sgn              15461 ext/sqlite3/libsqlite/sqlite3.c   int sgn = 0;
sgn              15468 ext/sqlite3/libsqlite/sqlite3.c     sgn = -1;
sgn              15470 ext/sqlite3/libsqlite/sqlite3.c     sgn = +1;
sgn              15482 ext/sqlite3/libsqlite/sqlite3.c   p->tz = sgn*(nMn + nHr*60);