1  /* Copyright (C) 2007-2023 Free Software Foundation, Inc.
       2  
       3  This file is part of GCC.
       4  
       5  GCC is free software; you can redistribute it and/or modify it under
       6  the terms of the GNU General Public License as published by the Free
       7  Software Foundation; either version 3, or (at your option) any later
       8  version.
       9  
      10  GCC is distributed in the hope that it will be useful, but WITHOUT ANY
      11  WARRANTY; without even the implied warranty of MERCHANTABILITY or
      12  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
      13  for more details.
      14  
      15  Under Section 7 of GPL version 3, you are granted additional
      16  permissions described in the GCC Runtime Library Exception, version
      17  3.1, as published by the Free Software Foundation.
      18  
      19  You should have received a copy of the GNU General Public License and
      20  a copy of the GCC Runtime Library Exception along with this program;
      21  see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
      22  <http://www.gnu.org/licenses/>.  */
      23  
      24  #include "bid_internal.h"
      25  #include "bid_gcc_intrinsics.h"
      26  
      27  #if DECIMAL_GLOBAL_ROUNDING
      28  BID_THREAD _IDEC_round _IDEC_glbround = ROUNDING_TO_NEAREST;
      29  
      30  #if DECIMAL_GLOBAL_ROUNDING_ACCESS_FUNCTIONS
      31  void
      32  __dfp_set_round (int mode) {
      33    _IDEC_glbround = mode;
      34  }
      35  
      36  int
      37  __dfp_get_round (void) {
      38    return _IDEC_glbround;
      39  }
      40  #endif
      41  #endif
      42  
      43  #if DECIMAL_GLOBAL_EXCEPTION_FLAGS
      44  BID_THREAD _IDEC_flags _IDEC_glbflags = EXACT_STATUS;
      45  
      46  #if DECIMAL_GLOBAL_EXCEPTION_FLAGS_ACCESS_FUNCTIONS
      47  #include <fenv.h>
      48  
      49  void
      50  __dfp_clear_except (void) {
      51    _IDEC_glbflags &= ~FLAG_MASK;
      52  }
      53  
      54  int
      55  __dfp_test_except (int mask) {
      56    int flags = 0;
      57  
      58    if ((_IDEC_glbflags & INEXACT_EXCEPTION) != 0)
      59      flags |= mask & FE_INEXACT;
      60    if ((_IDEC_glbflags & UNDERFLOW_EXCEPTION) != 0)
      61      flags |= mask & FE_UNDERFLOW;
      62    if ((_IDEC_glbflags & OVERFLOW_EXCEPTION) != 0)
      63      flags |= mask & FE_OVERFLOW;
      64    if ((_IDEC_glbflags & ZERO_DIVIDE_EXCEPTION) != 0)
      65      flags |= mask & FE_DIVBYZERO;
      66    if ((_IDEC_glbflags & INVALID_EXCEPTION) != 0)
      67      flags |= mask & FE_INVALID;
      68  
      69    return flags;
      70  }
      71  
      72  void
      73  __dfp_raise_except (int mask) {
      74    _IDEC_flags flags = 0;
      75  
      76    if ((mask & FE_INEXACT) != 0)
      77      flags |= INEXACT_EXCEPTION;
      78    if ((mask & FE_UNDERFLOW) != 0)
      79      flags |= UNDERFLOW_EXCEPTION;
      80    if ((mask & FE_OVERFLOW) != 0)
      81      flags |= OVERFLOW_EXCEPTION;
      82    if ((mask & FE_DIVBYZERO) != 0)
      83      flags |= ZERO_DIVIDE_EXCEPTION;
      84    if ((mask & FE_INVALID) != 0)
      85      flags |= INVALID_EXCEPTION;
      86  
      87    _IDEC_glbflags |= flags;
      88  }
      89  #endif
      90  #endif
      91  
      92  #if DECIMAL_ALTERNATE_EXCEPTION_HANDLING
      93  #if DECIMAL_GLOBAL_EXCEPTION_MASKS
      94  BID_THREAD _IDEC_exceptionmasks _IDEC_glbexceptionmasks =
      95    _IDEC_allexcmasksset;
      96  #endif
      97  #if DECIMAL_GLOBAL_EXCEPTION_INFO
      98  BID_THREAD _IDEC_excepthandling _IDEC_glbexcepthandling;
      99  #endif
     100  #endif