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Diffstat (limited to 'libgcc/soft-fp/truncdfsf2.c')
-rw-r--r-- | libgcc/soft-fp/truncdfsf2.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/libgcc/soft-fp/truncdfsf2.c b/libgcc/soft-fp/truncdfsf2.c new file mode 100644 index 00000000000..bd953912e98 --- /dev/null +++ b/libgcc/soft-fp/truncdfsf2.c @@ -0,0 +1,54 @@ +/* Software floating-point emulation. + Truncate IEEE double into IEEE single + Copyright (C) 1997,1999,2006 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, write to the Free + Software Foundation, 51 Franklin Street, Fifth Floor, Boston, + MA 02110-1301, USA. */ + +#include "soft-fp.h" +#include "single.h" +#include "double.h" + +SFtype __truncdfsf2(DFtype a) +{ + FP_DECL_EX; + FP_DECL_D(A); + FP_DECL_S(R); + SFtype r; + + FP_INIT_ROUNDMODE; + FP_UNPACK_SEMIRAW_D(A, a); +#if _FP_W_TYPE_SIZE < _FP_FRACBITS_D + FP_TRUNC(S,D,1,2,R,A); +#else + FP_TRUNC(S,D,1,1,R,A); +#endif + FP_PACK_SEMIRAW_S(r, R); + FP_HANDLE_EXCEPTIONS; + + return r; +} |