libgcc/config/rs6000/trunctfkf2-sw.c

   1 /* Software IEEE 128-bit floating-point emulation for PowerPC.
   2
   3    Copyright (C) 2016 Free Software Foundation, Inc.
   4    This file is part of the GNU C Library.
   5    Contributed by Michael Meissner (meissner@linux.vnet.ibm.com)
   6    Code is based on the main soft-fp library written by:
   7         Richard Henderson (rth@cygnus.com) and
   8         Jakub Jelinek (jj@ultra.linux.cz).
   9
  10    The GNU C Library is free software; you can redistribute it and/or
  11    modify it under the terms of the GNU Lesser General Public
  12    License as published by the Free Software Foundation; either
  13    version 2.1 of the License, or (at your option) any later version.
  14
  15    In addition to the permissions in the GNU Lesser General Public
  16    License, the Free Software Foundation gives you unlimited
  17    permission to link the compiled version of this file into
  18    combinations with other programs, and to distribute those
  19    combinations without any restriction coming from the use of this
  20    file.  (The Lesser General Public License restrictions do apply in
  21    other respects; for example, they cover modification of the file,
  22    and distribution when not linked into a combine executable.)
  23
  24    The GNU C Library is distributed in the hope that it will be useful,
  25    but WITHOUT ANY WARRANTY; without even the implied warranty of
  26    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  27    Lesser General Public License for more details.
  28
  29    You should have received a copy of the GNU Lesser General Public
  30    License along with the GNU C Library; if not, see
  31    <http://www.gnu.org/licenses/>.  */
  32
  33 /* Convert IBM long double to IEEE 128-bit floating point.  */
  34
  35 #ifdef __FLOAT128_HARDWARE__
  36 #error "This module must not be compiled with IEEE 128-bit hardware support"
  37 #endif
  38
  39 #include "soft-fp.h"
  40 #include "quad-float128.h"
  41
  42 #ifndef FLOAT128_HW_INSNS
  43 #define __trunctfkf2_sw __trunctfkf2
  44 #endif
  45
  46 __float128
  47 __trunctfkf2_sw (IBM128_TYPE value)
  48 {
  49   __float128 ret;
  50
  51   CVT_IBM128_TO_FLOAT128 (ret, value);
  52   return ret;
  53 }