2 * Copyright (c) 1980, 1993
3 * The Regents of the University of California. All rights reserved.
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6 * modification, are permitted provided that the following conditions
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13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
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18 * may be used to endorse or promote products derived from this software
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30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 static char sccsid[] = "@(#)utility.c 8.1 (Berkeley) 5/31/93";
38 static const char rcsid[] =
43 ** ASSORTED UTILITY ROUTINES
49 ** Moves a block of storage of length `l' bytes from the data
50 ** area pointed to by `a' to the area pointed to by `b'.
51 ** Returns the address of the byte following the `b' field.
52 ** Overflow of `b' is not tested.
72 ** STRING EQUALITY TEST
73 ** null-terminated strings `a' and `b' are tested for
75 ** returns one if equal, zero otherwise.
95 ** The strings `s1' and `s2' are concatenated and stored into
96 ** `s3'. It is ok for `s1' to equal `s3', but terrible things
97 ** will happen if `s2' equals `s3'. The return value is is a
98 ** pointer to the end of `s3' field.
101 char *concat(s1, s2, s3)
120 ** FIND STRING LENGTH
122 ** The length of string `s' (excluding the null byte which
123 ** terminates the string) is returned.
144 syserr(p0, p1, p2, p3, p4, p5)
148 printf("\n\07TREK SYSERR: ");
149 printf(p0, p1, p2, p3, p4, p5);
152 printf("\tsystem error %d\n", errno);