normal	2018-08-27 17:48:49 +0900 (Mon, 27 Aug 2018)

  New Revision: 64554

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=64554

  Log:
    hrtime.h: add note explaining current use of uint64_t [ci skip]
    
    [ruby-core:88678]

  Modified files:
    trunk/hrtime.h
Index: hrtime.h
===================================================================
--- hrtime.h	(revision 64553)
+++ hrtime.h	(revision 64554)
@@ -8,7 +8,8 @@ https://github.com/ruby/ruby/blob/trunk/hrtime.h#L8
 
 /*
  * Hi-res monotonic clock.  It is currently nsec resolution, which has over
- * 500 years of range (unsigned).
+ * 500 years of range (with an unsigned 64-bit integer).  Developers
+ * targeting small systems may try 32-bit and low-resolution (milliseconds).
  *
  * TBD: Is nsec even necessary? usec resolution seems enough for userspace
  * and it'll be suitable for use with devices lasting over 500,000 years

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