Logical operations: Difference between revisions
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(→{{header|Commodore BASIC}}: Add XOR from BASIC 7.) |
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==={{header|Commodore BASIC}}=== |
==={{header|Commodore BASIC}}=== |
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In Commodore BASIC the "logical" operators are actually bitwise operators; to enable the proper semantics when they're used for logic, true expressions return -1 (all bits set) and false expressions return 0 (all bits clear). |
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In Commodore BASIC 'True' is -1 and 'False' is 0. There is no operation for 'exclusive-or'. |
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<lang qbasic>10 A = -1 |
<lang qbasic>10 A = -1 |
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20 B = 0 |
20 B = 0 |
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-1 |
-1 |
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0</pre> |
0</pre> |
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{{works with|Commodore BASIC 7.0}} |
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Commodore BASIC version 7 for the C-128 added XOR, but it's a function, and for some reason was written to accept only unsigned (16-bit) numbers. |
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<lang basic>70 PRINT XOR(1, 0)</lang> |
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{{out}} |
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<pre>1</pre> |
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==={{header|BASIC256}}=== |
==={{header|BASIC256}}=== |
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