From 5f4a5f59b072d4029107422d30b04941424c48b1 Mon Sep 17 00:00:00 2001
From: Joseph Redmon <pjreddie@gmail.com>
Date: Tue, 24 Feb 2015 02:52:05 +0000
Subject: [PATCH] captcha stuff

---
 src/utils.c |   11 +++++++++++
 1 files changed, 11 insertions(+), 0 deletions(-)

diff --git a/src/utils.c b/src/utils.c
index bf02ff3..1db8101 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -8,6 +8,17 @@
 
 #include "utils.h"
 
+
+int alphanum_to_int(char c)
+{
+    return (c < 58) ? c - 48 : c-87;
+}
+char int_to_alphanum(int i)
+{
+    if (i == 36) return '.';
+    return (i < 10) ? i + 48 : i + 87;
+}
+
 void pm(int M, int N, float *A)
 {
     int i,j;

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