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Annotation of 43BSDTahoe/ucb/window/wwalloc.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1983 Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms are permitted
                      6:  * provided that the above copyright notice and this paragraph are
                      7:  * duplicated in all such forms and that any documentation,
                      8:  * advertising materials, and other materials related to such
                      9:  * distribution and use acknowledge that the software was developed
                     10:  * by the University of California, Berkeley.  The name of the
                     11:  * University may not be used to endorse or promote products derived
                     12:  * from this software without specific prior written permission.
                     13:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
                     14:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
                     15:  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     16:  */
                     17: 
                     18: #ifndef lint
                     19: static char sccsid[] = "@(#)wwalloc.c  3.9 (Berkeley) 6/29/88";
                     20: #endif /* not lint */
                     21: 
                     22: #include "ww.h"
                     23: 
                     24: char **
                     25: wwalloc(row, col, nrow, ncol, size)
                     26: {
                     27:        register char *p, **pp;
                     28:        register int i;
                     29: 
                     30:        /* fast, call malloc only once */
                     31:        pp = (char **)
                     32:                malloc((unsigned) sizeof (char **) * nrow + size * nrow * ncol);
                     33:        if (pp == 0) {
                     34:                wwerrno = WWE_NOMEM;
                     35:                return 0;
                     36:        }
                     37:        p = (char *)&pp[nrow];
                     38:        col *= size;
                     39:        size /= sizeof (char);          /* paranoid */
                     40:        size *= ncol;
                     41:        for (i = 0; i < nrow; i++) {
                     42:                pp[i] = p - col;
                     43:                p += size;
                     44:        }
                     45:        return pp - row;
                     46: }
                     47: 
                     48: wwfree(p, row)
                     49: register char **p;
                     50: {
                     51:        free((char *)(p + row));
                     52: }

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