New function, clamp.

* eval.c (eval_init): Register clamp as intrinsic function.

* lib.c (clamp): New function.

* lib.h (clamp): Declared.

* txr.1: Documented.

1 files changed, 1 insertions, 0 deletions

diff --git a/eval.c b/eval.c
index b7e31992..b5e334c5 100644
--- a/eval.c
+++ b/eval.c
@@ -4349,6 +4349,7 @@ void eval_init(void)
   reg_fun(intern(lit("/="), user_package), func_n0v(numneqv));
   reg_fun(intern(lit("max"), user_package), func_n1v(maxv));
   reg_fun(intern(lit("min"), user_package), func_n1v(minv));
+  reg_fun(intern(lit("clamp"), user_package), func_n3(clamp));
   reg_fun(intern(lit("pos-max"), user_package), func_n3o(pos_max, 1));
   reg_fun(intern(lit("pos-min"), user_package), func_n3o(pos_min, 1));
   reg_fun(intern(lit("in"), user_package), func_n4o(in, 2));