diff options
author | paolo <paolo@138bc75d-0d04-0410-961f-82ee72b054a4> | 2010-02-22 22:54:49 +0000 |
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committer | paolo <paolo@138bc75d-0d04-0410-961f-82ee72b054a4> | 2010-02-22 22:54:49 +0000 |
commit | 9fd86bdfec9091d8286b817379ca3e46efe98806 (patch) | |
tree | 202225fd61afbf03bfc857ac7b7be1ca34214e35 /libstdc++-v3 | |
parent | e759020a241c1fcd30759e4e50156104fb166abf (diff) | |
download | gcc-9fd86bdfec9091d8286b817379ca3e46efe98806.tar.gz |
2010-02-22 Paolo Carlini <paolo.carlini@oracle.com>
* src/hash-aux.cc: Rename to...
* src/hash-string-aux.cc: ... this.
* src/hash-long-double-aux.cc: New.
* src/hash_c++0x.cc: Adjust.
* src/hash_tr1.cc: Likewise.
* src/compatibility-c++0x.cc: Likewise.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@156981 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'libstdc++-v3')
-rw-r--r-- | libstdc++-v3/ChangeLog | 9 | ||||
-rw-r--r-- | libstdc++-v3/src/compatibility-c++0x.cc | 2 | ||||
-rw-r--r-- | libstdc++-v3/src/hash-long-double-aux.cc | 50 | ||||
-rw-r--r-- | libstdc++-v3/src/hash-string-aux.cc (renamed from libstdc++-v3/src/hash-aux.cc) | 2 | ||||
-rw-r--r-- | libstdc++-v3/src/hash_c++0x.cc | 26 | ||||
-rw-r--r-- | libstdc++-v3/src/hash_tr1.cc | 30 |
6 files changed, 64 insertions, 55 deletions
diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog index 15f1ff8d7aa..c32971f1ff4 100644 --- a/libstdc++-v3/ChangeLog +++ b/libstdc++-v3/ChangeLog @@ -1,3 +1,12 @@ +2010-02-22 Paolo Carlini <paolo.carlini@oracle.com> + + * src/hash-aux.cc: Rename to... + * src/hash-string-aux.cc: ... this. + * src/hash-long-double-aux.cc: New. + * src/hash_c++0x.cc: Adjust. + * src/hash_tr1.cc: Likewise. + * src/compatibility-c++0x.cc: Likewise. + 2010-02-22 Benjamin Kosnik <bkoz@redhat.com> * doc/xml/class.txml: Adjust biblio markup. diff --git a/libstdc++-v3/src/compatibility-c++0x.cc b/libstdc++-v3/src/compatibility-c++0x.cc index 75df7497a40..abdc72c0832 100644 --- a/libstdc++-v3/src/compatibility-c++0x.cc +++ b/libstdc++-v3/src/compatibility-c++0x.cc @@ -50,7 +50,7 @@ namespace std // We need these due to the symbols exported since GLIBCXX_3.4.10. // See libstdc++/41662 for details. -#include "hash-aux.cc" +#include "hash-string-aux.cc" template<> size_t diff --git a/libstdc++-v3/src/hash-long-double-aux.cc b/libstdc++-v3/src/hash-long-double-aux.cc new file mode 100644 index 00000000000..5b8bbfdd49d --- /dev/null +++ b/libstdc++-v3/src/hash-long-double-aux.cc @@ -0,0 +1,50 @@ +// std::hash and std::tr1::hash definitions, long double bits -*- C++ -*- + +// Copyright (C) 2010 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 +// terms of the GNU General Public License as published by the +// Free Software Foundation; either version 3, or (at your option) +// any later version. + +// This library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. + +// Under Section 7 of GPL version 3, you are granted additional +// permissions described in the GCC Runtime Library Exception, version +// 3.1, as published by the Free Software Foundation. + +// You should have received a copy of the GNU General Public License and +// a copy of the GCC Runtime Library Exception along with this program; +// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +// <http://www.gnu.org/licenses/>. + + // For long double, careful with random padding bits (e.g., on x86, + // 10 bytes -> 12 bytes) and resort to frexp. + template<> + size_t + hash<long double>::operator()(long double __val) const + { + size_t __result = 0; + + int __exponent; + __val = __builtin_frexpl(__val, &__exponent); + __val = __val < 0.0l ? -(__val + 0.5l) : __val; + + const long double __mult = __SIZE_MAX__ + 1.0l; + __val *= __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 size_t __hibits = (size_t)__val; + __val = (__val - (long double)__hibits) * __mult; + + const size_t __coeff = __SIZE_MAX__ / __LDBL_MAX_EXP__; + + __result = __hibits + (size_t)__val + __coeff * __exponent; + + return __result; + } diff --git a/libstdc++-v3/src/hash-aux.cc b/libstdc++-v3/src/hash-string-aux.cc index e3f15d78ee3..1da015c1fd5 100644 --- a/libstdc++-v3/src/hash-aux.cc +++ b/libstdc++-v3/src/hash-string-aux.cc @@ -1,4 +1,4 @@ -// std::hash and std::tr1::hash definitions -*- C++ -*- +// std::hash and std::tr1::hash definitions, string bits -*- C++ -*- // Copyright (C) 2007, 2008, 2009, 2010 Free Software Foundation, Inc. // diff --git a/libstdc++-v3/src/hash_c++0x.cc b/libstdc++-v3/src/hash_c++0x.cc index df97dff219f..ba007f84b54 100644 --- a/libstdc++-v3/src/hash_c++0x.cc +++ b/libstdc++-v3/src/hash_c++0x.cc @@ -30,29 +30,5 @@ namespace std { - /// std::hash specialization for long double. - template<> - size_t - hash<long double>::operator()(long double __val) const - { - size_t __result = 0; - - int __exponent; - __val = __builtin_frexpl(__val, &__exponent); - __val = __val < 0.0l ? -(__val + 0.5l) : __val; - - const long double __mult = __SIZE_MAX__ + 1.0l; - __val *= __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 size_t __hibits = (size_t)__val; - __val = (__val - (long double)__hibits) * __mult; - - const size_t __coeff = __SIZE_MAX__ / __LDBL_MAX_EXP__; - - __result = __hibits + (size_t)__val + __coeff * __exponent; - - return __result; - } +#include "hash-long-double-aux.cc" } diff --git a/libstdc++-v3/src/hash_tr1.cc b/libstdc++-v3/src/hash_tr1.cc index ecbb37dcd6e..0dca086b95c 100644 --- a/libstdc++-v3/src/hash_tr1.cc +++ b/libstdc++-v3/src/hash_tr1.cc @@ -29,33 +29,7 @@ namespace std { namespace tr1 { -#include "hash-aux.cc" - - // For long double, careful with random padding bits (e.g., on x86, - // 10 bytes -> 12 bytes) and resort to frexp. - template<> - size_t - hash<long double>::operator()(long double __val) const - { - size_t __result = 0; - - int __exponent; - __val = __builtin_frexpl(__val, &__exponent); - __val = __val < 0.0l ? -(__val + 0.5l) : __val; - - const long double __mult = __SIZE_MAX__ + 1.0l; - __val *= __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 size_t __hibits = (size_t)__val; - __val = (__val - (long double)__hibits) * __mult; - - const size_t __coeff = __SIZE_MAX__ / __LDBL_MAX_EXP__; - - __result = __hibits + (size_t)__val + __coeff * __exponent; - - return __result; - } +#include "hash-long-double-aux.cc" +#include "hash-string-aux.cc" } } |