KJ16609/gcc
1
0
Fork 0
mirror of https://gcc.gnu.org/git/gcc.git synced 2026-02-22 03:46:53 -05:00
Code Issues Packages Projects Releases Wiki Activity

PR libstdc++/28080 (partial)

Browse Source 
2007-03-03  Paolo Carlini  <pcarlini@suse.de>

	PR libstdc++/28080 (partial)
	* include/tr1/functional: Split out hash bits to...
	* include/tr1/functional_hash.h: ...here.
	* include/Makefile.am: Add.
	* include/tr1/unordered_set: Include the latter instead.
	* include/tr1/unordered_map: Likewise.
	* include/Makefile.in: Regenerate.

	* include/tr1/utility (get(std::pair<>&), get(const std::pair<>&)):
	Mark inline.

From-SVN: r122518
This commit is contained in:
Paolo Carlini
2007-03-04 00:20:26 +00:00
committed by Paolo Carlini
parent 7d8d359db3
commit 16bdb42495
7 changed files with 28 additions and 206 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
libstdc++-v3/ChangeLog
View File

@@ -1,3 +1,16 @@
2007-03-03 Paolo Carlini <pcarlini@suse.de>
PR libstdc++/28080 (partial)
* include/tr1/functional: Split out hash bits to...
* include/tr1/functional_hash.h: ...here.
* include/Makefile.am: Add.
* include/tr1/unordered_set: Include the latter instead.
* include/tr1/unordered_map: Likewise.
* include/Makefile.in: Regenerate.
* include/tr1/utility (get(std::pair<>&), get(const std::pair<>&)):
Mark inline.
2007-02-21 Mark Mitchell <mark@codesourcery.com>
* testsuite/lib/libstdc++.exp (libstdc++_init): Compile testglue

3
libstdc++-v3/include/Makefile.am
View File

@@ -1,6 +1,6 @@
## Makefile for the include subdirectory of the GNU C++ Standard library.
##
## Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006
## Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
## Free Software Foundation, Inc.
##
## This file is part of the libstdc++ version 3 distribution.
@@ -579,6 +579,7 @@ tr1_headers = \
${tr1_srcdir}/fenv.h \
${tr1_srcdir}/float.h \
${tr1_srcdir}/functional \
${tr1_srcdir}/functional_hash.h \
${tr1_srcdir}/functional_iterate.h \
${tr1_srcdir}/hashtable \
${tr1_srcdir}/hashtable_policy.h \

1
libstdc++-v3/include/Makefile.in
View File

@@ -800,6 +800,7 @@ tr1_headers = \
${tr1_srcdir}/fenv.h \
${tr1_srcdir}/float.h \
${tr1_srcdir}/functional \
${tr1_srcdir}/functional_hash.h \
${tr1_srcdir}/functional_iterate.h \
${tr1_srcdir}/hashtable \
${tr1_srcdir}/hashtable_policy.h \

199
libstdc++-v3/include/tr1/functional
View File

@@ -1,6 +1,6 @@
// TR1 functional header -*- C++ -*-
// Copyright (C) 2004, 2005, 2006 Free Software Foundation, Inc.
// Copyright (C) 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
@@ -40,9 +40,7 @@
#include <typeinfo>
#include <tr1/type_traits>
#include <ext/type_traits.h>
#include <string> // for std::tr1::hash
#include <cstdlib> // for std::abort
#include <cmath> // for std::frexp
#include <cstdlib> // for std::abort
#include <tr1/tuple>
namespace std
@@ -1093,7 +1091,6 @@ _GLIBCXX_BEGIN_NAMESPACE(tr1)
_GLIBCXX_END_NAMESPACE
}
#define _GLIBCXX_JOIN(X,Y) _GLIBCXX_JOIN2( X , Y )
#define _GLIBCXX_JOIN2(X,Y) _GLIBCXX_JOIN3(X,Y)
#define _GLIBCXX_JOIN3(X,Y) X##Y
@@ -1104,196 +1101,6 @@ _GLIBCXX_END_NAMESPACE
#undef _GLIBCXX_JOIN2
#undef _GLIBCXX_JOIN
namespace std
{
_GLIBCXX_BEGIN_NAMESPACE(tr1)
// Definition of default hash function std::tr1::hash<>. The types for
// which std::tr1::hash<T> is defined is in clause 6.3.3. of the PDTR.
template<typename T>
struct hash;
#define _TR1_hashtable_define_trivial_hash(_Tp) \
template<> \
struct hash<_Tp> \
: public std::unary_function<_Tp, std::size_t> \
{ \
std::size_t \
operator()(_Tp __val) const \
{ return static_cast<std::size_t>(__val); } \
}
_TR1_hashtable_define_trivial_hash(bool);
_TR1_hashtable_define_trivial_hash(char);
_TR1_hashtable_define_trivial_hash(signed char);
_TR1_hashtable_define_trivial_hash(unsigned char);
_TR1_hashtable_define_trivial_hash(wchar_t);
_TR1_hashtable_define_trivial_hash(short);
_TR1_hashtable_define_trivial_hash(int);
_TR1_hashtable_define_trivial_hash(long);
_TR1_hashtable_define_trivial_hash(long long);
_TR1_hashtable_define_trivial_hash(unsigned short);
_TR1_hashtable_define_trivial_hash(unsigned int);
_TR1_hashtable_define_trivial_hash(unsigned long);
_TR1_hashtable_define_trivial_hash(unsigned long long);
#undef _TR1_hashtable_define_trivial_hash
template<typename _Tp>
struct hash<_Tp*>
: public std::unary_function<_Tp*, std::size_t>
{
std::size_t
operator()(_Tp* __p) const
{ return reinterpret_cast<std::size_t>(__p); }
};
// Fowler / Noll / Vo (FNV) Hash (type FNV-1a)
// (used by the next specializations of std::tr1::hash<>)
// Dummy generic implementation (for sizeof(size_t) != 4, 8).
template<std::size_t = sizeof(std::size_t)>
struct _Fnv_hash
{
static std::size_t
hash(const char* __first, std::size_t __length)
{
std::size_t __result = 0;
for (; __length > 0; --__length)
__result = (__result * 131) + *__first++;
return __result;
}
};
template<>
struct _Fnv_hash<4>
{
static std::size_t
hash(const char* __first, std::size_t __length)
{
std::size_t __result = static_cast<std::size_t>(2166136261UL);
for (; __length > 0; --__length)
{
__result ^= (std::size_t)*__first++;
__result *= 16777619UL;
}
return __result;
}
};
template<>
struct _Fnv_hash<8>
{
static std::size_t
hash(const char* __first, std::size_t __length)
{
std::size_t __result =
static_cast<std::size_t>(14695981039346656037ULL);
for (; __length > 0; --__length)
{
__result ^= (std::size_t)*__first++;
__result *= 1099511628211ULL;
}
return __result;
}
};
// XXX String and floating point hashes probably shouldn't be inline
// member functions, since are nontrivial. Once we have the framework
// for TR1 .cc files, these should go in one.
template<>
struct hash<std::string>
: public std::unary_function<std::string, std::size_t>
{
std::size_t
operator()(const std::string& __s) const
{ return _Fnv_hash<>::hash(__s.data(), __s.length()); }
};
#ifdef _GLIBCXX_USE_WCHAR_T
template<>
struct hash<std::wstring>
: public std::unary_function<std::wstring, std::size_t>
{
std::size_t
operator()(const std::wstring& __s) const
{
return _Fnv_hash<>::hash(reinterpret_cast<const char*>(__s.data()),
__s.length() * sizeof(wchar_t));
}
};
#endif
template<>
struct hash<float>
: public std::unary_function<float, std::size_t>
{
std::size_t
operator()(float __fval) const
{
std::size_t __result = 0;
// 0 and -0 both hash to zero.
if (__fval != 0.0f)
__result = _Fnv_hash<>::hash(reinterpret_cast<const char*>(&__fval),
sizeof(__fval));
return __result;
}
};
template<>
struct hash<double>
: public std::unary_function<double, std::size_t>
{
std::size_t
operator()(double __dval) const
{
std::size_t __result = 0;
// 0 and -0 both hash to zero.
if (__dval != 0.0)
__result = _Fnv_hash<>::hash(reinterpret_cast<const char*>(&__dval),
sizeof(__dval));
return __result;
}
};
// For long double, careful with random padding bits (e.g., on x86,
// 10 bytes -> 12 bytes) and resort to frexp.
template<>
struct hash<long double>
: public std::unary_function<long double, std::size_t>
{
std::size_t
operator()(long double __ldval) const
{
std::size_t __result = 0;
int __exponent;
__ldval = std::frexp(__ldval, &__exponent);
__ldval = __ldval < 0.0l ? -(__ldval + 0.5l) : __ldval;
const long double __mult =
std::numeric_limits<std::size_t>::max() + 1.0l;
__ldval *= __mult;
// Try to use all the bits of the mantissa (really necessary only
// on 32-bit targets, at least for 80-bit floating point formats).
const std::size_t __hibits = (std::size_t)__ldval;
__ldval = (__ldval - (long double)__hibits) * __mult;
const std::size_t __coeff =
(std::numeric_limits<std::size_t>::max()
/ std::numeric_limits<long double>::max_exponent);
__result = __hibits + (std::size_t)__ldval + __coeff * __exponent;
return __result;
}
};
_GLIBCXX_END_NAMESPACE
}
#include <tr1/functional_hash.h>
#endif

4
libstdc++-v3/include/tr1/unordered_map
View File

@@ -1,6 +1,6 @@
// TR1 unordered_map -*- C++ -*-
// Copyright (C) 2005, 2006 Free Software Foundation, Inc.
// Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
@@ -35,7 +35,7 @@
#define _TR1_UNORDERED_MAP 1
#include <tr1/hashtable>
#include <tr1/functional>
#include <tr1/functional_hash.h>
namespace std
{

4
libstdc++-v3/include/tr1/unordered_set
View File

@@ -1,6 +1,6 @@
// TR1 unordered_set -*- C++ -*-
// Copyright (C) 2005, 2006 Free Software Foundation, Inc.
// Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
@@ -35,7 +35,7 @@
#define _TR1_UNORDERED_SET 1
#include <tr1/hashtable>
#include <tr1/functional>
#include <tr1/functional_hash.h>
namespace std
{

10
libstdc++-v3/include/tr1/utility
View File

@@ -1,6 +1,6 @@
// TR1 utility -*- C++ -*-
// Copyright (C) 2004, 2005, 2006 Free Software Foundation, Inc.
// Copyright (C) 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
@@ -87,13 +87,13 @@ _GLIBCXX_BEGIN_NAMESPACE(tr1)
};
template<int _Int, class _Tp1, class _Tp2>
typename tuple_element<_Int, std::pair<_Tp1, _Tp2> >::type&
get(pair<_Tp1, _Tp2>& __in)
inline typename tuple_element<_Int, std::pair<_Tp1, _Tp2> >::type&
get(std::pair<_Tp1, _Tp2>& __in)
{ return __pair_get<_Int>::__get(__in); }
template<int _Int, class _Tp1, class _Tp2>
const typename tuple_element<_Int, std::pair<_Tp1, _Tp2> >::type&
get(const pair<_Tp1, _Tp2>& __in)
inline const typename tuple_element<_Int, std::pair<_Tp1, _Tp2> >::type&
get(const std::pair<_Tp1, _Tp2>& __in)
{ return __pair_get<_Int>::__const_get(__in); }
_GLIBCXX_END_NAMESPACE