The parameter "lwork" of the function pdsyevr can be determined by some formula.
I don't understand some of the formula:
why the subscript is decreased by 1,e.g., mb_ -1?
what is csrc_nb_? I can not find it in the manual.
nb = desca[ mb_ - 1] = desca( nb_ ) = descz[ mb_ - 1] = descz( nb_ )
desca[ rsrc_ - 1] = desca[ csrc_nb_ - 1] = descz[rsrc_ - 1] = descz[csrc_ - 1] = 0