From ce168c2143f5d622bb094bf5f831640082bacea1 Mon Sep 17 00:00:00 2001
From: tomsmeding <tom.smeding@gmail.com>
Date: Thu, 25 May 2017 17:38:51 +0200
Subject: Add useful functions to stdlib.rip

---
 stdlib.rip | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/stdlib.rip b/stdlib.rip
index 7d209b7..f35641b 100644
--- a/stdlib.rip
+++ b/stdlib.rip
@@ -65,6 +65,20 @@ F<strcmp>[
 	PP
 ]
 
+0I[takes string, returns integer (assumes correct input: only digits and at most
+   one minus); replaces string on stack]
+F<parseint>[
+	<strrev>
+	0 S
+	DW[
+		D 28pM
+		D'-EI[P S 0Ss S 0]
+		DI['0s 3R 9ima S 0]
+		P 28pq
+	D]
+	P
+]
+
 
 0I[initialises variable store at beginning of stack (no args) (CALL ONLY ONCE)]
 F<varinit>[
@@ -183,3 +197,14 @@ F<strsend>[
 F<dup2>[
 	SD3RD3r
 ]
+
+0I[number -> n'th stack item from top (top is 1);
+   a b c d e  4<sget>  -> a b c d e b]
+F<sget>[iDRD3Rr]
+
+0I[value, number -> replace n'th stack item AFTER value with value (top is 1);
+   a b c d e  X 2<sput>  ->  a b c X e]
+F<sput>[DiiRPr]
+
+0I[quits program]
+F<quit>[`]
-- 
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