1 files changed, 4 insertions, 0 deletions
diff --git a/README.EXT b/README.EXT
index 6f40185..dc3136c 100644
--- a/README.EXT
+++ b/README.EXT
@@ -1060,6 +1060,10 @@ NUM2SSIZET(value), SSIZET2NUM(ssize) ::
 
   Numeric <-> ssize_t
 
+rb_integer_pack(value, words, numwords, wordsize, nails, flags), rb_integer_unpack(words, numwords, wordsize, nails, flags) ::
+
+  Numeric <-> Arbitrary size integer buffer
+
 NUM2DBL(value) ::
 
   Numeric -> double