_64e64            823 ext/sqlite/libsqlite/src/util.c     while( r < 0.5/_64e64 && exp > -961  ){ r *= _64e64;  exp -= 64; }
_64e64            828 ext/sqlite/libsqlite/src/util.c     while( r >= 0.5*_64e63 && exp < 960  ){ r *= 1.0/_64e64; exp += 64; }