lib: new function, relate.

* eval.c (eval_init): Register new intrinsic relate.

* lib.c (do_relate, do_relate_dfl): New static functions.
(relate): New function.

* lib.h (relate): Declared.

* txr.1: Documented.

1 files changed, 1 insertions, 0 deletions

diff --git a/eval.c b/eval.c
index 27aca963..abd28344 100644
--- a/eval.c
+++ b/eval.c
@@ -6164,6 +6164,7 @@ void eval_init(void)
   reg_fun(intern(lit("rsearch"), user_package), func_n4o(rsearch, 2));
   reg_fun(intern(lit("where"), user_package), func_n2(where));
   reg_fun(intern(lit("select"), user_package), func_n2(sel));
+  reg_fun(intern(lit("relate"), user_package), func_n3o(relate, 2));
 
   reg_fun(intern(lit("rcons"), user_package), func_n2(rcons));
   reg_fun(intern(lit("rangep"), user_package), func_n1(rangep));