| /* Software floating-point emulation. |
| (*c) = (long double)(a) |
| Copyright (C) 1997-2014 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. |
| |
| 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" |
| #include "quad.h" |
| |
| void _Qp_dtoq(long double *c, const double a) |
| { |
| FP_DECL_EX; |
| FP_DECL_D(A); |
| FP_DECL_Q(C); |
| |
| FP_INIT_ROUNDMODE; |
| FP_UNPACK_RAW_D(A, a); |
| #if (2 * _FP_W_TYPE_SIZE) < _FP_FRACBITS_Q |
| FP_EXTEND(Q,D,4,2,C,A); |
| #else |
| FP_EXTEND(Q,D,2,1,C,A); |
| #endif |
| FP_PACK_RAW_QP(c, C); |
| QP_HANDLE_EXCEPTIONS(__asm ( |
| " fdtoq %1, %%f60\n" |
| " std %%f60, [%0]\n" |
| " std %%f62, [%0+8]\n" |
| " " : : "r" (c), "e" (a) : QP_CLOBBER)); |
| } |