From 9ca3fc3a1d157ef7b3eb78453f96ae466b765306 Mon Sep 17 00:00:00 2001
From: aiju <aiju@phicode.de>
Date: Sat, 27 Jun 2015 22:00:33 +0200
Subject: added approx(1)

---
 rc/bin/approx | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 rc/bin/approx

diff --git a/rc/bin/approx b/rc/bin/approx
new file mode 100644
index 000000000..b790da532
--- /dev/null
+++ b/rc/bin/approx
@@ -0,0 +1,23 @@
+#!/bin/rc
+if(! ~ $#* 3){
+	echo usage: approx ratio min max
+	exit usage
+}
+echo $1 $2 $3 | awk '
+{
+	y=$1;
+	min=$2;
+	max=$3;
+	for(i = min; i <= max; i++){
+		k = int(y*i+0.5);
+		z = (k/i/y-1)*100;
+		if(z < 0)
+			z = -z;
+		if(i == min || z < zm){
+			zm = z;
+			printf("%d/%d\t%g\t%.2g%%\n", k, i, k/i, z);
+		}
+	}
+	exit
+}
+'
-- 
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