1	# spec/oil-expr-arith
2
3	#### Addition, with conversion from string
4
5	var i = 1 + 2
6
7	var j = ' 2.5 ' + ' 3'
8
9	var k = ' 5.0 ' - ' 2.5 '
10
11	var n = ' 2 ' * 3 * ' 4 '
12
13	write -- $i $j $k $n
14
15	## STDOUT:
16	3
17	5.5
18	2.5
19	24
20	## END
21
22
23	#### Floating Point Division with /
24
25	var i = '1.0' / '0.05'
26
27	echo $i
28
29	## STDOUT:
30	20.0
31	## END
32
33
34	#### Operations That Convert to Integer: // % **
35
36	var m = ' 5 ' // 2
37
38	var n = ' 5 ' % 2
39
40	var p = ' 5 ' ** 2
41
42	write -- $m $n $p
43
44	## STDOUT:
45	2
46	1
47	25
48	## END
49
50	#### Unary Operations
51
52	var a = ~1
53
54	var b = -1
55	var c = -2.3
56
57	var d = not true
58
59
60	write -- $a $b $c $d
61
62	## STDOUT:
63	-2
64	-1
65	-2.3
66	false
67	## END
68
69	#### unary ~ applied to bool is not allowed
70	= ~false
71	## status: 3
72	## STDOUT:
73	## END
74
75	#### unary ~ applied to float is not allowed
76	= ~1.
77	## status: 3
78	## STDOUT:
79	## END
80
81	#### unary - applied to bool is not allowed
82	= ~false
83	## status: 3
84	## STDOUT:
85	## END
86
87	#### unary 'not' applied to int is not allowed
88	= not 1
89	## status: 3
90	## STDOUT:
91	## END
92
93	#### unary 'not' applied to float is not allowed
94	= not 1.
95	## status: 3
96	## STDOUT:
97	## END