diff --git a/LibSupport.h b/LibSupport.h
index f787a87..bfcaeae 100644
--- a/LibSupport.h
+++ b/LibSupport.h
@@ -86,6 +86,8 @@
 #       else
 #            error Unsupported __riscv_xlen value
 #       endif
+#   elif defined(__loongarch64) 		
+#	define RADIX_BITS                     64
 #   else
 #       error Unable to determine RADIX_BITS from compiler environment
 #   endif
