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SUBROUTINE IFFY ( USE1, USE2, L )
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* Tests parsing & type-checking of various IF forms.
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* this block-if statement is OK
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* else-if statement is OK
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* this logical if is OK
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IF( M .eq. 3 ) L = L+1
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* this arithmetic if is OK
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* this arithmetic if is OK
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* violate a block if statement
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* violate an elseif statement
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* violate a logical if statement
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* violate an arithmetic if statement
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IF( L .EQ. 3 ) 200, 200, 200