Hi 2016-05-25 4:52 GMT+02:00 Kouhei Kaigai <kai...@ak.jp.nec.com>:

> In a few days, I'm working for a data type that represents matrix in > mathematical area. Does people favor to have this data type in the core, > not only my extension? > > Like oidvector or int2vector, it is one of array type with a few > restrictions: > - 2 dimensional only > - never contains NULL > - element type is real or float > - no lower bounds of array > > A vector in mathematic is a special case of matrix; either 1xN or Nx1. > > We can define various operators between matrix/scalar, like: > matrix + matrix -> matrix > matrix - scalar -> matrix > matrix * matrix -> matrix > transform(matrix) -> matrix > : > > How about people's thought? > It is far to data processing - so it should be placed in PGXN. Regards Pavel > > If overall consensus is welcome to have, I'll set up a patch. > Thanks, > -- > NEC Business Creation Division / PG-Strom Project > KaiGai Kohei <kai...@ak.jp.nec.com> > > > > -- > Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) > To make changes to your subscription: > http://www.postgresql.org/mailpref/pgsql-hackers >