+ const unsigned char *p;
+ __tzname[0] = __tzname[1] = 0;
+ __daylight = __timezone = dst_off = 0;
+ for (p=types; p<abbrevs; p+=6) {
+ if (!p[4] && !__tzname[0]) {
+ __tzname[0] = (char *)abbrevs + p[5];
+ __timezone = -zi_read32(p);
+ }
+ if (p[4] && !__tzname[1]) {
+ __tzname[1] = (char *)abbrevs + p[5];
+ dst_off = -zi_read32(p);
+ __daylight = 1;
+ }
+ }
+ if (!__tzname[0]) __tzname[0] = __tzname[1];
+ if (!__tzname[0]) __tzname[0] = (char *)__utc;
+ if (!__daylight) {
+ __tzname[1] = __tzname[0];
+ dst_off = __timezone;
+ }
+ return;