/* $NetBSD: octtoint.c,v 1.1.1.1 2000/03/29 12:38:50 simonb Exp $ */ /* * octtoint - convert an ascii string in octal to an unsigned * long, with error checking */ #include #include #include "ntp_stdlib.h" int octtoint( const char *str, u_long *ival ) { register u_long u; register const char *cp; cp = str; if (*cp == '\0') return 0; u = 0; while (*cp != '\0') { if (!isdigit((int)*cp) || *cp == '8' || *cp == '9') return 0; if (u >= 0x20000000) return 0; /* overflow */ u <<= 3; u += *cp++ - '0'; /* ascii dependent */ } *ival = u; return 1; }