ports/sysdeps/alpha/soft-fp/ots_cvttx.c

   1 /* Software floating-point emulation: floating point extension.
   2    Copyright (C) 1997-2014 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Richard Henderson (rth@cygnus.com) and
   5                   Jakub Jelinek (jj@ultra.linux.cz).
   6
   7    The GNU C Library is free software; you can redistribute it and/or
   8    modify it under the terms of the GNU Lesser General Public
   9    License as published by the Free Software Foundation; either
  10    version 2.1 of the License, or (at your option) any later version.
  11
  12    The GNU C Library is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15    Lesser General Public License for more details.
  16
  17    You should have received a copy of the GNU Lesser General Public
  18    License along with the GNU C Library.  If not, see
  19    <http://www.gnu.org/licenses/>.  */
  20
  21 #include "local-soft-fp.h"
  22 #include "double.h"
  23
  24 /* Should never actually be used, since we're extending, but needed
  25    for linkage.  */
  26 #undef FP_ROUNDMODE
  27 #define FP_ROUNDMODE  FP_RND_ZERO
  28
  29 void
  30 _OtsConvertFloatTX(double a)
  31 {
  32   FP_DECL_EX;
  33   FP_DECL_D(A);
  34   FP_DECL_Q(C);
  35   FP_DECL_RETURN(c);
  36
  37   FP_UNPACK_RAW_D(A, a);
  38 #if (2 * _FP_W_TYPE_SIZE) < _FP_FRACBITS_Q
  39   FP_EXTEND(Q,D,4,2,C,A);
  40 #else
  41   FP_EXTEND(Q,D,2,1,C,A);
  42 #endif
  43   FP_PACK_RAW_Q(c, C);
  44   FP_HANDLE_EXCEPTIONS;
  45
  46   FP_RETURN(c);
  47 }