lib: new functions nand, nor, nandf and norf.

* eval.c (me_nand, me_nor, nor_fun, nand_fun): New functions.
(eval_init): Register new intrinsics.

* lib.c (nandv, norv): New functions.

* lib.h (nandv, norv): Declared.

* txr.1: Documented, along with trivial fixes to the descriptions
of and, or, andf, orf and notf.

* stdlib/doc-syms.tl: Updated.

1 files changed, 10 insertions, 0 deletions

diff --git a/lib.c b/lib.c
index 91768c3a..b926f051 100644
--- a/lib.c
+++ b/lib.c
@@ -8862,6 +8862,16 @@ val notf(val fun)
   return func_f0v(fun, do_not);
 }
 
+val nandv(struct args *funlist)
+{
+  return notf(andv(funlist));
+}
+
+val norv(struct args *funlist)
+{
+  return notf(orv(funlist));
+}
+
 static val do_iff(val env, struct args *args_in)
 {
   cons_bind (condfun, choices, env);