sysdeps/alpha/ots_cvtxt.c

   1 /* Software floating-point emulation: floating point truncation.
   2    Copyright (C) 1997-2022 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library.  If not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include "local-soft-fp.h"
  20 #include "double.h"
  21
  22 double
  23 _OtsConvertFloatXT (long al, long ah, long _round)
  24 {
  25   FP_DECL_EX;
  26   FP_DECL_Q(A);
  27   FP_DECL_D(R);
  28   double r;
  29
  30   FP_INIT_ROUNDMODE;
  31   AXP_UNPACK_SEMIRAW_Q(A, a);
  32 #if _FP_W_TYPE_SIZE < 64
  33   FP_TRUNC(D,Q,2,4,R,A);
  34 #else
  35   FP_TRUNC(D,Q,1,2,R,A);
  36 #endif
  37   FP_PACK_SEMIRAW_D(r, R);
  38   FP_HANDLE_EXCEPTIONS;
  39
  40   return r;
  41 }