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* lib/matrix.rb: New Complex instance methods:

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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
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marcandre 2010-04-01 18:05:11 +00:00
parent 277cb36b21
commit 729941da39
2 changed files with 86 additions and 0 deletions
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13
ChangeLog
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@ -1,3 +1,16 @@
Fri Apr 2 02:56:56 2010 Marc-Andre Lafortune <ruby-core@marc-andre.ca>
* lib/matrix.rb: : New instance methods:
empty? [ruby-core:26284], each, each_with_index [ruby-core:28400],
conjugate, conj, imaginary, imag, real, real?, rectangular, rect
[ruby-core:26285]
Removed compare_by*, inspect_org, cf [ruby-core:26268]
Matrix.empty: raise on negative sizes
Matrix.determinant: raise on rectangular matrices [ruby-core:28271]
Thu Apr 1 17:17:00 2010 NARUSE, Yui <naruse@ruby-lang.org>
* enc/trans/iso2022.trans: CP50221 supports 8bit JIS.

73
lib/matrix.rb
View file

@ -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>
@ -434,6 +444,13 @@ class Matrix
column_size == 0 || row_size == 0
end
#
# Returns +true+ if all entries of the matrix are real.
#
def real?
all?(&:real?)
end
#
# Returns +true+ if this is a regular matrix.
#
@ -897,6 +914,62 @@ class Matrix
end
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 -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#++