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diff --git a/polly/lib/External/isl/imath/examples/input.c b/polly/lib/External/isl/imath/examples/input.c
new file mode 100644
index 00000000000..6997c3e9321
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+++ b/polly/lib/External/isl/imath/examples/input.c
@@ -0,0 +1,120 @@
+/*
+  input.c
+
+  Demonstrates basic input and output of arbitrary precision integers using
+  IMath.
+
+  by Michael J. Fromberger <http://spinning-yarns.org/michael/>
+  Copyright (C) 2003-2008 Michael J. Fromberger, All Rights Reserved.
+
+  Permission is hereby granted, free of charge, to any person obtaining a copy
+  of this software and associated documentation files (the "Software"), to deal
+  in the Software without restriction, including without limitation the rights
+  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+  copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+  SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "imrat.h"
+
+int main(int argc, char *argv[])
+{
+  mp_size   radix = 10;  /* Default output radix */
+  mpq_t     value;
+  mp_result res;
+  char      *endp;
+
+  if(argc < 2) {
+    fprintf(stderr, "Usage: input <value> [output-base]\n");
+    return 1;
+  }
+  if(argc > 2) {
+    if((radix = atoi(argv[2])) < MP_MIN_RADIX ||
+       (radix > MP_MAX_RADIX)) {
+      fprintf(stderr, "Error:  Specified radix is out of range (%d)\n",
+	      radix);
+      return 1;
+    }
+  }
+
+  /* Initialize a new value, initially zero; illustrates how to check
+     for errors (e.g., out of memory) and display a message.  */
+  if((res = mp_rat_init(&value)) != MP_OK) {
+    fprintf(stderr, "Error in mp_rat_init(): %s\n", 
+	    mp_error_string(res));
+    return 1;
+  }
+
+  /* Read value in base 10 */
+  if((res = mp_rat_read_ustring(&value, 0, argv[1], &endp)) != MP_OK) {
+    fprintf(stderr, "Error in mp_rat_read_ustring(): %s\n",
+	    mp_error_string(res));
+    
+    if(res == MP_TRUNC)
+      fprintf(stderr, " -- remaining input is: %s\n", endp);
+    
+    mp_rat_clear(&value);
+    return 1;
+  }
+  
+  printf("Here is your value in base %d\n", radix);
+  {
+    mp_result buf_size, res;
+    char *obuf;
+
+    if(mp_rat_is_integer(&value)) {
+      /* Allocate a buffer big enough to hold the given value, including
+	 sign and zero terminator. */
+      buf_size = mp_int_string_len(MP_NUMER_P(&value), radix);
+      obuf = malloc(buf_size);
+
+      /* Convert the value to a string in the desired radix. */
+      if((res = mp_int_to_string(MP_NUMER_P(&value), radix, 
+				 obuf, buf_size)) != MP_OK) {
+	fprintf(stderr, "Converstion to base %d failed: %s\n",
+		radix, mp_error_string(res));
+	mp_rat_clear(&value);
+	return 1;
+      }
+    } 
+    else {
+      /* Allocate a buffer big enough to hold the given value, including
+	 sign and zero terminator. */
+      buf_size = mp_rat_string_len(&value, radix);
+      obuf = malloc(buf_size);
+
+      /* Convert the value to a string in the desired radix. */
+      if((res = mp_rat_to_string(&value, radix, obuf, buf_size)) != MP_OK) {
+	fprintf(stderr, "Conversion to base %d failed: %s\n",
+		radix, mp_error_string(res));
+	mp_rat_clear(&value);
+	return 1;
+      }
+    }
+    fputs(obuf, stdout);
+    fputc('\n', stdout);
+    free(obuf);
+  }
+
+  /* When you are done with a value, it must be "cleared" to release
+     the memory it occupies */
+  mp_rat_clear(&value);
+  return 0;
+}
+
+/* Here there be dragons */