diff --git a/include/gint/std/endian.h b/include/gint/std/endian.h
index 7b98628..82c5221 100644
--- a/include/gint/std/endian.h
+++ b/include/gint/std/endian.h
@@ -1,28 +1,2 @@
-//---
-// gint:std:endian - Endianness conversion
-//---
-
-#ifndef GINT_STD_ENDIAN
-#define GINT_STD_ENDIAN
-
-#include <gint/defs/types.h>
-#include <gint/defs/attributes.h>
-
-/* CASIO calculators are configured as big-endian. */
-
-#define htobe16(x) (x)
-#define htole16(x) (__builtin_bswap16(x))
-#define be16toh(x) (x)
-#define le16toh(x) (__builtin_bswap16(x))
-
-#define htobe32(x) (x)
-#define htole32(x) (__builtin_bswap32(x))
-#define be32toh(x) (x)
-#define le32toh(x) (__builtin_bswap32(x))
-
-#define htobe64(x) (x)
-#define htole64(x) (__builtin_bswap64(x))
-#define be64toh(x) (x)
-#define le64toh(x) (__builtin_bswap64(x))
-
-#endif /* GINT_STD_ENDIAN */
+/* Now provided by fxlibc. */
+#include <endian.h>