From fa080de7afc95aa1c19a6e6fc0e0708ced2eadc4 Mon Sep 17 00:00:00 2001
From: Joseph Hunkeler <jhunkeler@gmail.com>
Date: Wed, 8 Jul 2015 20:46:52 -0400
Subject: Initial commit

---
 unix/boot/spp/rpp/ratlibr/stake.r | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 unix/boot/spp/rpp/ratlibr/stake.r

(limited to 'unix/boot/spp/rpp/ratlibr/stake.r')

diff --git a/unix/boot/spp/rpp/ratlibr/stake.r b/unix/boot/spp/rpp/ratlibr/stake.r
new file mode 100644
index 00000000..52a9a096
--- /dev/null
+++ b/unix/boot/spp/rpp/ratlibr/stake.r
@@ -0,0 +1,20 @@
+include	defs
+
+# stake --- take characters from a string APL-style
+
+   integer function stake (from, to, chars)
+   character from (ARB), to (ARB)
+   integer chars
+
+   integer len, start
+   integer length, ctoc, max0
+
+   len = length (from)
+   if (chars < 0) {
+      start = max0 (len + chars, 0)
+      return (ctoc (from (start + 1), to, len + 1))
+      }
+   else
+      return (ctoc (from, to, chars + 1))
+
+   end
-- 
cgit