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Commit | Line | Data |
---|---|---|
d166f048 | 1 | set +o posix |
ccc6cda3 JA |
2 | declare -i iv jv |
3 | ||
4 | iv=$(( 3 + 5 * 32 )) | |
5 | echo $iv | |
6 | iv=iv+3 | |
7 | echo $iv | |
8 | iv=2 | |
9 | jv=iv | |
10 | ||
11 | let "jv *= 2" | |
12 | echo $jv | |
13 | jv=$(( $jv << 2 )) | |
14 | echo $jv | |
15 | ||
16 | let jv="$jv / 2" | |
17 | echo $jv | |
18 | jv="jv >> 2" | |
19 | echo $jv | |
20 | ||
21 | iv=$((iv+ $jv)) | |
22 | echo $iv | |
23 | echo $((iv -= jv)) | |
24 | echo $iv | |
25 | echo $(( iv == jv )) | |
26 | echo $(( iv != $jv )) | |
27 | echo $(( iv < jv )) | |
28 | echo $(( $iv > $jv )) | |
29 | echo $(( iv <= $jv )) | |
30 | echo $(( $iv >= jv )) | |
31 | ||
32 | echo $jv | |
33 | echo $(( ~$jv )) | |
34 | echo $(( ~1 )) | |
35 | echo $(( ! 0 )) | |
36 | ||
37 | echo $(( jv % 2 )) | |
38 | echo $(( $iv % 4 )) | |
39 | ||
40 | echo $(( iv <<= 16 )) | |
41 | echo $(( iv %= 33 )) | |
42 | ||
43 | echo $(( 33 & 55 )) | |
44 | echo $(( 33 | 17 )) | |
45 | ||
46 | echo $(( iv && $jv )) | |
47 | echo $(( $iv || jv )) | |
48 | ||
49 | echo $(( iv && 0 )) | |
50 | echo $(( iv & 0 )) | |
51 | echo $(( iv && 1 )) | |
52 | echo $(( iv & 1 )) | |
53 | ||
54 | echo $(( $jv || 0 )) | |
55 | echo $(( jv | 0 )) | |
56 | echo $(( jv | 1 )) | |
57 | echo $(( $jv || 1 )) | |
58 | ||
59 | let 'iv *= jv' | |
60 | echo $iv | |
61 | echo $jv | |
62 | let "jv += $iv" | |
63 | echo $jv | |
64 | ||
65 | echo $(( jv /= iv )) | |
66 | echo $(( jv <<= 8 )) | |
67 | echo $(( jv >>= 4 )) | |
68 | ||
69 | echo $(( iv |= 4 )) | |
70 | echo $(( iv &= 4 )) | |
71 | ||
72 | echo $(( iv += (jv + 9))) | |
73 | echo $(( (iv + 4) % 7 )) | |
74 | ||
75 | # unary plus, minus | |
76 | echo $(( +4 - 8 )) | |
77 | echo $(( -4 + 8 )) | |
78 | ||
79 | # conditional expressions | |
80 | echo $(( 4<5 ? 1 : 32)) | |
81 | echo $(( 4>5 ? 1 : 32)) | |
82 | echo $(( 4>(2+3) ? 1 : 32)) | |
83 | echo $(( 4<(2+3) ? 1 : 32)) | |
84 | echo $(( (2+2)<(2+3) ? 1 : 32)) | |
85 | echo $(( (2+2)>(2+3) ? 1 : 32)) | |
86 | ||
87 | # check that the unevaluated part of the ternary operator does not do | |
88 | # evaluation or assignment | |
89 | x=i+=2 | |
90 | y=j+=2 | |
91 | declare -i i=1 j=1 | |
92 | echo $((1 ? 20 : (x+=2))) | |
93 | echo $i,$x | |
94 | echo $((0 ? (y+=2) : 30)) | |
95 | echo $j,$y | |
96 | ||
97 | x=i+=2 | |
98 | y=j+=2 | |
99 | declare -i i=1 j=1 | |
100 | echo $((1 ? 20 : (x+=2))) | |
101 | echo $i,$x | |
102 | echo $((0 ? (y+=2) : 30)) | |
103 | echo $i,$y | |
104 | ||
105 | # check precedence of assignment vs. conditional operator | |
106 | # should be an error | |
107 | declare -i x=2 | |
108 | y=$((1 ? 20 : x+=2)) | |
109 | ||
110 | # check precedence of assignment vs. conditional operator | |
111 | declare -i x=2 | |
112 | echo $((0 ? x+=2 : 20)) | |
113 | ||
114 | # associativity of assignment-operator operator | |
115 | declare -i i=1 j=2 k=3 | |
116 | echo $((i += j += k)) | |
117 | echo $i,$j,$k | |
118 | ||
119 | # octal, hex | |
120 | echo $(( 0x100 | 007 )) | |
121 | echo $(( 0xff )) | |
122 | echo $(( 16#ff )) | |
123 | echo $(( 16#FF/2 )) | |
124 | echo $(( 8#44 )) | |
125 | ||
126 | echo $(( 8 ^ 32 )) | |
127 | ||
128 | # other bases | |
129 | echo $(( 16#a )) | |
130 | echo $(( 32#a )) | |
131 | echo $(( 56#a )) | |
132 | echo $(( 64#a )) | |
133 | ||
134 | echo $(( 16#A )) | |
135 | echo $(( 32#A )) | |
136 | echo $(( 56#A )) | |
137 | echo $(( 64#A )) | |
138 | ||
139 | echo $(( 64#_ )) | |
140 | echo $(( 64#@ )) | |
141 | ||
142 | # weird bases | |
143 | echo $(( 3425#56 )) | |
144 | ||
145 | # missing number after base | |
146 | echo $(( 2# )) | |
147 | ||
148 | # these should generate errors | |
149 | echo $(( 7 = 43 )) | |
150 | echo $(( 2#44 )) | |
151 | echo $(( 44 / 0 )) | |
152 | let 'jv += $iv' | |
153 | echo $(( jv += \$iv )) | |
154 | let 'rv = 7 + (43 * 6' | |
155 | ||
156 | # more errors | |
157 | declare -i i | |
158 | i=0#4 | |
159 | i=2#110#11 | |
d166f048 JA |
160 | |
161 | ((echo abc; echo def;); echo ghi) | |
162 | ||
163 | if (((4+4) + (4 + 7))); then | |
164 | echo ok | |
165 | fi | |
166 | ||
167 | (()) # make sure the null expression works OK | |
168 | ||
169 | a=(0 2 4 6) | |
170 | echo $(( a[1] + a[2] )) | |
171 | echo $(( (a[1] + a[2]) == a[3] )) | |
172 | (( (a[1] + a[2]) == a[3] )) ; echo $? | |
173 | ||
174 | # test pushing and popping the expression stack | |
175 | unset A | |
176 | A="4 + " | |
177 | echo $(( ( 4 + A ) + 4 )) | |
178 | A="3 + 5" | |
179 | echo $(( ( 4 + A ) + 4 )) | |
180 | ||
181 | # badly-formed conditional expressions | |
182 | echo $(( 4 ? : $A )) | |
183 | echo $(( 1 ? 20 )) | |
184 | echo $(( 4 ? 20 : )) | |
185 | ||
186 | # precedence and short-circuit evaluation | |
187 | B=9 | |
188 | echo $B | |
189 | ||
190 | echo $(( 0 && B=42 )) | |
191 | echo $B | |
192 | ||
193 | echo $(( 1 || B=88 )) | |
194 | echo $B | |
195 | ||
196 | echo $(( 0 && (B=42) )) | |
197 | echo $B | |
198 | ||
199 | echo $(( (${$} - $$) && (B=42) )) | |
200 | echo $B | |
201 | ||
202 | echo $(( 1 || (B=88) )) | |
203 | echo $B | |
204 | ||
205 | # until command with (( )) command | |
206 | x=7 | |
207 | ||
208 | echo $x | |
209 | until (( x == 4 )) | |
210 | do | |
211 | echo $x | |
212 | x=4 | |
213 | done | |
214 | ||
215 | echo $x | |
cce855bc JA |
216 | |
217 | # exponentiation | |
218 | echo $(( 2**15 - 1)) | |
219 | echo $(( 2**(16-1))) | |
220 | echo $(( 2**16*2 )) | |
221 | echo $(( 2**31-1)) | |
222 | echo $(( 2**0 )) |