Module: RplLang::Words::OperationsReals

Includes:
Types
Included in:
Rpl
Defined in:
lib/rpl/words/operations-reals.rb

Instance Method Summary collapse

Methods included from Types

new_object

Instance Method Details

#populate_dictionary ⇒ Object 



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# File 'lib/rpl/words/operations-reals.rb', line 8

def populate_dictionary
  super

  category = 'Operations on reals'
  # Operations on reals
  @dictionary.add_word( ['%'],
                        category,
                        '( a b -- c ) b% of a',
                        proc do
                          args = stack_extract( [[RplNumeric], [RplNumeric]] )

                          @stack << RplNumeric.new( args[0].value * ( args[1].value / 100.0 ), args[1].base )
                        end )

  @dictionary.add_word( ['%CH'],
                        category,
                        '( a b -- c ) b is c% of a',
                        proc do
                          args = stack_extract( [[RplNumeric], [RplNumeric]] )

                          @stack << RplNumeric.new( 100.0 * ( args[0].value / args[1].value ), args[1].base )
                        end )

  @dictionary.add_word( ['mod'],
                        category,
                        '( a b -- c ) modulo',
                        proc do
                          args = stack_extract( [[RplNumeric], [RplNumeric]] )

                          @stack << RplNumeric.new( args[1].value % args[0].value, args[1].base )
                        end )

  @dictionary.add_word( ['!', 'fact'],
                        category,
                        '( a -- b ) factorial',
                        proc do
                          args = stack_extract( [[RplNumeric]] )

                          @stack << RplNumeric.new( Math.gamma( args[0].value ), args[0].base )
                        end )

  @dictionary.add_word( ['floor'],
                        category,
                        '( a -- b ) highest integer under a',
                        proc do
                          args = stack_extract( [[RplNumeric]] )

                          @stack << RplNumeric.new( args[0].value.floor, args[0].base )
                        end )

  @dictionary.add_word( ['ceil'],
                        category,
                        '( a -- b ) highest integer over a',
                        proc do
                          args = stack_extract( [[RplNumeric]] )

                          @stack << RplNumeric.new( args[0].value.ceil, args[0].base )
                        end )

  @dictionary.add_word( ['min'],
                        category,
                        '( a b -- a/b ) leave lowest of a or b',
                        proc do
                          args = stack_extract( [[RplNumeric], [RplNumeric]] )

                          @stack << ( args[0].value < args[1].value ? args[0] : args[1] )
                        end )

  @dictionary.add_word( ['max'],
                        category,
                        '( a b -- a/b ) leave highest of a or b',
                        proc do
                          args = stack_extract( [[RplNumeric], [RplNumeric]] )

                          @stack << ( args[0].value > args[1].value ? args[0] : args[1] )
                        end )

  @dictionary.add_word( ['mant'],
                        category,
                        'mantissa of a real number',
                        proc do
                          args = stack_extract( [[RplNumeric]] )

                          @stack << Types.new_object( RplNumeric, args[0].value.to_s.split('e').first.to_f.abs )
                        end )

  @dictionary.add_word( ['xpon'],
                        category,
                        'exponant of a real number',
                        proc do
                          args = stack_extract( [[RplNumeric]] )

                          @stack << RplNumeric.new( args[0].value.exponent, args[0].base )
                        end )

  @dictionary.add_word( ['ip'],
                        category,
                        '( n -- i ) integer part',
                        proc do
                          run( 'dup fp -' )
                        end )

  @dictionary.add_word( ['fp'],
                        category,
                        '( n -- f ) fractional part',
                        proc do
                          args = stack_extract( [[RplNumeric]] )

                          @stack << RplNumeric.new( args[0].value.frac, args[0].base )
                        end )
end