glibc/sysdeps/alpha/soft-fp/ots_cvttx.c

48 lines
1.4 KiB
C

/* Software floating-point emulation: floating point extension.
Copyright (C) 1997-2017 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 "local-soft-fp.h"
#include "double.h"
/* Should never actually be used, since we're extending, but needed
for linkage. */
#undef FP_ROUNDMODE
#define FP_ROUNDMODE FP_RND_ZERO
void
_OtsConvertFloatTX(double a)
{
FP_DECL_EX;
FP_DECL_D(A);
FP_DECL_Q(C);
AXP_DECL_RETURN_Q(c);
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
AXP_PACK_RAW_Q(c, C);
FP_HANDLE_EXCEPTIONS;
AXP_RETURN_Q(c);
}