Adding round function.

* arith.c (round1): New static function.
(roundiv): New function.

* configure: New test for C99 round function.

* eval.c (eval_init): Register round intrinsic.

* txr.1: Documented.

1 files changed, 1 insertions, 0 deletions

diff --git a/lib.h b/lib.h
index 6162c84f..590a912d 100644
--- a/lib.h
+++ b/lib.h
@@ -682,6 +682,7 @@ val floorf(val);
 val floordiv(val, val);
 val ceili(val);
 val ceildiv(val anum, val bnum);
+val roundiv(val anum, val bnum);
 val sine(val);
 val cosi(val);
 val tang(val);