46 lines
1.0 KiB
Systemverilog
46 lines
1.0 KiB
Systemverilog
// IEEE1800-2017 Clause 22.5.3
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// The directive `undefineall directive shall undefine all text macros
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// previously defined by `define compiler directives within the compilation
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// unit. This directive takes no argument and may appear anywhere in the source
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// description.
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`undefineall
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`undefineall// Comment
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`undefineall // Comment
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`define FOO foo
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`define BAR bar
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`ifdef FOO
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// AAA
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// This block SHOULD be emitted from the preprocessor.
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`endif
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`ifndef FOO
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// AAA
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// This block should NOT be emitted from the preprocessor.
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`endif
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`ifdef BAR
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// BBB
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// This block SHOULD be emitted from the preprocessor.
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`endif
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`ifndef BAR
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// BBB
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// This block should NOT be emitted from the preprocessor.
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`endif
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`undefineall
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`ifdef FOO
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// CCC
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// This block should NOT be emitted from the preprocessor.
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`endif
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`ifndef FOO
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// CCC
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// This block SHOULD be emitted from the preprocessor.
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`endif
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`ifdef BAR
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// DDD
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// This block should NOT be emitted from the preprocessor.
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`endif
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`ifndef BAR
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// DDD
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// This block SHOULD be emitted from the preprocessor.
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`endif
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