func (m *matrixImpl) Subtract(n types.Matrix) types.Matrix {
validates.ShapeShouldBeSame(m, n)
cursor := n.NonZeros()
for cursor.HasNext() {
element, row, column := cursor.Get()
m.Update(row, column, m.Get(row, column)-element)
}
return m
}
func (m *matrixImpl) Equal(n types.Matrix) bool {
validates.ShapeShouldBeSame(m, n)
cursor := n.All()
for cursor.HasNext() {
element, row, column := cursor.Get()
if m.Get(row, column) != element {
return false
}
}
return true
}