akr	2013-11-24 18:15:34 +0900 (Sun, 24 Nov 2013)

  New Revision: 43829

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=43829

  Log:
    * include/ruby/defines.h (SIZEOF_ACTUAL_BDIGIT): Defined.
    
    * include/ruby/ruby.h (RBIGNUM_EMBED_LEN_MAX): Use
      SIZEOF_ACTUAL_BDIGIT instead of SIZEOF_BDIGITS.
      SIZEOF_BDIGITS can be different to sizeof(BDIGIT).

  Modified files:
    trunk/ChangeLog
    trunk/include/ruby/defines.h
    trunk/include/ruby/ruby.h
Index: include/ruby/defines.h
===================================================================
--- include/ruby/defines.h	(revision 43828)
+++ include/ruby/defines.h	(revision 43829)
@@ -168,12 +168,16 @@ void xfree(void*); https://github.com/ruby/ruby/blob/trunk/include/ruby/defines.h#L168
 # else
 #  define BDIGIT unsigned short
 #  define SIZEOF_BDIGITS (SIZEOF_LONG/2)
+#  define SIZEOF_ACTUAL_BDIGIT SIZEOF_LONG
 #  define BDIGIT_DBL unsigned long
 #  define BDIGIT_DBL_SIGNED long
 #  define PRI_BDIGIT_PREFIX "h"
 #  define PRI_BDIGIT_DBL_PREFIX "l"
 # endif
 #endif
+#ifndef SIZEOF_ACTUAL_BDIGIT
+# define SIZEOF_ACTUAL_BDIGIT SIZEOF_BDIGITS
+#endif
 
 #ifdef PRI_BDIGIT_PREFIX
 # define PRIdBDIGIT PRI_BDIGIT_PREFIX"d"
Index: include/ruby/ruby.h
===================================================================
--- include/ruby/ruby.h	(revision 43828)
+++ include/ruby/ruby.h	(revision 43829)
@@ -1069,8 +1069,8 @@ struct RStruct { https://github.com/ruby/ruby/blob/trunk/include/ruby/ruby.h#L1069
 
 #define RBIGNUM_EMBED_LEN_NUMBITS 3
 #ifndef RBIGNUM_EMBED_LEN_MAX
-# if (SIZEOF_VALUE*3/SIZEOF_BDIGITS) < (1 << RBIGNUM_EMBED_LEN_NUMBITS)-1
-#   define RBIGNUM_EMBED_LEN_MAX (SIZEOF_VALUE*3/SIZEOF_BDIGITS)
+# if (SIZEOF_VALUE*3/SIZEOF_ACTUAL_BDIGIT) < (1 << RBIGNUM_EMBED_LEN_NUMBITS)-1
+#   define RBIGNUM_EMBED_LEN_MAX (SIZEOF_VALUE*3/SIZEOF_ACTUAL_BDIGIT)
 # else
 #   define RBIGNUM_EMBED_LEN_MAX ((1 << RBIGNUM_EMBED_LEN_NUMBITS)-1)
 # endif
Index: ChangeLog
===================================================================
--- ChangeLog	(revision 43828)
+++ ChangeLog	(revision 43829)
@@ -1,3 +1,11 @@ https://github.com/ruby/ruby/blob/trunk/ChangeLog#L1
+Sun Nov 24 18:13:23 2013  Tanaka Akira  <akr@f...>
+
+	* include/ruby/defines.h (SIZEOF_ACTUAL_BDIGIT): Defined.
+
+	* include/ruby/ruby.h (RBIGNUM_EMBED_LEN_MAX): Use
+	  SIZEOF_ACTUAL_BDIGIT instead of SIZEOF_BDIGITS.
+	  SIZEOF_BDIGITS can be different to sizeof(BDIGIT).
+
 Sun Nov 24 13:49:08 2013  Tanaka Akira  <akr@f...>
 
 	* include/ruby/defines.h: Don't use int128_t for Bignum.

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