sysdeps/sparc/sparc32/q_dtoq.c

   1 /* Software floating-point emulation.
   2    Return (long double)(a)
   3    Copyright (C) 1997-2019 Free Software Foundation, Inc.
   4    This file is part of the GNU C Library.
   5    Contributed by Richard Henderson (rth@cygnus.com) and
   6                   Jakub Jelinek (jj@ultra.linux.cz).
   7
   8    The GNU C Library is free software; you can redistribute it and/or
   9    modify it under the terms of the GNU Lesser General Public
  10    License as published by the Free Software Foundation; either
  11    version 2.1 of the License, or (at your option) any later version.
  12
  13    The GNU C Library is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16    Lesser General Public License for more details.
  17
  18    You should have received a copy of the GNU Lesser General Public
  19    License along with the GNU C Library; if not, see
  20    <https://www.gnu.org/licenses/>.  */
  21
  22 #include "soft-fp.h"
  23 #include "double.h"
  24 #include "quad.h"
  25
  26 long double _Q_dtoq(const double a)
  27 {
  28   FP_DECL_EX;
  29   FP_DECL_D(A);
  30   FP_DECL_Q(C);
  31   long double c;
  32
  33   FP_INIT_ROUNDMODE;
  34   FP_UNPACK_RAW_D(A, a);
  35 #if _FP_W_TYPE_SIZE < 64
  36   FP_EXTEND(Q,D,4,2,C,A);
  37 #else
  38   FP_EXTEND(Q,D,2,1,C,A);
  39 #endif
  40   FP_PACK_RAW_Q(c, C);
  41   FP_HANDLE_EXCEPTIONS;
  42   return c;
  43 }