C:/Users/Dennis/src/lang/russell.orig/src/pass3/is_local.h

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/* test whether the identifier p is declared inside the tree with root */
/* r.                                                                  */
# define is_descendant(p,r)  \
        ((((p) -> post_num) < ((r) -> post_num)) \
        && (((p) -> pre_num) > ((r) -> pre_num)))

#define is_local(p,r)  \
        is_descendant(p -> id_last_definition, r)

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