diff options
| author | marcandre <marcandre@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2010-04-01 18:05:11 +0000 |
|---|---|---|
| committer | marcandre <marcandre@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2010-04-01 18:05:11 +0000 |
| commit | 729941da390cb317feb6772204d1630a21705c12 (patch) | |
| tree | 7298f5326a91b03d364c1ce93cb2bc42c446edcb /lib | |
| parent | 277cb36b21f8b5cb93e6b4373b23449bea917416 (diff) | |
* lib/matrix.rb: New Complex instance methods:
conjugate, conj, imaginary, imag, real, real?, rectangular, rect
[ruby-core:26285]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@27159 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/matrix.rb | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/lib/matrix.rb b/lib/matrix.rb index d131426f1a..18f53b7316 100644 --- a/lib/matrix.rb +++ b/lib/matrix.rb @@ -70,6 +70,7 @@ end # * <tt> #minor(*param) </tt> # # Properties of a matrix: +# * <tt> #real? </tt> # * <tt> #regular? </tt> # * <tt> #singular? </tt> # * <tt> #square? </tt> @@ -92,6 +93,15 @@ end # * <tt> #transpose </tt> # * <tt> #t </tt> # +# Complex arithmetic: +# * <tt> conj </tt> +# * <tt> conjugate </tt> +# * <tt> imag </tt> +# * <tt> imaginary </tt> +# * <tt> real </tt> +# * <tt> rect </tt> +# * <tt> rectangular </tt> +# # Conversion to other data types: # * <tt> #coerce(other) </tt> # * <tt> #row_vectors </tt> @@ -435,6 +445,13 @@ class Matrix end # + # Returns +true+ if all entries of the matrix are real. + # + def real? + all?(&:real?) + end + + # # Returns +true+ if this is a regular matrix. # def regular? @@ -898,6 +915,62 @@ class Matrix alias t transpose #-- + # COMPLEX ARITHMETIC -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= + #++ + + # + # Returns the conjugate of the matrix. + # Matrix[[Complex(1,2), Complex(0,1), 0], [1, 2, 3]] + # => 1+2i i 0 + # 1 2 3 + # Matrix[[Complex(1,2), Complex(0,1), 0], [1, 2, 3]].conjugate + # => 1-2i -i 0 + # 1 2 3 + # + def conjugate + collect(&:conjugate) + end + alias conj conjugate + + # + # Returns the imaginary part of the matrix. + # Matrix[[Complex(1,2), Complex(0,1), 0], [1, 2, 3]] + # => 1+2i i 0 + # 1 2 3 + # Matrix[[Complex(1,2), Complex(0,1), 0], [1, 2, 3]].imaginary + # => 2i i 0 + # 0 0 0 + # + def imaginary + collect(&:imaginary) + end + alias imag imaginary + + # + # Returns the real part of the matrix. + # Matrix[[Complex(1,2), Complex(0,1), 0], [1, 2, 3]] + # => 1+2i i 0 + # 1 2 3 + # Matrix[[Complex(1,2), Complex(0,1), 0], [1, 2, 3]].real + # => 1 0 0 + # 1 2 3 + # + def real + collect(&:real) + end + + # + # Returns an array containing matrices corresponding to the real and imaginary + # parts of the matrix + # + # m.rect == [m.real, m.imag] # ==> true for all matrices m + # + def rect + [real, imag] + end + alias rectangular rect + + #-- # CONVERTING -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- #++ |