prolog::rb_update/4

rb_update(+ Tree,+ Key,+ NewVal,- TreeN)*

Tree TreeN is tree Tree, but with value for Key associated with NewVal. Fails if it cannot find Key in Tree.

Private-func:

1. prolog::rb_update_4::rb_update/4(int ARG1, int ARG2, int ARG3, int ARG4)():