diff --git a/xs.h b/xs.h
index c4c961b..c9825b9 100644
--- a/xs.h
+++ b/xs.h
@@ -118,6 +118,10 @@ void xs_data_get(const xs_data *value, void *data);
 
 void *xs_memmem(const char *haystack, int h_size, const char *needle, int n_size);
 
+xs_str *xs_hex_enc(const xs_val *data, int size);
+xs_val *xs_hex_dec(const xs_str *hex, int *size);
+int xs_is_hex(const char *str);
+
 
 #ifdef XS_ASSERT
 #include <assert.h>
@@ -1053,7 +1057,7 @@ const char *xs_number_str(const xs_number *v)
 }
 
 
-/* raw data blocks */
+/** raw data blocks **/
 
 xs_data *xs_data_new(const void *data, int size)
 /* returns a new raw data value */
@@ -1107,6 +1111,72 @@ void *xs_memmem(const char *haystack, int h_size, const char *needle, int n_size
 }
 
 
+/** hex **/
+
+xs_str *xs_hex_enc(const xs_val *data, int size)
+/* returns an hexdump of data */
+{
+    xs_str *s;
+    char *p;
+    int n;
+
+    p = s = xs_realloc(NULL, _xs_blk_size(size * 2 + 1));
+
+    for (n = 0; n < size; n++) {
+        snprintf(p, 3, "%02x", (unsigned char)data[n]);
+        p += 2;
+    }
+
+    *p = '\0';
+
+    return s;
+}
+
+
+xs_val *xs_hex_dec(const xs_str *hex, int *size)
+/* decodes an hexdump into data */
+{
+    int sz = strlen(hex);
+    xs_val *s = NULL;
+    char *p;
+    int n;
+
+    if (sz % 2)
+        return NULL;
+
+    p = s = xs_realloc(NULL, _xs_blk_size(sz / 2 + 1));
+
+    for (n = 0; n < sz; n += 2) {
+        int i;
+        if (sscanf(&hex[n], "%02x", &i) == 0) {
+            /* decoding error */
+            return xs_free(s);
+        }
+        else
+            *p = i;
+
+        p++;
+    }
+
+    *p = '\0';
+    *size = sz / 2;
+
+    return s;
+}
+
+
+int xs_is_hex(const char *str)
+/* returns 1 if str is an hex string */
+{
+    while (*str) {
+        if (strchr("0123456789abcdefABCDEF", *str++) == NULL)
+            return 0;
+    }
+
+    return 1;
+}
+
+
 #endif /* XS_IMPLEMENTATION */
 
 #endif /* _XS_H */
diff --git a/xs_encdec.h b/xs_encdec.h
index f4ffe22..14cb36e 100644
--- a/xs_encdec.h
+++ b/xs_encdec.h
@@ -4,9 +4,6 @@
 
 #define _XS_ENCDEC_H
 
- xs_str *xs_hex_enc(const xs_val *data, int size);
- xs_val *xs_hex_dec(const xs_str *hex, int *size);
- int xs_is_hex(const char *str);
  xs_str *xs_base64_enc(const xs_val *data, int sz);
  xs_val *xs_base64_dec(const xs_str *data, int *size);
  int xs_is_base64(const char *str);
@@ -14,72 +11,6 @@
 
 #ifdef XS_IMPLEMENTATION
 
-/** hex **/
-
-xs_str *xs_hex_enc(const xs_val *data, int size)
-/* returns an hexdump of data */
-{
-    xs_str *s;
-    char *p;
-    int n;
-
-    p = s = xs_realloc(NULL, _xs_blk_size(size * 2 + 1));
-
-    for (n = 0; n < size; n++) {
-        snprintf(p, 3, "%02x", (unsigned char)data[n]);
-        p += 2;
-    }
-
-    *p = '\0';
-
-    return s;
-}
-
-
-xs_val *xs_hex_dec(const xs_str *hex, int *size)
-/* decodes an hexdump into data */
-{
-    int sz = strlen(hex);
-    xs_val *s = NULL;
-    char *p;
-    int n;
-
-    if (sz % 2)
-        return NULL;
-
-    p = s = xs_realloc(NULL, _xs_blk_size(sz / 2 + 1));
-
-    for (n = 0; n < sz; n += 2) {
-        int i;
-        if (sscanf(&hex[n], "%02x", &i) == 0) {
-            /* decoding error */
-            return xs_free(s);
-        }
-        else
-            *p = i;
-
-        p++;
-    }
-
-    *p = '\0';
-    *size = sz / 2;
-
-    return s;
-}
-
-
-int xs_is_hex(const char *str)
-/* returns 1 if str is an hex string */
-{
-    while (*str) {
-        if (strchr("0123456789abcdefABCDEF", *str++) == NULL)
-            return 0;
-    }
-
-    return 1;
-}
-
-
 /** base64 */
 
 static char *xs_b64_tbl = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
diff --git a/xs_version.h b/xs_version.h
index fce4f34..e3b333f 100644
--- a/xs_version.h
+++ b/xs_version.h
@@ -1 +1 @@
-/* 494e346f92431041350f72431417eee03a23eafd */
+/* e0835629880a2846ad69c02a63a9209d5dd34945 */