Mercurial > hg > CbC > CbC_gcc
diff libgcc/soft-fp/extendsfdf2.c @ 111:04ced10e8804
gcc 7
author | kono |
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date | Fri, 27 Oct 2017 22:46:09 +0900 |
parents | |
children | 1830386684a0 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libgcc/soft-fp/extendsfdf2.c Fri Oct 27 22:46:09 2017 +0900 @@ -0,0 +1,55 @@ +/* Software floating-point emulation. + Return a converted to IEEE double + Copyright (C) 1997-2016 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/>. */ + +#define FP_NO_EXACT_UNDERFLOW +#include "soft-fp.h" +#include "single.h" +#include "double.h" + +DFtype +__extendsfdf2 (SFtype a) +{ + FP_DECL_EX; + FP_DECL_S (A); + FP_DECL_D (R); + DFtype r; + + FP_INIT_EXCEPTIONS; + FP_UNPACK_RAW_S (A, a); +#if _FP_W_TYPE_SIZE < _FP_FRACBITS_D + FP_EXTEND (D, S, 2, 1, R, A); +#else + FP_EXTEND (D, S, 1, 1, R, A); +#endif + FP_PACK_RAW_D (r, R); + FP_HANDLE_EXCEPTIONS; + + return r; +}