libgcc/config/libbid/bid_decimal_globals.c

   1 /* Copyright (C) 2007-2018 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