65 lines
1.3 KiB
C
65 lines
1.3 KiB
C
/* -*-comment-start: "//";comment-end:""-*-
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* GNU Mes --- Maxwell Equations of Software
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* Copyright © 2018 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
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*
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* This file is part of GNU Mes.
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*
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* GNU Mes is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or (at
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* your option) any later version.
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*
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* GNU Mes is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Mes. If not, see <http://www.gnu.org/licenses/>.
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*/
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struct bits
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{
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int one:1, two:1, four:1, eightsixteen:2;
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};
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union foo
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{
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struct bits b;
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int i;
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};
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int
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main ()
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{
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union foo f;
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f.i = 1;
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f.b.one = 1;
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if (f.i != 1)
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return 1;
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f.b.two = 1;
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if (f.i != 3)
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return f.i;
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f.b.four = 1;
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if (f.i != 7)
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return 3;
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f.b.eightsixteen = 3;
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if (f.i != 31)
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return 4;
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f.i = 1;
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f.b.one = 0;
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if (f.i)
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return 5;
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f.i = 24;
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f.b.eightsixteen = 0;
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if (f.i)
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return 6;
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f.i = 8;
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f.b.eightsixteen = 2;
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if (f.i != 16)
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return 7;
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return 0;
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}
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