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1/* Software floating-point emulation: convert to fortran nearest.
2 Copyright (C) 1997-2019 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Richard Henderson (rth@cygnus.com) and
5 Jakub Jelinek (jj@ultra.linux.cz).
6
7 The GNU C Library is free software; you can redistribute it and/or
8 modify it under the terms of the GNU Lesser General Public
9 License as published by the Free Software Foundation; either
10 version 2.1 of the License, or (at your option) any later version.
11
12 The GNU C Library is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Lesser General Public License for more details.
16
17 You should have received a copy of the GNU Lesser General Public
18 License along with the GNU C Library. If not, see
19 <http://www.gnu.org/licenses/>. */
20
21#include "local-soft-fp.h"
22
23long
24_OtsNintXQ (long al, long ah, long _round)
25{
26 FP_DECL_EX;
27 FP_DECL_Q(A); FP_DECL_Q(B); FP_DECL_Q(C);
28 unsigned long r;
29 long s;
30
31 /* If bit 3 is set, then integer overflow detection is requested. */
32 s = _round & 8 ? 1 : -1;
33 _round = _round & 3;
34
35 FP_INIT_ROUNDMODE;
36 AXP_UNPACK_SEMIRAW_Q(A, a);
37
38 /* Build 0.5 * sign(A) */
39 B_e = _FP_EXPBIAS_Q;
40 __FP_FRAC_SET_2 (B, 0, 0);
41 B_s = A_s;
42
43 FP_ADD_Q(C, A, B);
44 _FP_FRAC_SRL_2(C, _FP_WORKBITS);
45 _FP_FRAC_HIGH_RAW_Q(C) &= ~(_FP_W_TYPE)_FP_IMPLBIT_Q;
46 FP_TO_INT_Q(r, C, 64, s);
47 if (s > 0 && (_fex &= FP_EX_INVALID))
48 FP_HANDLE_EXCEPTIONS;
49
50 return r;
51}
52

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