1 static char Sccsid[] = "@(#)patoi.c	1.2	02/15/87";
2 /*
3 	Function to convert ascii string to integer.  Converts
4 	positive numbers only.  Returns -1 if non-numeric
5 	character encountered.
6 */
7 
8 patoi(s)
9 register char *s;
10 {
11 	register int i;
12 
13 	i = 0;
14 	while(*s >= '0' && *s <= '9') i = 10 * i + *s++ - '0';
15 
16 	if(*s) return(-1);
17 	return(i);
18 }
19