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/dsget.r | 50 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 unix/boot/spp/rpp/ratlibr/dsget.r

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

diff --git a/unix/boot/spp/rpp/ratlibr/dsget.r b/unix/boot/spp/rpp/ratlibr/dsget.r
new file mode 100644
index 00000000..4c62ce62
--- /dev/null
+++ b/unix/boot/spp/rpp/ratlibr/dsget.r
@@ -0,0 +1,50 @@
+include	defs
+
+# dsget --- get pointer to block of at least w available words
+
+   pointer function dsget (w)
+   integer w
+
+   DS_DECL(Mem, 1)
+
+   pointer p, q, l
+
+   integer n, k, junk
+   integer getlin
+
+   character c (10)
+
+   n = w + DS_OHEAD
+   q = DS_AVAIL
+
+   repeat {
+      p = Mem (q + DS_LINK)
+      if (p == LAMBDA) {
+	 call remark ("in dsget: out of storage space.")
+	 call remark ("type 'c' or 'i' for char or integer dump.")
+	 junk = getlin (c, STDIN)
+	 if (c (1) == LETC | c (1) == BIGC)
+	    call dsdump (LETTER)
+	 else if (c (1) == LETI | c (1) == BIGI)
+	    call dsdump (DIGIT)
+	 call error ("program terminated.")
+	 }
+      if (Mem (p + DS_SIZE) >= n)
+	 break
+      q = p
+      }
+
+   k = Mem (p + DS_SIZE) - n
+   if (k >= DS_CLOSE) {
+      Mem (p + DS_SIZE) = k
+      l = p + k
+      Mem (l + DS_SIZE) = n
+      }
+   else {
+      Mem (q + DS_LINK) = Mem (p + DS_LINK)
+      l = p
+      }
+
+   return (l + DS_OHEAD)
+
+   end
-- 
cgit