1 files changed, 13 insertions, 0 deletions
diff --git a/src/include/ipxe/bigint.h b/src/include/ipxe/bigint.h
index 36138dd64..820d306b8 100644
--- a/src/include/ipxe/bigint.h
+++ b/src/include/ipxe/bigint.h
@@ -8,6 +8,8 @@
 
 FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
 
+#include <assert.h>
+
 /**
  * Define a big-integer type
  *
@@ -177,6 +179,17 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
 	} while ( 0 )
 
 /**
+ * Copy big integer
+ *
+ * @v source		Source big integer
+ * @v dest		Destination big integer
+ */
+#define bigint_copy( source, dest ) do {				\
+	build_assert ( sizeof ( *(source) ) == sizeof ( *(dest) ) );	\
+	bigint_shrink ( (source), (dest) );				\
+	} while ( 0 )
+
+/**
  * Multiply big integers
  *
  * @v multiplicand	Big integer to be multiplied