61d5ffaf10
issues in these areas:
.h's installed
.hP's installed
-lcurses interaction
files needed in ~/legal for copyleft reasons.
98 lines
3.0 KiB
C
98 lines
3.0 KiB
C
/* Copyright (C) 1994 Free Software Foundation
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This file is part of the GNU BitString Library. This library is free
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software; you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2, or (at your option)
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any later version.
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This library is distributed in the hope that it will be useful,
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but 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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You should have received a copy of the GNU General Public License
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along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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As a special exception, if you link this library with files
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compiled with a GNU compiler to produce an executable, this does not cause
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the resulting executable to be covered by the GNU General Public License.
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This exception does not however invalidate any other reasons why
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the executable file might be covered by the GNU General Public License. */
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/* Written by Per Bothner (bothner@cygnus.com).
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Based on ideas in the X11 MFB server. */
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#include "bitprims.h"
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#define ONES ((_BS_word)(~0))
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/* Copy LENGTH bits from (starting at SRCBIT) into pdst starting at DSTBIT.
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This will work even if psrc & pdst overlap. */
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void
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_BS_blt (op, pdst, dstbit, psrc, srcbit, length)
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enum _BS_alu op;
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register _BS_word* pdst;
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int dstbit;
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register const _BS_word* psrc;
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int srcbit;
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_BS_size_t length;
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{
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_BS_word ca1, cx1, ca2, cx2;
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switch (op)
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{
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case _BS_alu_clear:
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_BS_clear (pdst, dstbit, length);
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return;
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case _BS_alu_and:
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_BS_and (pdst, dstbit, psrc, srcbit, length);
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return;
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case _BS_alu_andReverse:
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ca1 = ONES; cx1 = 0; ca2 = ONES; cx2 = 0;
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break;
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case _BS_alu_copy:
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_BS_copy (pdst, dstbit, psrc, srcbit, length);
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return;
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case _BS_alu_andInverted:
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ca1 = ONES; cx1 = ONES; ca2 = 0; cx2 = 0;
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break;
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case _BS_alu_noop:
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return;
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case _BS_alu_xor:
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_BS_xor (pdst, dstbit, psrc, srcbit, length);
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return;
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case _BS_alu_or:
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ca1 = ONES; cx1 = ONES; ca2 = ONES; cx2 = 0;
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break;
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case _BS_alu_nor:
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ca1 = ONES; cx1 = ONES; ca2 = ONES; cx2 = ONES;
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break;
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case_BS_alu_equiv:
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ca1 = 0; cx1 = ONES; ca2 = ONES; cx2 = ONES;
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break;
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case _BS_alu_invert:
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_BS_invert (pdst, dstbit, length);
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return;
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case _BS_alu_orReverse:
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ca1 = ONES; cx1 = ONES; ca2 = 0; cx2 = ONES;
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break;
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case _BS_alu_copyInverted:
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ca1 = 0; cx1 = 0; ca2 = ONES; cx2 = ONES;
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break;
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case _BS_alu_orInverted:
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ca1 = ONES; cx1 = 0; ca2 = ONES; cx2 = ONES;
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break;
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case _BS_alu_nand:
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ca1 = ONES; cx1 = 0; ca2 = 0; cx2 = ONES;
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break;
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case _BS_alu_set:
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_BS_set (pdst, dstbit, length);
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return;
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}
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{
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#define COMBINE(dst, src) ((dst) & ((src) & ca1 ^ cx1) ^ ((src) & ca2 ^ cx2))
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#include "bitdo2.h"
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}
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}
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