diff options
| -rw-r--r-- | lib/matrix.rb | 6 | ||||
| -rw-r--r-- | test/matrix/test_matrix.rb | 8 |
2 files changed, 11 insertions, 3 deletions
diff --git a/lib/matrix.rb b/lib/matrix.rb index a0f116095c..9d6650370d 100644 --- a/lib/matrix.rb +++ b/lib/matrix.rb @@ -983,11 +983,11 @@ class Matrix # def unitary? raise ErrDimensionMismatch unless square? - rows.each_with_index do |row, i| - column_count.times do |j| + rows.each_with_index do |row_i, i| + rows.each_with_index do |row_j, j| s = 0 row_count.times do |k| - s += row[k].conj * rows[k][j] + s += row_i[k].conj * row_j[k] end return false unless s == (i == j ? 1 : 0) end diff --git a/test/matrix/test_matrix.rb b/test/matrix/test_matrix.rb index 7dbb1000d9..9206678261 100644 --- a/test/matrix/test_matrix.rb +++ b/test/matrix/test_matrix.rb @@ -18,6 +18,7 @@ class TestMatrix < Test::Unit::TestCase @a3 = Matrix[[4, 1, -3], [0, 3, 7], [11, -4, 2]] @a5 = Matrix[[2, 0, 9, 3, 9], [8, 7, 0, 1, 9], [7, 5, 6, 6, 5], [0, 7, 8, 3, 0], [7, 8, 2, 3, 1]] @b3 = Matrix[[-7, 7, -10], [9, -3, -2], [-1, 3, 9]] + @rot = Matrix[[0, -1, 0], [1, 0, 0], [0, 0, -1]] end def test_matrix @@ -792,4 +793,11 @@ class TestMatrix < Test::Unit::TestCase assert_in_epsilon(vectors[0][0], vectors[0][1]) assert_in_epsilon(-4 * vectors[1][0], vectors[1][1]) end + + def test_unitary? + assert_equal true, @rot.unitary? + assert_equal true, ((0+1i) * @rot).unitary? + assert_equal false, @a3.unitary? + assert_raise(Matrix::ErrDimensionMismatch) { @m1.unitary? } + end end |