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 



8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
 
# 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( ( args[0].value / args[1].value ) * 100.0, 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