nl_tokens: Compute the product of an upper triangular matrix with a vector
pl_tokens: function trmv ( A , x , isLower ) { var dot = blas1 . dot ; var n = A . shape [ 1 ] ; var i = 0 ; if ( isLower ) { for ( i = n - 1 ; i >= 0 ; i -- ) { x . set ( i , dot ( A . pick ( i , null ) . hi ( i + 1 ) , x . hi ( i + 1 ) ) ) ; } } else { for ( i = 0 ; i < n ; i ++ ) { x . <mask> ( i , dot ( A . pick ( i , null ) . lo ( i ) , x . lo ( i ) ) ) ; } } return true ; }