Boilerplate code for rb_absint_size()

Yorick Peterse · Yorick Peterse · commit 6b132e1dfb7f · 2015-05-08T23:30:14.000+02:00
diff --git a/vm/capi/bignum.cpp b/vm/capi/bignum.cpp
@@ -164,4 +164,19 @@ extern "C" {
       INTEGER_PACK_LSWORD_FIRST | INTEGER_PACK_NATIVE_BYTE_ORDER |
       INTEGER_PACK_2COMP);
   }
+
+  size_t rb_absint_size(VALUE val, int *nlz_bits_ret)
+  {
+    VALUE abs = capi_fast_call(val, rb_intern("abs"), 0);
+    size_t size;
+
+    if(FIXNUM_P(abs)) {
+      size = 0;
+    // Bignum
+    } else {
+      size = rb_big_bytes_used(abs);
+    }
+
+    return size;
+  }
 }
diff --git a/vm/include/capi/ruby/ruby.h b/vm/include/capi/ruby/ruby.h
@@ -1106,6 +1106,9 @@ struct RTypedData {
   void    rb_big_pack(VALUE val, unsigned long *buf, long num_longs);
 
   int rb_big_sign(VALUE obj);
+
+  size_t rb_absint_size(VALUE val, int *nlz_bits_ret);
+
 #define RBIGNUM_SIGN(obj) rb_big_sign(obj)
 #define RBIGNUM_POSITIVE_P(b) RBIGNUM_SIGN(b)
 #define RBIGNUM_NEGATIVE_P(b) (!RBIGNUM_SIGN(b))
