2 files changed, 8 insertions, 9 deletions
diff --git a/stdlib/a64l.c b/stdlib/a64l.c
index 9d462c77f3..d1dd3a9b6b 100644
--- a/stdlib/a64l.c
+++ b/stdlib/a64l.c
@@ -24,7 +24,7 @@ a64l (string)
      const char *string;
 {
   size_t cnt;
-  long int result = 0l;
+  unsigned long int result = 0l;
 
   for (cnt = 0; cnt < 6; ++cnt)
     {
@@ -50,5 +50,5 @@ a64l (string)
 	}
     }
 
-  return result;
+  return (long int) result;
 }
diff --git a/stdlib/l64a.c b/stdlib/l64a.c
index ba7a910c96..9fbde5d139 100644
--- a/stdlib/l64a.c
+++ b/stdlib/l64a.c
@@ -36,21 +36,20 @@ char *
 l64a (n)
      long int n;
 {
+  unsigned long int m = (unsigned long int) n;
   static char result[7];
   int cnt;
 
-  if (n <= 0l)
-    /* The value for N == 0 is defined to be the empty string.  When a
-       negative value is given the result is undefined.  We will
-       return the empty string.  */
+  if (m == 0l)
+    /* The value for N == 0 is defined to be the empty string. */
     return (char *) "";
 
   result[6] = '\0';
 
-  for (cnt = 5; n > 0; --cnt)
+  for (cnt = 5; m > 0; --cnt)
     {
-      result[cnt] = conv_table[n & 0x3f];
-      n >>= 6;
+      result[cnt] = conv_table[m & 0x3f];
+      m >>= 6;
     }
 
   return &result[cnt + 1];