split internal.h into files

One day, I could not resist the way it was written.  I finally started
to make the code clean.  This changeset is the beginning of a series of
housekeeping commits.  It is a simple refactoring; split internal.h into
files, so that we can divide and concur in the upcoming commits.  No
lines of codes are either added or removed, except the obvious file
headers/footers.  The generated binary is identical to the one before.

1 files changed, 28 insertions, 0 deletions

diff --git a/internal/complex.h b/internal/complex.h
new file mode 100644
index 0000000000..7a363fc0e5
--- /dev/null
+++ b/internal/complex.h
@@ -0,0 +1,28 @@
+#ifndef INTERNAL_COMPLEX_H /* -*- C -*- */
+#define INTERNAL_COMPLEX_H
+/**
+ * @file
+ * @brief      Internal header for Complex.
+ * @author     \@shyouhei
+ * @copyright  This  file  is   a  part  of  the   programming  language  Ruby.
+ *             Permission  is hereby  granted,  to  either redistribute  and/or
+ *             modify this file, provided that  the conditions mentioned in the
+ *             file COPYING are met.  Consult the file for details.
+ */
+
+struct RComplex {
+    struct RBasic basic;
+    VALUE real;
+    VALUE imag;
+};
+
+#define RCOMPLEX(obj) (R_CAST(RComplex)(obj))
+
+/* shortcut macro for internal only */
+#define RCOMPLEX_SET_REAL(cmp, r) RB_OBJ_WRITE((cmp), &((struct RComplex *)(cmp))->real,(r))
+#define RCOMPLEX_SET_IMAG(cmp, i) RB_OBJ_WRITE((cmp), &((struct RComplex *)(cmp))->imag,(i))
+
+/* complex.c */
+VALUE rb_dbl_complex_new_polar_pi(double abs, double ang);
+
+#endif /* INTERNAL_COMPLEX_H */