commit 2bb92620ce92f60a0c8b275159c9057c88d48765
Author: Mattias Andrée <maandree_AT_kth.se>
AuthorDate: Sat Apr 30 22:51:50 2016 +0200
Commit: Mattias Andrée <maandree_AT_kth.se>
CommitDate: Sat Apr 30 22:51:50 2016 +0200
Some things to keep in mind when optimising
Signed-off-by: Mattias Andrée <maandree_AT_kth.se>
diff --git a/zahl-internals.h b/zahl-internals.h
index afdf416..2024919 100644
--- a/zahl-internals.h
+++ b/zahl-internals.h
_AT_@ -44,11 +44,15 @@
# define ZAHL_Os /* Don't know how. */
# define ZAHL_Oz /* Don't know how. */
#endif
+/* Mostly ZAHL_O2, but sometimes ZAHL_O3, are useful.
+ * But note, often it optimal to not use any of them. */
#define ZAHL_BITS_PER_CHAR 64
#define ZAHL_LB_BITS_PER_CHAR 6
#define ZAHL_CHAR_MAX UINT64_MAX
+/* Note: These, cannot be changed willy-nilly, some code depends
+ * on them, be cause being flexible would just be too painful. */
#define ZAHL_FLOOR_BITS_TO_CHARS(bits) ((bits) >> ZAHL_LB_BITS_PER_CHAR)
Received on Sat Apr 30 2016 - 22:56:37 CEST
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