164 tm_to_time( struct tm* tmP )  in tm_to_time()  argument
171     t = ( tmP->tm_year - 70 ) * 365;  in tm_to_time()
173     t += ( tmP->tm_year - 1 - 68 ) / 4; /* -1: don't count this year */  in tm_to_time()
176     if (tmP->tm_year > 200)  in tm_to_time()
177       t -= (tmP->tm_year - 1 - 100) / 100;  in tm_to_time()
178     if (tmP->tm_year > 500)  in tm_to_time()
179       t += (tmP->tm_year - 1 - 100) / 400;  in tm_to_time()
182     t += monthtab[tmP->tm_mon];  in tm_to_time()
184     if ( tmP->tm_mon >= 2 && is_leap( tmP->tm_year ) )  in tm_to_time()
187     t += tmP->tm_mday - 1;	/* 1-based field */  in tm_to_time()
189     t = t * 24 + tmP->tm_hour;  in tm_to_time()
190     t = t * 60 + tmP->tm_min;  in tm_to_time()
191     t = t * 60 + tmP->tm_sec;  in tm_to_time()