X-Git-Url: http://git.marmaro.de/?p=mmh;a=blobdiff_plain;f=sbr%2Futils.c;h=c433e8f0fe72230d74d66a66bb9c5043e43cb9a6;hp=2a7a1ccfb150ac67826d8b23abb0a953711f6209;hb=0cebd8284370988c8b1807ef2544bd80804d074e;hpb=ac9b744ede346c3929794a14ae5c8d3580b7fdb6

diff --git a/sbr/utils.c b/sbr/utils.c
index 2a7a1cc..c433e8f 100644
--- a/sbr/utils.c
+++ b/sbr/utils.c
@@ -141,3 +141,27 @@ void create_folder(char *folder, int autocreate, void (*done_callback)())
             adios (NULL, "unable to create folder %s", folder);
     }
 }
+
+/*
+ * num_digits
+ *      Return the number of digits in a nonnegative integer.
+ */
+int
+num_digits (int n)
+{
+    int ndigits = 0;
+
+    /* Sanity check */
+    if (n < 0)
+        adios (NULL, "oops, num_digits called with negative value");
+
+    if (n == 0)
+        return 1;
+
+    while (n) {
+        n /= 10;
+        ndigits++;
+    }
+
+    return ndigits;
+}