diff options
| -rw-r--r-- | lib/matrix.rb | 7 | ||||
| -rw-r--r-- | test/matrix/test_matrix.rb | 5 |
2 files changed, 12 insertions, 0 deletions
diff --git a/lib/matrix.rb b/lib/matrix.rb index b8139b547f..6b3a2becf4 100644 --- a/lib/matrix.rb +++ b/lib/matrix.rb @@ -1225,6 +1225,13 @@ class Matrix collect {|e| -e } end + # + # Returns the absolute value elementwise + # + def abs + collect(&:abs) + end + #-- # MATRIX FUNCTIONS -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- #++ diff --git a/test/matrix/test_matrix.rb b/test/matrix/test_matrix.rb index 3ecb9d2f8b..7dbb1000d9 100644 --- a/test/matrix/test_matrix.rb +++ b/test/matrix/test_matrix.rb @@ -583,6 +583,11 @@ class TestMatrix < Test::Unit::TestCase assert_equal(1, s1 ** o) end + def test_abs + s1 = @a3.abs + assert_equal(s1, Matrix[[4, 1, 3], [0, 3, 7], [11, 4, 2]]) + end + def test_hstack assert_equal Matrix[[1,2,3,2,3,4,1,2,3], [4,5,6,5,6,7,4,5,6]], @m1.hstack(@n1, @m1) |