* lib/matrix.rb: Add aliases for Vector#cross & dot

patch by gogo tanaka [#10352]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48181 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Wed Oct 29 11:42:33 2014  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
+
+	* lib/matrix.rb: Add aliases for Vector#cross & dot
+	  patch by gogo tanaka [#10352]
+
 Wed Oct 29 10:00:18 2014  SHIBATA Hiroshi  <shibata.hiroshi@gmail.com>
 
 	* gems/bundled_gems: Update latest version of bundled gems.

NEWS

@@ -154,6 +154,7 @@ with all sufficient information, see the ChangeLog file.
       along the +num+ -th row or column.
     * Vector.basis(size:, index:) returns the specified basis vector
     * Unary - and + added for Vector and Matrix
+    * Vector#dot and #cross are aliases for #inner_product and #cross_product
 
 * Pathname
   * Pathname#/ is aliased to Pathname#+.

lib/matrix.rb

@@ -1684,8 +1684,8 @@ end
 # * #-@
 #
 # Vector functions:
-# * #inner_product(v)
-# * #cross_product(v)
+# * #inner_product(v), dot(v)
+# * #cross_product(v), cross(v)
 # * #collect
 # * #magnitude
 # * #map
@@ -1944,6 +1944,7 @@ class Vector
     }
     p
   end
+  alias_method :dot, :inner_product
 
   #
   # Returns the cross product of this vector with the other.
@@ -1955,6 +1956,7 @@ class Vector
             v[0]*@elements[2] - v[2]*@elements[0],
             v[1]*@elements[0] - v[0]*@elements[1] ]
   end
+  alias_method :cross, :cross_product
 
   #
   # Like Array#collect.

test/matrix/test_vector.rb

@@ -131,6 +131,7 @@ class TestVector < Test::Unit::TestCase
 
   def test_inner_product
     assert_equal(1+4+9, @v1.inner_product(@v1))
+    assert_equal(1+4+9, @v1.dot(@v1))
   end
 
   def test_r
@@ -168,5 +169,7 @@ class TestVector < Test::Unit::TestCase
   def test_cross_product
     v = Vector[1, 0, 0].cross_product Vector[0, 1, 0]
     assert_equal(Vector[0, 0, 1], v)
+    v = Vector[1, 0, 0].cross Vector[0, 1, 0]
+    assert_equal(Vector[0, 0, 1], v)
   end
 end