Method: Mgmg::Mat#submat_add!

Defined in:
lib/mgmg/utils.rb

#submat_add!(is, js, other) ⇒ Object 



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# File 'lib/mgmg/utils.rb', line 397

def submat_add!(is, js, other)
	i_s, i_e = index_treatment(is, row_size)
	j_s, j_e = index_treatment(js, col_size)
	i_s.upto(i_e).with_index do |i, io|
		row = @body[i]
		o_row = other.body[io]
		j_s.upto(j_e).with_index do |j, jo|
			row[j] += o_row[jo]
		end
	end
	self
end