lib/matrix: Add explicit coercion #to_matrix

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@60857 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 18 insertions, 0 deletions

diff --git a/lib/matrix.rb b/lib/matrix.rb
index c6efa5d91a..8c22d2b208 100644
--- a/lib/matrix.rb
+++ b/lib/matrix.rb
@@ -1381,6 +1381,13 @@ class Matrix
   end
 
   #
+  # Explicit conversion to a Matrix. Returns self
+  #
+  def to_matrix
+    self
+  end
+
+  #
   # Returns an array of arrays that describe the rows of the matrix.
   #
   def to_a
@@ -1494,6 +1501,10 @@ class Matrix
     def self.coerce_to_int(obj)
       coerce_to(obj, Integer, :to_int)
     end
+
+    def self.coerce_to_matrix(obj)
+      coerce_to(obj, Matrix, :to_matrix)
+    end
   end
 
   include CoercionHelper
@@ -2039,6 +2050,13 @@ class Vector
     @elements.dup
   end
 
+  #
+  # Return a single-column matrix from this vector
+  #
+  def to_matrix
+    Matrix.column_vector(self)
+  end
+
   def elements_to_f
     warn "#{caller(1, 1)[0]}: warning: Vector#elements_to_f is deprecated"
     map(&:to_f)