Class: NVector

Inherits:

NArray

• Object
• NArray
• NVector

Defined in:

lib/nmatrix.rb

Overview

—— NVector ——

Constant Summary

CLASS_DIMENSION =

1

Instance Method Summary

• #*(other) ⇒ Object
• #**(n) ⇒ Object
• #+(other) ⇒ Object
• #-(other) ⇒ Object
• #/(other) ⇒ Object
• #coerce_rev(other, id) ⇒ Object

Methods inherited from NArray

#==, #all?, #any?, #complex?, #integer?, #mean, #median, #none?, #randomn, #rank_total, #rms, #rmsdev, #stddev

Instance Method Details

#*(other) ⇒ Object

# File 'lib/nmatrix.rb', line 184

def *(other)
  case other
  when NMatrix
    NVector.mul_add( NArray.refer(self).newdim!(0), other, 1 )
  when NVector
    NArray.mul_add( NArray.refer(self), other, 0 ) # inner product
  when NArray
    if other.instance_of?(NArray)
	NVector.mul( NArray.refer(self), other.newdim(0) )
    else
	other.coerce_rev( self, :* )
    end
  when Numeric
    NVector.mul( NArray.refer(self), other )
  else
    raise TypeError,"Illegal operation: NVector * %s" % other.class
  end
end

#**(n) ⇒ Object

# File 'lib/nmatrix.rb', line 222

def **(n)
  if n==2
    self*self
  else
    raise ArgumentError,"Only v**2 is implemented"
  end
end

#+(other) ⇒ Object

Raises:

• (TypeError)

# File 'lib/nmatrix.rb', line 160

def +(other)
  case other
  when NVector
    return super(NArray.refer(other))
  when NArray
    unless other.instance_of?(NArray)
      return other.coerce_rev( self, :+ )
    end
  end
  raise TypeError,"Illegal operation: NVector + %s" % other.class
end

#-(other) ⇒ Object

Raises:

• (TypeError)

# File 'lib/nmatrix.rb', line 172

def -(other)
  case other
  when NVector
    return super(NArray.refer(other))
  when NArray
    unless other.instance_of?(NArray)
      return other.coerce_rev( self, :- )
    end
  end
  raise TypeError,"Illegal operation: NVector - %s" % other.class
end

#/(other) ⇒ Object

# File 'lib/nmatrix.rb', line 203

def /(other)
  case other
  when NMatrix
    other.lu.solve(self)
  when NVector
    raise TypeError,"Illegal operation: NVector / %s" % other.class
  when NArray
    if other.instance_of?(NArray)
	NVector.div( NArray.refer(self), other.newdim(0) )
    else
	other.coerce_rev( self, :/ )
    end
  when Numeric
    NVector.div( NArray.refer(self), other )
  else
    raise TypeError,"Illegal operation: NVector / %s" % other.class
  end
end

#coerce_rev(other, id) ⇒ Object

Raises:

• (TypeError)

# File 'lib/nmatrix.rb', line 230

def coerce_rev(other,id)
  case id
  when :*
	if other.instance_of?(NArray)
 return NVector.mul( other.newdim(0), self )
	end
	if other.instance_of?(NArrayScalar)
 return NVector.mul( other, self )
	end
  end
  raise TypeError,"Illegal operation: %s %s NVector" %
    [other.class, id.id2name]
end