| /* Software floating-point emulation. |
| Return a - b |
| Copyright (C) 1997-2019 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Richard Henderson (rth@cygnus.com) and |
| Jakub Jelinek (jj@ultra.linux.cz). |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| In addition to the permissions in the GNU Lesser General Public |
| License, the Free Software Foundation gives you unlimited |
| permission to link the compiled version of this file into |
| combinations with other programs, and to distribute those |
| combinations without any restriction coming from the use of this |
| file. (The Lesser General Public License restrictions do apply in |
| other respects; for example, they cover modification of the file, |
| and distribution when not linked into a combine executable.) |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include "soft-fp.h" |
| #include "double.h" |
| |
| DFtype |
| __subdf3 (DFtype a, DFtype b) |
| { |
| FP_DECL_EX; |
| FP_DECL_D (A); |
| FP_DECL_D (B); |
| FP_DECL_D (R); |
| DFtype r; |
| |
| FP_INIT_ROUNDMODE; |
| FP_UNPACK_SEMIRAW_D (A, a); |
| FP_UNPACK_SEMIRAW_D (B, b); |
| FP_SUB_D (R, A, B); |
| FP_PACK_SEMIRAW_D (r, R); |
| FP_HANDLE_EXCEPTIONS; |
| |
| return r; |
| } |