zgrownorm.m

similer program for matlab

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## -*- texinfo -*-
## @deftypefn {Function File} {[@var{nonz}, @var{zer}] =} zgrownorm (@var{mat}, @var{meps})
## Return @var{nonz} = number of rows of @var{mat} whose two norm
## exceeds @var{meps}, and @var{zer} = number of rows of mat whose two
## norm is less than @var{meps}.
## @end deftypefn

function [sig, tau] = zgrownorm (mat, meps)

  if (nargin != 2)
    print_usage ();
  endif

  rownorm = [];
  for ii = 1:rows (mat)
    rownorm(ii) = norm (mat(ii,:));
  endfor
  sig = sum (rownorm > meps);
  tau = sum (rownorm <= meps);

endfunction