79 lines
1.6 KiB
C
79 lines
1.6 KiB
C
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/***************************************************************************
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gb_common_swap_temp.h
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common useful routines template
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Datatype management routines. Conversions between each Gambas datatype,
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and conversions between Gambas datatypes and native datatypes.
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(c) 2000-2007 Benoit Minisini <gambas@users.sourceforge.net>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 1, or (at your option)
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any later version.
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This program 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 this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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***************************************************************************/
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PUBLIC void SWAP_long(int *val)
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{
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char *p = (char *)val;
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char t1, t2;
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t1 = p[0];
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t2 = p[1];
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p[0] = p[3];
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p[1] = p[2];
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p[3] = t1;
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p[2] = t2;
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}
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PUBLIC void SWAP_longs(int *val, int n)
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{
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while (n > 0)
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{
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SWAP_long(val);
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val++;
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n--;
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}
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}
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PUBLIC void SWAP_short(short *val)
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{
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char *p = (char *)val;
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char t;
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t = p[0];
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p[0] = p[1];
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p[1] = t;
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}
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PUBLIC void SWAP_double(double *val)
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{
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char *p = (char *)val;
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char t;
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int i, j;
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for (i = 0; i < 4; i++)
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{
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j = i ^ 7;
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t = p[i];
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p[i] = p[j];
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p[j] = t;
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}
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}
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