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int64to32: compile only in 32-bit mode

--- a/src/hashing.c

+++ b/src/hashing.c

@@ -41,6 +41,7 @@

 	return a;

 }

+#if !defined(BITS64)

 u32int

 int64to32hash(u64int key)

 {

@@ -52,6 +53,7 @@

 	key = key ^ (key >> 22);

 	return (u32int)key;

 }

+#endif

 u64int

 memhash64(const char *buf, usize n)

--- a/src/hashing.h

+++ b/src/hashing.h

@@ -4,10 +4,10 @@

 #define memhash memhash64

 #else

 #define memhash memhash32

+u32int int64to32hash(u64int key) sl_constfn;

 #endif

 sl_v nextipow2(sl_v a) sl_constfn;

 sl_v inthash(sl_v a) sl_constfn;

-u32int int64to32hash(u64int key) sl_constfn;

 u64int memhash64(const char *buf, usize sz) sl_nonnull(1);

 u32int memhash32(const char *buf, usize sz) sl_nonnull(1);

-- 

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