libdecnumber/decLibrary.c

   1 /* Temporary library support for decimal floating point.
   2    Copyright (C) 2005-2018 Free Software Foundation, Inc.
   3
   4    This file is part of GCC.
   5
   6    GCC is free software; you can redistribute it and/or modify it
   7    under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3, or (at your option)
   9    any later version.
  10
  11    GCC is distributed in the hope that it will be useful, but WITHOUT
  12    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  13    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  14    License for more details.
  15
  16 Under Section 7 of GPL version 3, you are granted additional
  17 permissions described in the GCC Runtime Library Exception, version
  18 3.1, as published by the Free Software Foundation.
  19
  20 You should have received a copy of the GNU General Public License and
  21 a copy of the GCC Runtime Library Exception along with this program;
  22 see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  23 <http://www.gnu.org/licenses/>.  */
  24
  25 #include "dconfig.h"
  26 #include "decContext.h"
  27 #include "decimal128.h"
  28 #include "decimal64.h"
  29 #include "decimal32.h"
  30
  31 void __host_to_ieee_32 (_Decimal32, decimal32 *);
  32 void __host_to_ieee_64 (_Decimal64, decimal64 *);
  33 void __host_to_ieee_128 (_Decimal128, decimal128 *);
  34
  35 extern int isinfd32 (_Decimal32);
  36 extern int isinfd64 (_Decimal64);
  37 extern int isinfd128 (_Decimal128);
  38 uint32_t __dec_byte_swap (uint32_t);
  39
  40 int
  41 isinfd32 (_Decimal32 arg)
  42 {
  43   decNumber dn;
  44   decimal32 d32;
  45
  46   __host_to_ieee_32 (arg, &d32);
  47   decimal32ToNumber (&d32, &dn);
  48   return (decNumberIsInfinite (&dn));
  49 }
  50
  51 int
  52 isinfd64 (_Decimal64 arg)
  53 {
  54   decNumber dn;
  55   decimal64 d64;
  56
  57   __host_to_ieee_64 (arg, &d64);
  58   decimal64ToNumber (&d64, &dn);
  59   return (decNumberIsInfinite (&dn));
  60 }
  61
  62 int
  63 isinfd128 (_Decimal128 arg)
  64 {
  65   decNumber dn;
  66   decimal128 d128;
  67
  68   __host_to_ieee_128 (arg, &d128);
  69   decimal128ToNumber (&d128, &dn);
  70   return (decNumberIsInfinite (&dn));
  71 }