1 ## oils_failures_allowed: 1
2
3 #### Pound char literal (is an integer TODO: could be ord())
4 const a = #'a'
5 const A = #'A'
6 echo "$a $A"
7 ## STDOUT:
8 97 65
9 ## END
10
11 #### The literal #''' isn't accepted (use \' instead)
12
13 # This looks too much like triple quoted strings!
14
15 echo nope
16 const bad = #'''
17 echo "$bad"
18
19 ## status: 2
20 ## STDOUT:
21 nope
22 ## END
23
24 #### Float Literals with e-1
25
26 shopt -s ysh:upgrade
27 # 1+2 2.3
28 var x = 1.2 + 23.0e-1 # 3.5
29 if (3.4 < x and x < 3.6) {
30 echo ok
31 }
32 ## STDOUT:
33 ok
34 ## END
35
36 #### Float Literal with _
37
38 shopt -s ysh:upgrade
39
40 # 1+2 + 2.3
41 # add this _ here
42 var x = 1.2 + 2_3.0e-1 # 3.5
43 if (3.4 < x and x < 3.6) {
44 echo ok
45 }
46
47 ## STDOUT:
48 ok
49 ## END
50
51
52 #### Period requires digit on either side, not 5. or .5
53 echo $[0.5]
54 echo $[5.0]
55 echo $[5.]
56 echo $[.5]
57
58 ## status: 2
59 ## STDOUT:
60 0.5
61 5.0
62 ## END
63
64 #### Big float Literals with _
65
66 # C++ issue: we currently print with snprintf %g
67 # Pars
68
69 echo $[42_000.000_500]
70
71 echo $[42_000.000_500e1]
72 echo $[42_000.000_500e-1]
73
74 ## STDOUT:
75 42000.0005
76 420000.005
77 4200.00005
78 ## END
79
80 #### Big floats like 1e309 and -1e309 go to Inf / -Inf
81
82 # Notes
83 # - Python float() and JS parseFloat() agree with this behavior
84 # - JSON doesn't have inf / -inf
85
86 echo $[1e309]
87 echo $[-1e309]
88
89 ## STDOUT:
90 inf
91 -inf
92 ## END
93
94 #### Tiny floats go to zero
95
96 shopt -s ysh:upgrade
97 # TODO: need equivalent of in YSh
98 # '0' * 309
99 # ['0'] * 309
100
101 # 1e-324 == 0.0 in Python
102
103 var zeros = []
104 for i in (1 .. 324) {
105 call zeros->append('0')
106 }
107
108 #= zeros
109
110 var s = "0.$[join(zeros)]1"
111 #echo $s
112
113 echo float=$[float(s)]
114
115 ## STDOUT:
116 float=0.0
117 ## END
118
119
120 #### INFINITY NAN floatEquals()
121
122 echo TODO
123
124 ## STDOUT:
125 ## END
126
127 #### Regression: 1/3 gives 0.3+
128
129 # We were using float precision, not double
130
131 shopt --set ysh:upgrade
132
133 pp line (1/3) | read --all
134 if (_reply ~ / '0.' '3'+ / ) {
135 echo one-third
136 }
137
138 pp line (2/3) | read --all
139 if (_reply ~ / '0.' '6'+ '7' / ) {
140 echo two-thirds
141 }
142
143 ## STDOUT:
144 one-third
145 two-thirds
146 ## END