From 53d3e939065aa7b7f98a807209b387a82012a3fd Mon Sep 17 00:00:00 2001
From: Steven Schronk <steven@schronk.com>
Date: Wed, 23 Dec 2009 17:39:48 -0600
Subject: [PATCH] Created custom resuable library of favorite functions.  Will
 continue to update in future.

---
 srs_lib.c | 88 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 srs_lib.h |  7 +++++
 2 files changed, 95 insertions(+)
 create mode 100644 srs_lib.c
 create mode 100644 srs_lib.h

diff --git a/srs_lib.c b/srs_lib.c
new file mode 100644
index 0000000..14c7835
--- /dev/null
+++ b/srs_lib.c
@@ -0,0 +1,88 @@
+#include <stdio.h>
+#include <string.h>
+
+#include "srs_lib.h"
+
+/* print contents of array */
+void print_array(char s[])
+{
+        int i;
+        for(i = 0; i < strlen(s); i++)
+                printf("%c", s[i]);
+        printf("\n");
+}
+
+/* print contents of array */
+void print_sparse_array(char s[][MAXLEN])
+{
+        int i, j;
+        for(i = 0; i < MAXLINES; i++)
+        {
+                int found = 0;
+                for(j = 0; j < MAXLEN; j++)
+                {
+                        if(s[i][j] != '\0') { found++; }
+                }
+                if(found > 0)
+                {
+                        printf("%d:\t", i);
+                        for(j = 0; j < MAXLEN; j++)
+                                printf("%c", s[i][j]);
+                        printf("\n");
+                }
+        }
+        printf("\n");
+}
+
+/* reverse contents of array in place */
+void reverse(char s[])
+{
+        int c, i, j;
+        for(i = 0, j = strlen(s)-1; i < j; i++, j--)
+        {
+                c = s[i];
+                s[i] = s[j];
+                s[j] = c;
+        }
+}
+
+/* convert integer to another base and store result in array of char */
+int itob(int n, char s[], int b)
+{
+        int sign, i = 0;
+
+        //create string of digits used to represent chars
+        char base_chars[] = { "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ" };
+
+        //check that base is neither too high nor too small
+        if(b < 2)
+        {
+                printf("Base must be between 2 and %d.\n", (int)strlen(base_chars)-1);
+                return -1;
+        }
+
+        if(b > strlen(base_chars)-1)
+        {
+                printf("Base must be %d or less.\n", (int)strlen(base_chars)-1);
+                return -1;
+        }
+
+        // remove sign from number
+        if(n < 0) { n = -n; sign = 1; }
+
+
+        // increment s array and store in that location the modulus of the number -vs- the base
+        // while number divided by base is larger than 0
+        i = 0;
+        do {
+                s[i++] = base_chars[n % b];
+        } while ((n /= b) > 0);
+
+        // add sign from above
+        if(sign == '1') { s[++i] = '-'; }
+        s[i] = '\0';
+
+        reverse(s);
+        return 1;
+}
+
diff --git a/srs_lib.h b/srs_lib.h
new file mode 100644
index 0000000..b7f1d61
--- /dev/null
+++ b/srs_lib.h
@@ -0,0 +1,7 @@
+#define MAXLINES 1000
+#define MAXLEN 1000
+
+void print_array(char s[]);
+void print_sparse_array(char s[][MAXLEN]);
+int itob(int n, char s[], int b);
+
-- 
2.11.4.GIT