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23 lines
2.6 KiB
Plaintext
23 lines
2.6 KiB
Plaintext
{{QBDLDATE:08-02-2022}}
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{{QBDLTIME:22:58:34}}
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{{FixedStart}}
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The results of the bitwise logical operations, where '''A''' and '''B''' are operands,
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and '''1''' or '''0''' indicate whether a bit is set or not set:
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┌───────────┬────────────────────────────────────────────────────────┐
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│ '''Operands''' │ '''Logical operations''' │
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├─────┬─────┼───────┬─────────┬────────┬─────────┬─────────┬─────────┤
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│ '''A''' │ '''B''' │ [[NOT]] '''B''' │ '''A''' [[AND]] '''B''' │ '''A''' [[OR]] '''B''' │ '''A''' [[XOR]] '''B''' │ '''A''' [[EQV]] '''B''' │ '''A''' [[IMP]] '''B''' │
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├─────┼─────┼───────┼─────────┼────────┼─────────┼─────────┼─────────┤
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│ '''1''' │ '''1''' │ 0 │ 1 │ 1 │ 0 │ 1 │ 1 │
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├─────┼─────┼───────┼─────────┼────────┼─────────┼─────────┼─────────┤
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│ '''1''' │ '''0''' │ 1 │ 0 │ 1 │ 1 │ 0 │ 0 │
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├─────┼─────┼───────┼─────────┼────────┼─────────┼─────────┼─────────┤
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│ '''0''' │ '''1''' │ 0 │ 0 │ 1 │ 1 │ 0 │ 1 │
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├─────┼─────┼───────┼─────────┼────────┼─────────┼─────────┼─────────┤
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│ '''0''' │ '''0''' │ 1 │ 0 │ 0 │ 0 │ 1 │ 1 │
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└─────┴─────┴───────┴─────────┴────────┴─────────┴─────────┴─────────┘
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[[Relational Operations]] return '''negative one''' (-1, all bits set) and '''zero'''
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(0, no bits set) for '''true''' and '''false''', respectively. This allows relational
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tests to be inverted and combined using the bitwise logical operations.
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{{FixedEnd}}
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