Class: Matrix::Scalar

Inherits:
Numeric
  • Object
show all
Includes:
ExceptionForMatrix
Defined in:
lib/matrix.rb

Overview

Private CLASS

Instance Method Summary collapse

Constructor Details

#initialize(value) ⇒ Scalar

Returns a new instance of Scalar.



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# File 'lib/matrix.rb', line 873

def initialize(value)
  @value = value
end

Instance Method Details

#*(other) ⇒ Object 



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# File 'lib/matrix.rb', line 906

def *(other)
  case other
  when Numeric
    Scalar.new(@value * other)
  when Vector, Matrix
    other.collect{|e| @value * e}
  else
    x, y = other.coerce(self)
    x * y
  end
end

#**(other) ⇒ Object 



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# File 'lib/matrix.rb', line 932

def ** (other)
  case other
  when Numeric
    Scalar.new(@value ** other)
  when Vector
    Scalar.Raise WrongArgType, other.class, "Numeric or Scalar or Matrix"
  when Matrix
    other.powered_by(self)
  else
    x, y = other.coerce(self)
    x ** y
  end
end

#+(other) ⇒ Object

ARITHMETIC



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# File 'lib/matrix.rb', line 878

def +(other)
  case other
  when Numeric
    Scalar.new(@value + other)
  when Vector, Matrix
    Scalar.Raise WrongArgType, other.class, "Numeric or Scalar"
  when Scalar
    Scalar.new(@value + other.value)
  else
    x, y = other.coerce(self)
    x + y
  end
end

#-(other) ⇒ Object 



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# File 'lib/matrix.rb', line 892

def -(other)
  case other
  when Numeric
    Scalar.new(@value - other)
  when Vector, Matrix
    Scalar.Raise WrongArgType, other.class, "Numeric or Scalar"
  when Scalar
    Scalar.new(@value - other.value)
  else
    x, y = other.coerce(self)
    x - y
  end
end

#/(other) ⇒ Object 



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# File 'lib/matrix.rb', line 918

def / (other)
  case other
  when Numeric
    Scalar.new(@value / other)
  when Vector
    Scalar.Raise WrongArgType, other.class, "Numeric or Scalar or Matrix"
  when Matrix
    self * _M.inverse
  else
    x, y = other.coerce(self)
    x / y
  end
end