1 files changed, 11 insertions, 0 deletions

diff --git a/include/endianness.h b/include/endianness.h
index 1d414b3..099877a 100644
--- a/include/endianness.h
+++ b/include/endianness.h
@@ -109,4 +109,15 @@
 #define htole64 le64toh
 #endif
 
+#if (defined(__BIG_ENDIAN__) \
+     && !defined(__FLOAT_WORD_ORDER__)) \
+ || (defined(__FLOAT_WORD_ORDER__) \
+     && __FLOAT_WORD_ORDER__ == __ORDER_BIG_ENDIAN__)
+#define float_bswap64(x) bswap64(x)
+#define float_bswap32(x) bswap32(x)
+#else
+#define float_bswap64(x) (x)
+#define float_bswap32(x) (x)
+#endif
+
 #endif /* ENDIANNESS_H */