--- a/native/fdlibm/ieeefp.h 2026-05-04 19:06:00.410681778 +0100
+++ b/native/fdlibm/ieeefp.h 2026-05-04 19:24:22.954712830 +0100
@@ -35,6 +35,14 @@
 #endif
 #endif
 
+#ifdef __riscv
+#ifdef __BIG_ENDIAN__
+#define __IEEE_BIG_ENDIAN
+#else
+#define __IEEE_LITTLE_ENDIAN
+#endif
+#endif
+
 #ifdef __hppa__
 #define __IEEE_BIG_ENDIAN
 #endif