libgcc/config/libbid/decimal_globals.c

   1 /* Copyright (C) 2007  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 2, or (at your option) any later
   8 version.
   9
  10 In addition to the permissions in the GNU General Public License, the
  11 Free Software Foundation gives you unlimited permission to link the
  12 compiled version of this file into combinations with other programs,
  13 and to distribute those combinations without any restriction coming
  14 from the use of this file.  (The General Public License restrictions
  15 do apply in other respects; for example, they cover modification of
  16 the file, and distribution when not linked into a combine
  17 executable.)
  18
  19 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  20 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  21 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  22 for more details.
  23
  24 You should have received a copy of the GNU General Public License
  25 along with GCC; see the file COPYING.  If not, write to the Free
  26 Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
  27 02110-1301, USA.  */
  28
  29 #include "bid_conf.h"
  30 #include "bid_functions.h"
  31
  32 #if DECIMAL_GLOBAL_ROUNDING
  33 BID_THREAD _IDEC_round __bid_IDEC_glbround = ROUNDING_TO_NEAREST;
  34
  35 void
  36 __dfp_set_round (int mode)
  37 {
  38   __bid_IDEC_glbround = mode;
  39 }
  40
  41 int
  42 __dfp_get_round (void)
  43 {
  44   return __bid_IDEC_glbround;
  45 }
  46 #endif
  47
  48 #if DECIMAL_GLOBAL_EXCEPTION_FLAGS
  49 BID_THREAD _IDEC_flags __bid_IDEC_glbflags = EXACT_STATUS;
  50
  51 #include <fenv.h>
  52
  53 void
  54 __dfp_clear_except (void)
  55 {
  56   __bid_IDEC_glbflags &= ~FLAG_MASK;
  57 }
  58
  59 int
  60 __dfp_test_except (int mask)
  61 {
  62   int flags = 0;
  63
  64   if ((__bid_IDEC_glbflags & INEXACT_EXCEPTION) != 0)
  65     flags |= mask & FE_INEXACT;
  66   if ((__bid_IDEC_glbflags & UNDERFLOW_EXCEPTION) != 0)
  67     flags |= mask & FE_UNDERFLOW;
  68   if ((__bid_IDEC_glbflags & OVERFLOW_EXCEPTION) != 0)
  69     flags |= mask & FE_OVERFLOW;
  70   if ((__bid_IDEC_glbflags & ZERO_DIVIDE_EXCEPTION) != 0)
  71     flags |= mask & FE_DIVBYZERO;
  72   if ((__bid_IDEC_glbflags & INVALID_EXCEPTION) != 0)
  73     flags |= mask & FE_INVALID;
  74
  75   return flags;
  76 }
  77
  78 void
  79 __dfp_raise_except (int mask)
  80 {
  81   _IDEC_flags flags = 0;
  82
  83   if ((mask & FE_INEXACT) != 0)
  84     flags |= INEXACT_EXCEPTION;
  85   if ((mask & FE_UNDERFLOW) != 0)
  86     flags |= UNDERFLOW_EXCEPTION;
  87   if ((mask & FE_OVERFLOW) != 0)
  88     flags |= OVERFLOW_EXCEPTION;
  89   if ((mask & FE_DIVBYZERO) != 0)
  90     flags |= ZERO_DIVIDE_EXCEPTION;
  91   if ((mask & FE_INVALID) != 0)
  92     flags |= INVALID_EXCEPTION;
  93
  94   __bid_IDEC_glbflags |= flags;
  95 }
  96
  97 #endif
  98
  99 #if DECIMAL_ALTERNATE_EXCEPTION_HANDLING
 100   #if DECIMAL_GLOBAL_EXCEPTION_MASKS
 101     _IDEC_exceptionmasks _IDEC_glbexceptionmasks = _IDEC_allexcmasksset;
 102   #endif
 103   #if DECIMAL_GLOBAL_EXCEPTION_INFO
 104     _IDEC_excepthandling _IDEC_glbexcepthandling;
 105   #endif
 106 #endif