diff -r ae5a98f0545c -r 88625853ae74 ucx/utils.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ucx/utils.c	Mon Aug 12 14:40:19 2013 +0200
@@ -0,0 +1,100 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright 2013 Olaf Wintermann. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *   1. Redistributions of source code must retain the above copyright
+ *      notice, this list of conditions and the following disclaimer.
+ *
+ *   2. Redistributions in binary form must reproduce the above copyright
+ *      notice, this list of conditions and the following disclaimer in the
+ *      documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "utils.h"
+#include "math.h"
+
+/* COPY FUCNTIONS */
+void* ucx_strcpy(void* s, void* data) {
+    char *str = (char*) s;
+    size_t n = 1+strlen(str);
+    char *cpy = (char*) malloc(n);
+    memcpy(cpy, str, n);
+    return cpy;
+}
+
+void* ucx_memcpy(void* m, void* n) {
+    size_t k = *((size_t*)n);
+    void *cpy = malloc(k);
+    memcpy(cpy, m, k);
+    return cpy;
+}
+
+/* COMPARE FUNCTION */
+
+int ucx_strcmp(void *s1, void *s2, void *data) {
+    return strcmp((char*)s1, (char*)s2);
+}
+
+int ucx_strncmp(void *s1, void *s2, void *n) {
+    return strncmp((char*)s1, (char*)s2, *((size_t*) n));
+}
+
+int ucx_intcmp(void *i1, void *i2, void *data) {
+   int a = *((int*) i1);
+   int b = *((int*) i2);
+   if (a == b) {
+       return 0;
+   } else {
+       return a < b ? -1 : 1;
+   }
+}
+
+int ucx_floatcmp(void *f1, void *f2, void *epsilon) {
+   float a = *((float*) f1);
+   float b = *((float*) f2);
+   float e = !epsilon ? 1e-6f : *((float*)epsilon);
+   if (fabsf(a - b) < e) {
+       return 0;
+   } else {
+       return a < b ? -1 : 1;
+   }
+}
+
+int ucx_doublecmp(void *d1, void *d2, void *epsilon) {
+   double a = *((float*) d1);
+   double b = *((float*) d2);
+   double e = !epsilon ? 1e-14 : *((double*)epsilon);
+   if (fabs(a - b) < e) {
+       return 0;
+   } else {
+       return a < b ? -1 : 1;
+   }
+}
+
+int ucx_ptrcmp(void *ptr1, void *ptr2, void *data) {
+    if (ptr1 == ptr2) {
+        return 0;
+    } else {
+        return ptr1 < ptr2 ? -1 : 1;
+    }
+}
+
+int ucx_memcmp(void *ptr1, void *ptr2, void *n) {
+    return memcmp(ptr1, ptr2, *((size_t*)n));
+}