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authorJoseph Hunkeler <jhunkeler@gmail.com>2015-07-08 20:46:52 -0400
committerJoseph Hunkeler <jhunkeler@gmail.com>2015-07-08 20:46:52 -0400
commitfa080de7afc95aa1c19a6e6fc0e0708ced2eadc4 (patch)
treebdda434976bc09c864f2e4fa6f16ba1952b1e555 /unix/boot/spp/rpp/rpprat/putbak.r
downloadiraf-linux-fa080de7afc95aa1c19a6e6fc0e0708ced2eadc4.tar.gz
Initial commit
Diffstat (limited to 'unix/boot/spp/rpp/rpprat/putbak.r')
-rw-r--r--unix/boot/spp/rpp/rpprat/putbak.r18
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diff --git a/unix/boot/spp/rpp/rpprat/putbak.r b/unix/boot/spp/rpp/rpprat/putbak.r
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+++ b/unix/boot/spp/rpp/rpprat/putbak.r
@@ -0,0 +1,18 @@
+#-h- putbak 254 local 12/01/80 15:54:34
+# putbak - push character back onto input
+ include defs
+
+ subroutine putbak (c)
+ character c
+
+ include COMMON_BLOCKS
+
+ if (bp <= 1)
+ call baderr ("too many characters pushed back.")
+ else {
+ bp = bp - 1
+ buf (bp) = c
+ }
+
+ return
+ end