From 3d68714e229aefd3a91ad16e169f600abca1653d Mon Sep 17 00:00:00 2001
From: Paolo Carlini <paolo.carlini@oracle.com>
Date: Fri, 20 Nov 2009 10:35:43 +0000
Subject: [PATCH] compatibility-c++0x.cc (_Fnv_hash<4>, [...]): Add.
2009-11-21 Paolo Carlini <paolo.carlini@oracle.com>
* src/compatibility-c++0x.cc (_Fnv_hash<4>, _Fnv_hash<8>): Add.
From-SVN: r154361
---
libstdc++-v3/ChangeLog | 4 +++
libstdc++-v3/src/compatibility-c++0x.cc | 33 +++++++++++++++++++++++++
2 files changed, 37 insertions(+)
diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 83e740d18cb0..3ae63049b92b 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,7 @@
+2009-11-21 Paolo Carlini <paolo.carlini@oracle.com>
+
+ * src/compatibility-c++0x.cc (_Fnv_hash<4>, _Fnv_hash<8>): Add.
+
2009-11-19 Benjamin Kosnik <bkoz@redhat.com>
* src/pool_allocator.cc: Adjust catch blocks.
diff --git a/libstdc++-v3/src/compatibility-c++0x.cc b/libstdc++-v3/src/compatibility-c++0x.cc
index 0e92135d403b..df28ecae3585 100644
--- a/libstdc++-v3/src/compatibility-c++0x.cc
+++ b/libstdc++-v3/src/compatibility-c++0x.cc
@@ -57,6 +57,39 @@ namespace std
}
};
+ template<>
+ struct _Fnv_hash<4>
+ {
+ static size_t
+ hash(const char* __first, size_t __length)
+ {
+ size_t __result = static_cast<size_t>(2166136261UL);
+ for (; __length > 0; --__length)
+ {
+ __result ^= static_cast<size_t>(*__first++);
+ __result *= static_cast<size_t>(16777619UL);
+ }
+ return __result;
+ }
+ };
+
+ template<>
+ struct _Fnv_hash<8>
+ {
+ static size_t
+ hash(const char* __first, size_t __length)
+ {
+ size_t __result =
+ static_cast<size_t>(14695981039346656037ULL);
+ for (; __length > 0; --__length)
+ {
+ __result ^= static_cast<size_t>(*__first++);
+ __result *= static_cast<size_t>(1099511628211ULL);
+ }
+ return __result;
+ }
+ };
+
#include "hash.cc"
template<>
--
GitLab