1 files changed, 36 insertions, 0 deletions
diff --git a/ext/-test-/integer/core_ext.c b/ext/-test-/integer/core_ext.c
new file mode 100644
index 0000000000..e364aa4b40
--- /dev/null
+++ b/ext/-test-/integer/core_ext.c
@@ -0,0 +1,36 @@
+#include "internal/numeric.h"
+
+static VALUE
+int_bignum_p(VALUE klass, VALUE self)
+{
+    return RB_TYPE_P(self, T_BIGNUM) ? Qtrue : Qfalse;
+}
+
+static VALUE
+int_fixnum_p(VALUE klass, VALUE self)
+{
+    return FIXNUM_P(self) ? Qtrue : Qfalse;
+}
+
+static VALUE
+rb_int_to_bignum(VALUE klass, VALUE x)
+{
+    if (FIXNUM_P(x))
+        x = rb_int2big(FIX2LONG(x));
+    return x;
+}
+
+static VALUE
+positive_pow(VALUE klass, VALUE x, VALUE y)
+{
+    return rb_int_positive_pow(NUM2LONG(x), NUM2ULONG(y));
+}
+
+void
+Init_core_ext(VALUE klass)
+{
+    rb_define_singleton_method(klass, "bignum?", int_bignum_p, 1);
+    rb_define_singleton_method(klass, "fixnum?", int_fixnum_p, 1);
+    rb_define_singleton_method(klass, "to_bignum", rb_int_to_bignum, 1);
+    rb_define_singleton_method(klass, "positive_pow", positive_pow, 2);
+}