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Annotation of 41BSD/cmd/pc0/ato.c, revision 1.1.1.1

1.1       root        1: /* Copyright (c) 1979 Regents of the University of California */
                      2: 
                      3: static char sccsid[] = "@(#)ato.c 1.1 8/27/80";
                      4: 
                      5: #include "whoami.h"
                      6: #include "0.h"
                      7: 
                      8: long
                      9: a8tol(cp)
                     10:        char *cp;
                     11: {
                     12:        int err;
                     13:        long l;
                     14:        register CHAR c;
                     15: 
                     16:        l = 0;
                     17:        err = 0;
                     18:        while ((c = *cp++) != '\0') {
                     19:                if (c == '8' || c == '9')
                     20:                        if (err == 0) {
                     21:                                error("8 or 9 in octal number");
                     22:                                err++;
                     23:                        }
                     24:                c -= '0';
                     25:                if ((l & 0160000000000L) != 0)
                     26:                        if (err == 0) {
                     27:                                error("Number too large for this implementation");
                     28:                                err++;
                     29:                        }
                     30:                l = (l << 3) | c;
                     31:        }
                     32:        return (l);
                     33: }
                     34: 
                     35: /*
                     36:  * Note that the version of atof
                     37:  * used in this compiler does not
                     38:  * (sadly) complain when floating
                     39:  * point numbers are too large.
                     40:  */

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