Class: Matrix::Scalar

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

Overview

Private CLASS

Instance Method Summary collapse

Methods included from CoercionHelper

check_int, check_range, coerce_to, coerce_to_int, coerce_to_matrix

Constructor Details

#initialize(value) ⇒ Scalar

Returns a new instance of Scalar.


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# File 'lib/matrix.rb', line 1837

def initialize(value)
  @value = value
end

Instance Method Details

#*(other) ⇒ Object


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# File 'lib/matrix.rb', line 1864

def *(other)
  case other
  when Numeric
    Scalar.new(@value * other)
  when Vector, Matrix
    other.collect{|e| @value * e}
  else
    apply_through_coercion(other, __method__)
  end
end

#**(other) ⇒ Object


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# File 'lib/matrix.rb', line 1888

def **(other)
  case other
  when Numeric
    Scalar.new(@value ** other)
  when Vector
    raise ErrOperationNotDefined, ["**", @value.class, other.class]
  when Matrix
    #other.powered_by(self)
    raise ErrOperationNotImplemented, ["**", @value.class, other.class]
  else
    apply_through_coercion(other, __method__)
  end
end

#+(other) ⇒ Object

ARITHMETIC


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# File 'lib/matrix.rb', line 1842

def +(other)
  case other
  when Numeric
    Scalar.new(@value + other)
  when Vector, Matrix
    raise ErrOperationNotDefined, ["+", @value.class, other.class]
  else
    apply_through_coercion(other, __method__)
  end
end

#-(other) ⇒ Object


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# File 'lib/matrix.rb', line 1853

def -(other)
  case other
  when Numeric
    Scalar.new(@value - other)
  when Vector, Matrix
    raise ErrOperationNotDefined, ["-", @value.class, other.class]
  else
    apply_through_coercion(other, __method__)
  end
end

#/(other) ⇒ Object


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# File 'lib/matrix.rb', line 1875

def /(other)
  case other
  when Numeric
    Scalar.new(@value / other)
  when Vector
    raise ErrOperationNotDefined, ["/", @value.class, other.class]
  when Matrix
    self * other.inverse
  else
    apply_through_coercion(other, __method__)
  end
end