From 657217908b4a9e41de931b433b7b0a494abacb96 Mon Sep 17 00:00:00 2001
From: Kaz Kylheku <kaz@kylheku.com>
Date: Sat, 24 Sep 2016 07:13:05 -0700
Subject: awk macro: fconv conversions iz, xz, oz, bz and rz.

* share/txr/stdlib/conv.tl (sys:conv-let): New
flets iz, oz, xz, bz and rz.

* txr.1: Documented under fconv.
---
 share/txr/stdlib/conv.tl | 12 +++++++++++-
 txr.1                    | 16 ++++++++++++++++
 2 files changed, 27 insertions(+), 1 deletion(-)

diff --git a/share/txr/stdlib/conv.tl b/share/txr/stdlib/conv.tl
index 546b8759..9a25f8c5 100644
--- a/share/txr/stdlib/conv.tl
+++ b/share/txr/stdlib/conv.tl
@@ -33,7 +33,17 @@
           (b (arg)
             (toint arg 2))
           (r (arg)
-            (tofloat arg)))
+            (tofloat arg))
+          (iz (arg : radix)
+            (tointz arg radix))
+          (oz (arg)
+            (tointz arg 8))
+          (xz (arg)
+            (tointz arg 16))
+          (bz (arg)
+            (tointz arg 2))
+          (rz (arg)
+            (tofloatz arg)))
      ,*body))
 
 (defun sys:do-conv (lfl mfl tfl nm list)
diff --git a/txr.1 b/txr.1
index 71e3493a..0d380f1d 100644
--- a/txr.1
+++ b/txr.1
@@ -39104,6 +39104,22 @@ the floating-point value which it denotes. The expression
 .code "(r str)"
 is equivalent to
 .codn "(tofloat str)" .
+.ccIP @, iz @, oz @, xz @ bz and @ rz
+Conversion similar to
+.codn i ,
+.codn o ,
+.codn x ,
+.code b
+and
+.codn r ,
+but using
+.code tointz
+and
+.codn tofloatz .
+Thus fields which are non-numeric strings or the object
+.code nil
+get converted to 0, or 0.0 in the case of
+.codn rz .
 .RE
 
 .SS* Environment Variables and Command Line
-- 
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