46 lines
1.4 KiB
C
46 lines
1.4 KiB
C
/* Software floating-point emulation.
|
|
Truncate IEEE quad into IEEE double
|
|
Copyright (C) 1997,1999 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, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include "soft-fp.h"
|
|
#include "double.h"
|
|
#include "quad.h"
|
|
|
|
double __trunctfdf2(long double a)
|
|
{
|
|
FP_DECL_EX;
|
|
FP_DECL_Q(A);
|
|
FP_DECL_D(R);
|
|
double r;
|
|
|
|
FP_INIT_ROUNDMODE;
|
|
FP_UNPACK_Q(A, a);
|
|
#if (2 * _FP_W_TYPE_SIZE) < _FP_FRACBITS_Q
|
|
FP_CONV(D,Q,2,4,R,A);
|
|
#else
|
|
FP_CONV(D,Q,1,2,R,A);
|
|
#endif
|
|
FP_PACK_D(r, R);
|
|
FP_HANDLE_EXCEPTIONS;
|
|
|
|
return r;
|
|
}
|