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