| 1 | ## oils_failures_allowed: 0
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| 2 |
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| 3 | #### Float Literals with e-1
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| 4 |
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| 5 | shopt -s ysh:upgrade
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| 6 | # 1+2 2.3
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| 7 | var x = 1.2 + 23.0e-1 # 3.5
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| 8 | if (3.4 < x and x < 3.6) {
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| 9 | echo ok
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| 10 | }
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| 11 | ## STDOUT:
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| 12 | ok
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| 13 | ## END
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| 14 |
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| 15 | #### Float Literal with _
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| 16 |
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| 17 | shopt -s ysh:upgrade
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| 18 |
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| 19 | # 1+2 + 2.3
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| 20 | # add this _ here
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| 21 | var x = 1.2 + 2_3.0e-1 # 3.5
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| 22 | if (3.4 < x and x < 3.6) {
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| 23 | echo ok
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| 24 | }
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| 25 |
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| 26 | ## STDOUT:
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| 27 | ok
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| 28 | ## END
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| 29 |
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| 30 |
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| 31 | #### Period requires digit on either side, not 5. or .5
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| 32 | shopt --set parse_ysh_expr_sub
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| 33 |
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| 34 | echo $[0.5]
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| 35 | echo $[5.0]
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| 36 | echo $[5.]
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| 37 | echo $[.5]
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| 38 |
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| 39 | ## status: 2
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| 40 | ## STDOUT:
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| 41 | 0.5
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| 42 | 5.0
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| 43 | ## END
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| 44 |
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| 45 | #### Big float Literals with _
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| 46 | shopt --set parse_ysh_expr_sub
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| 47 |
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| 48 | # C++ issue: we currently print with snprintf %g
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| 49 | # Pars
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| 50 |
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| 51 | echo $[42_000.000_500]
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| 52 |
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| 53 | echo $[42_000.000_500e1]
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| 54 | echo $[42_000.000_500e-1]
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| 55 |
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| 56 | ## STDOUT:
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| 57 | 42000.0005
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| 58 | 420000.005
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| 59 | 4200.00005
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| 60 | ## END
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| 61 |
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| 62 | #### Big floats like 1e309 and -1e309 go to Inf / -Inf
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| 63 | shopt --set parse_ysh_expr_sub
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| 64 |
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| 65 | # Notes
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| 66 | # - Python float() and JS parseFloat() agree with this behavior
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| 67 | # - JSON doesn't have inf / -inf
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| 68 |
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| 69 | echo $[1e309]
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| 70 | echo $[-1e309]
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| 71 |
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| 72 | ## STDOUT:
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| 73 | inf
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| 74 | -inf
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| 75 | ## END
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| 76 |
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| 77 | #### Tiny floats go to zero
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| 78 |
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| 79 | shopt -s ysh:upgrade
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| 80 | # TODO: need equivalent of in YSh
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| 81 | # '0' * 309
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| 82 | # ['0'] * 309
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| 83 |
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| 84 | # 1e-324 == 0.0 in Python
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| 85 |
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| 86 | var zeros = []
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| 87 | for i in (1 ..< 324) {
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| 88 | call zeros->append('0')
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| 89 | }
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| 90 |
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| 91 | #= zeros
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| 92 |
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| 93 | var s = "0.$[join(zeros)]1"
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| 94 | #echo $s
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| 95 |
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| 96 | echo float=$[float(s)]
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| 97 |
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| 98 | ## STDOUT:
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| 99 | float=0.0
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| 100 | ## END
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| 101 |
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| 102 |
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| 103 | #### floatEquals() INFINITY NAN
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| 104 |
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| 105 | shopt --set ysh:upgrade
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| 106 | source $LIB_YSH/list.ysh
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| 107 |
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| 108 | # Create inf
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| 109 | var big = repeat('12345678', 100) ++ '.0'
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| 110 |
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| 111 | var inf = fromJson(big)
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| 112 | var neg_inf = fromJson('-' ++ big)
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| 113 |
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| 114 | if (floatsEqual(inf, INFINITY)) {
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| 115 | echo inf
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| 116 | }
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| 117 |
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| 118 | if (floatsEqual(neg_inf, -INFINITY)) {
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| 119 | echo neg_inf
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| 120 | }
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| 121 |
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| 122 | if (floatsEqual(NAN, INFINITY)) {
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| 123 | echo bad
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| 124 | }
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| 125 |
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| 126 | if (floatsEqual(NAN, NAN)) {
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| 127 | echo bad
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| 128 | }
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| 129 |
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| 130 | if (not floatsEqual(NAN, NAN)) {
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| 131 | echo 'nan is not nan'
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| 132 | }
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| 133 |
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| 134 | ## STDOUT:
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| 135 | inf
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| 136 | neg_inf
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| 137 | nan is not nan
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| 138 | ## END
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| 139 |
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| 140 | #### pretty print INFINITY, -INFINITY, NAN
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| 141 |
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| 142 | = [INFINITY, -INFINITY, NAN]
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| 143 | pp test_ ([INFINITY, -INFINITY, NAN])
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| 144 |
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| 145 | ## STDOUT:
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| 146 | (List) [INFINITY, -INFINITY, NAN]
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| 147 | (List) [INFINITY,-INFINITY,NAN]
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| 148 | ## END
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| 149 |
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| 150 | #### can't convert NAN, INFINITY to integer
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| 151 | shopt --set ysh:upgrade
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| 152 |
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| 153 | #echo $[int(NAN)]
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| 154 | try {
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| 155 | echo $[int(NAN)]
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| 156 | }
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| 157 | echo code $[_error.code]
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| 158 | #pp test_ (_error)
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| 159 |
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| 160 | #echo $[int(-INFINITY)]
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| 161 | try {
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| 162 | echo $[int(-INFINITY)]
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| 163 | }
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| 164 | echo code $[_error.code]
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| 165 | #pp test_ (_error)
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| 166 |
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| 167 | ## STDOUT:
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| 168 | code 3
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| 169 | code 3
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| 170 | ## END
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| 171 |
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| 172 | #### Regression: 1/3 gives 0.3+
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| 173 |
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| 174 | # We were using float precision, not double
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| 175 |
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| 176 | shopt --set ysh:upgrade
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| 177 |
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| 178 | pp test_ (1/3) | read --all
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| 179 | if (_reply ~ / '0.' '3'+ / ) {
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| 180 | echo one-third
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| 181 | }
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| 182 |
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| 183 | pp test_ (2/3) | read --all
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| 184 | #pp test_ (_reply)
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| 185 | if (_reply ~ / '0.' '6'+ / ) {
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| 186 | echo two-thirds
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| 187 | }
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| 188 |
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| 189 | ## STDOUT:
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| 190 | one-third
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| 191 | two-thirds
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| 192 | ## END
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| 193 |
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| 194 | #### Number of digits in 1/3
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| 195 | shopt --set ysh:upgrade
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| 196 |
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| 197 | # - Python 2 and bin/ysh: 14
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| 198 | # - Python 3: 18
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| 199 | # - YSH C++: 18
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| 200 |
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| 201 | var s = str(1/3)
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| 202 | #echo "ysh len $[len(s)]"
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| 203 | #echo ysh=$s
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| 204 |
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| 205 | # Don't bother to distinguish OSH Python vs C++ here
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| 206 | case (len(s)) {
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| 207 | (14) { echo pass }
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| 208 | (18) { echo pass }
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| 209 | (else) { echo FAIL }
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| 210 | }
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| 211 |
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| 212 | exit
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| 213 |
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| 214 | var py2 = $(python2 -c 'print(1.0/3)')
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| 215 | echo "py2 len $[len(py2)]"
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| 216 | echo py2=$py2
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| 217 |
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| 218 | var py3 = $(python3 -c 'print(1/3)')
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| 219 | echo "py3 len $[len(py3)]"
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| 220 | echo py3=$py3
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| 221 |
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| 222 | ## STDOUT:
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| 223 | pass
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| 224 | ## END
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