| 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
|