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Annotation of 43BSDReno/lib/libpc/blkcpy.c, revision 1.1

1.1     ! root        1: /*-
        !             2:  * Copyright (c) 1979 The 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: (1) source distributions retain this entire copyright
        !             7:  * notice and comment, and (2) distributions including binaries display
        !             8:  * the following acknowledgement:  ``This product includes software
        !             9:  * developed by the University of California, Berkeley and its contributors''
        !            10:  * in the documentation or other materials provided with the distribution
        !            11:  * and in all advertising materials mentioning features or use of this
        !            12:  * software. Neither the name of the University nor the names of its
        !            13:  * contributors may be used to endorse or promote products derived
        !            14:  * from this software without specific prior written permission.
        !            15:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            16:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            17:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            18:  */
        !            19: 
        !            20: #ifndef lint
        !            21: static char sccsid[] = "@(#)blkcpy.c   1.4 (Berkeley) 4/9/90";
        !            22: #endif /* not lint */
        !            23: 
        !            24: blkcpy(from, to, siz)
        !            25:        register char   *from;
        !            26:        register char   *to;
        !            27:        long            siz;
        !            28: {
        !            29:        register int    size = siz;
        !            30: 
        !            31:        if (to < from)
        !            32:                while(size-- > 0)
        !            33:                        *to++ = *from++;
        !            34:        else {
        !            35:                to += size;
        !            36:                from += size;
        !            37:                while(size-- > 0)
        !            38:                        *--to = *--from;
        !            39:        }
        !            40: }

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