* eval.c (eval_init): New intrinsic functions

chain, andf, orf, iff.

* lib.c (chainv): New function.
(do_and, do_or): Generalized to handle functions of
any arguments via apply.
(andf, orf): Turn do_and and do_or into variadic function instead of a
monadic function.
(do_iff): New static function.
(andv, orv, iff): New functions.

* lib.h (chainv, andv, orv, iff): New functions declared.

* txr.1: Doc stubs created.

* txr.vim: Updated.

1 files changed, 4 insertions, 0 deletions

diff --git a/lib.h b/lib.h
index a143a128..dae6c755 100644
--- a/lib.h
+++ b/lib.h
@@ -517,8 +517,12 @@ val curry_123_1(val fun3, val arg2, val arg3);
 val curry_123_23(val fun3, val arg1);
 val curry_1234_34(val fun3, val arg1, val arg2);
 val chain(val first_fun, ...);
+val chainv(val funlist);
 val andf(val first_fun, ...);
+val andv(val funlist);
 val orf(val first_fun, ...);
+val orv(val funlist);
+val iff(val condfun, val thenfun, val elsefun);
 val swap_12_21(val fun);
 val vector(val length);
 val vectorp(val vec);