NRM_CODE:
      break;

      default:
      {
        nRc = 0;
      }
   }

   if (0 != nRc) fpa11->fType[Fd] = typeExtended;
   return nRc;
}