sysdeps/sparc/sparc32/q_dtoq.c

   1 /* Software floating-point emulation.
   2    Return (long double)(a)
   3    Copyright (C) 1997-2023 Free Software Foundation, Inc.
   4    This file is part of the GNU C Library.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <https://www.gnu.org/licenses/>.  */
  19
  20 #include "soft-fp.h"
  21 #include "double.h"
  22 #include "quad.h"
  23
  24 long double _Q_dtoq(const double a)
  25 {
  26   FP_DECL_EX;
  27   FP_DECL_D(A);
  28   FP_DECL_Q(C);
  29   long double c;
  30
  31   FP_INIT_ROUNDMODE;
  32   FP_UNPACK_RAW_D(A, a);
  33 #if _FP_W_TYPE_SIZE < 64
  34   FP_EXTEND(Q,D,4,2,C,A);
  35 #else
  36   FP_EXTEND(Q,D,2,1,C,A);
  37 #endif
  38   FP_PACK_RAW_Q(c, C);
  39   FP_HANDLE_EXCEPTIONS;
  40   return c;
  41 }