/*    NetWinder Floating Point Emulator    (c) Rebel.COM, 1998,1999    Direct questions, comments to Scott Bambrough <scottb@netwinder.org>    This program is free software; you can redistribute it and/or modify    it under the terms of the GNU General Public License as published by    the Free Software Foundation; either version 2 of the License, or    (at your option) any later version.    This program is distributed in the hope that it will be useful,    but WITHOUT ANY WARRANTY; without even the implied warranty of    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the    GNU General Public License for more details.    You should have received a copy of the GNU General Public License    along with this program; if not, write to the Free Software    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.*/#include "fpa11.h"#include "softfloat.h"#include "fpopcode.h"floatx80 floatx80_exp(floatx80 Fm);floatx80 floatx80_ln(floatx80 Fm);floatx80 floatx80_sin(floatx80 rFm);floatx80 floatx80_cos(floatx80 rFm);floatx80 floatx80_arcsin(floatx80 rFm);floatx80 floatx80_arctan(floatx80 rFm);floatx80 floatx80_log(floatx80 rFm);floatx80 floatx80_tan(floatx80 rFm);floatx80 floatx80_arccos(floatx80 rFm);floatx80 floatx80_pow(floatx80 rFn,floatx80 rFm);floatx80 floatx80_pol(floatx80 rFn,floatx80 rFm);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;}#if 0floatx80 floatx80_exp(floatx80 Fm){//series}floatx80 floatx80_ln(floatx80 Fm){//series}floatx80 floatx80_sin(floatx80 rFm){//series}floatx80 floatx80_cos(floatx80 rFm){//series}floatx80 floatx80_arcsin(floatx80 rFm){//series}floatx80 floatx80_arctan(floatx80 rFm){  //series}floatx80 floatx80_log(floatx80 rFm){  return floatx80_div(floatx80_ln(rFm),getExtendedConstant(7));}floatx80 floatx80_tan(floatx80 rFm){  return floatx80_div(floatx80_sin(rFm),floatx80_cos(rFm));}floatx80 floatx80_arccos(floatx80 rFm){   //return floatx80_sub(halfPi,floatx80_arcsin(rFm));}floatx80 floatx80_pow(floatx80 rFn,floatx80 rFm){  return floatx80_exp(floatx80_mul(rFm,floatx80_ln(rFn)));}floatx80 floatx80_pol(floatx80 rFn,floatx80 rFm){  return floatx80_arctan(floatx80_div(rFn,rFm));}#endif