1 files changed, 21 insertions, 0 deletions
diff --git a/src/libbiguint/bu_copy.c b/src/libbiguint/bu_copy.c
new file mode 100644
index 0000000..1358aca
--- /dev/null
+++ b/src/libbiguint/bu_copy.c
@@ -0,0 +1,21 @@
+/* ISC license. */
+
+/* OpenBSD needs that for EOVERFLOW. wtfbsdseriously */
+#define _BSD_SOURCE
+
+#include <errno.h>
+#include <skalibs/uint32.h>
+#include <skalibs/biguint.h>
+
+int bu_copy (uint32 *b, unsigned int bn, uint32 const *a, unsigned int an)
+{
+  register unsigned int alen = bu_len(a, an) ;
+  if (bn < alen)
+  {
+    bu_copy_internal(b, a, bn) ;
+    return (errno = EOVERFLOW, 0) ;
+  }
+  bu_copy_internal(b, a, alen) ;
+  bu_zero(b + alen, bn - alen) ;
+  return 1 ;
+}