stl_numeric.h (power + helpers, iota): Move to...
2002-01-02 Paolo Carlini <pcarlini@unitus.it>
* include/bits/stl_numeric.h (power + helpers, iota): Move to...
* include/ext/numeric: ...here, new file.
* include/bits/stl_function.h (identity_element, unary_compose,
binary_compose, compose1, compose2, identity, select1st,
select2nd, project1st + helper, project2nd + helper,
constant_void_fun + helper, constant_unary_fun + helper,
costant_binary_fun + helper, constant0, constant1, constant2,
subtractive_rng, mem_fun1, mem_fun1_ref): Move to...
* include/ext/functional: ...here, new file.
* include/Makefile.am (ext_headers): Add new files.
* include/Makefile.in: Regenerate.
* testsuite/ext/headers.cc: Include <ext/numeric> and
<ext/functional>.
* include/backward/algo.h: Include <ext/numeric>, tweak.
* include/backward/function.h: Include <ext/functional>, tweak.
* include/ext/ropeimpl.h: Include <ext/numeric>.
From-SVN: r48519
2002-01-03 20:02:18 +01:00
|
|
|
// Functional extensions -*- C++ -*-
|
|
|
|
|
|
|
|
// Copyright (C) 2002 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 2, 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.
|
|
|
|
|
|
|
|
// You should have received a copy of the GNU General Public License along
|
|
|
|
// with this library; see the file COPYING. If not, write to the Free
|
|
|
|
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
|
|
|
|
// USA.
|
|
|
|
|
|
|
|
// As a special exception, you may use this file as part of a free software
|
|
|
|
// library without restriction. Specifically, if other files instantiate
|
|
|
|
// templates or use macros or inline functions from this file, or you compile
|
|
|
|
// this file and link it with other files to produce an executable, this
|
|
|
|
// file does not by itself cause the resulting executable to be covered by
|
|
|
|
// the GNU General Public License. This exception does not however
|
|
|
|
// invalidate any other reasons why the executable file might be covered by
|
|
|
|
// the GNU General Public License.
|
|
|
|
|
|
|
|
/*
|
|
|
|
*
|
|
|
|
* Copyright (c) 1994
|
|
|
|
* Hewlett-Packard Company
|
|
|
|
*
|
|
|
|
* Permission to use, copy, modify, distribute and sell this software
|
|
|
|
* and its documentation for any purpose is hereby granted without fee,
|
|
|
|
* provided that the above copyright notice appear in all copies and
|
|
|
|
* that both that copyright notice and this permission notice appear
|
|
|
|
* in supporting documentation. Hewlett-Packard Company makes no
|
|
|
|
* representations about the suitability of this software for any
|
|
|
|
* purpose. It is provided "as is" without express or implied warranty.
|
|
|
|
*
|
|
|
|
*
|
|
|
|
* Copyright (c) 1996
|
|
|
|
* Silicon Graphics Computer Systems, Inc.
|
|
|
|
*
|
|
|
|
* Permission to use, copy, modify, distribute and sell this software
|
|
|
|
* and its documentation for any purpose is hereby granted without fee,
|
|
|
|
* provided that the above copyright notice appear in all copies and
|
|
|
|
* that both that copyright notice and this permission notice appear
|
|
|
|
* in supporting documentation. Silicon Graphics makes no
|
|
|
|
* representations about the suitability of this software for any
|
|
|
|
* purpose. It is provided "as is" without express or implied warranty.
|
|
|
|
*/
|
|
|
|
|
Makefile.am (doxygen, [...]): Tweak targets.
2002-01-28 Phil Edwards <pme@gcc.gnu.org>
* Makefile.am (doxygen, doxygen-maint, doxygen-man): Tweak targets.
* Makefile.in: Regenerate.
* docs/doxygen/run_doxygen: Update, mostly for man pages.
* docs/doxygen/Intro.3: Update.
* docs/doxygen/TODO: Update.
* docs/doxygen/doxygroups.cc: Add namespace hook for __gnu_cxx.
* docs/doxygen/mainpage.doxy: Update.
* docs/doxygen/user.cfg.in: Update for header rename. Also
regenerate comments and variables with 1.2.12.
* docs/doxygen/maint.cfg.in: Remove file.
* include/bits/stl_relops.h: Doxygenate.
* include/bits/stl_tempbuf.h (std::_Temporary_buffer): Likewise.
* include/c_std/std_cassert.h, include/c_std/std_cctype.h,
include/c_std/std_cerrno.h, include/c_std/std_cfloat.h,
include/c_std/std_ciso646.h, include/c_std/std_climits.h,
include/c_std/std_clocale.h, include/c_std/std_cmath.h,
include/c_std/std_csetjmp.h, include/c_std/std_csignal.h,
include/c_std/std_cstdarg.h, include/c_std/std_cstddef.h,
include/c_std/std_cstdio.h, include/c_std/std_cstdlib.h,
include/c_std/std_cstring.h, include/c_std/std_ctime.h,
include/c_std/std_cwchar.h, include/c_std/std_cwctype.h,
include/ext/algorithm, include/ext/functional, include/ext/hash_map,
include/ext/hash_set, include/ext/iterator, include/ext/memory,
include/ext/numeric, include/ext/rb_tree, include/ext/rope,
include/ext/ropeimpl.h, include/ext/slist, include/ext/stl_hash_fun.h,
include/ext/stl_hashtable.h, include/ext/stl_rope.h,
include/std/std_algorithm.h, include/std/std_bitset.h,
include/std/std_complex.h, include/std/std_deque.h,
include/std/std_fstream.h, include/std/std_functional.h,
include/std/std_iomanip.h, include/std/std_ios.h,
include/std/std_iosfwd.h, include/std/std_iostream.h,
include/std/std_istream.h, include/std/std_iterator.h,
include/std/std_limits.h, include/std/std_list.h,
include/std/std_locale.h, include/std/std_map.h,
include/std/std_memory.h, include/std/std_numeric.h,
include/std/std_ostream.h, include/std/std_queue.h,
include/std/std_set.h, include/std/std_sstream.h,
include/std/std_stack.h, include/std/std_stdexcept.h,
include/std/std_streambuf.h, include/std/std_string.h,
include/std/std_utility.h, include/std/std_valarray.h,
include/std/std_vector.h: Add/correct @file doxygen hook.
* include/ext/memory: Doxygenate most of rest of file.
* libsupc++/exception: Doxygen output formatting.
* libsupc++/new: Say which header it is.
* testsuite/lib/libstdc++-v3-dg.exp: Fix spacing.
* docs/html/19_diagnostics/howto.html: Describe concept-checks switch.
* docs/html/23_containers/howto.html: Describe O(n) list::size().
* docs/html/27_io/howto.html: Also link to Langer and Kreft text.
From-SVN: r49300
2002-01-28 23:13:12 +01:00
|
|
|
/** @file ext/functional
|
|
|
|
* This file is a GNU extension to the Standard C++ Library (possibly
|
|
|
|
* containing extensions from the HP/SGI STL subset). You should only
|
|
|
|
* include this header if you are using GCC 3 or later.
|
|
|
|
*/
|
|
|
|
|
stl_numeric.h (power + helpers, iota): Move to...
2002-01-02 Paolo Carlini <pcarlini@unitus.it>
* include/bits/stl_numeric.h (power + helpers, iota): Move to...
* include/ext/numeric: ...here, new file.
* include/bits/stl_function.h (identity_element, unary_compose,
binary_compose, compose1, compose2, identity, select1st,
select2nd, project1st + helper, project2nd + helper,
constant_void_fun + helper, constant_unary_fun + helper,
costant_binary_fun + helper, constant0, constant1, constant2,
subtractive_rng, mem_fun1, mem_fun1_ref): Move to...
* include/ext/functional: ...here, new file.
* include/Makefile.am (ext_headers): Add new files.
* include/Makefile.in: Regenerate.
* testsuite/ext/headers.cc: Include <ext/numeric> and
<ext/functional>.
* include/backward/algo.h: Include <ext/numeric>, tweak.
* include/backward/function.h: Include <ext/functional>, tweak.
* include/ext/ropeimpl.h: Include <ext/numeric>.
From-SVN: r48519
2002-01-03 20:02:18 +01:00
|
|
|
#ifndef _EXT_FUNCTIONAL
|
2003-06-06 17:50:28 +02:00
|
|
|
#define _EXT_FUNCTIONAL 1
|
stl_numeric.h (power + helpers, iota): Move to...
2002-01-02 Paolo Carlini <pcarlini@unitus.it>
* include/bits/stl_numeric.h (power + helpers, iota): Move to...
* include/ext/numeric: ...here, new file.
* include/bits/stl_function.h (identity_element, unary_compose,
binary_compose, compose1, compose2, identity, select1st,
select2nd, project1st + helper, project2nd + helper,
constant_void_fun + helper, constant_unary_fun + helper,
costant_binary_fun + helper, constant0, constant1, constant2,
subtractive_rng, mem_fun1, mem_fun1_ref): Move to...
* include/ext/functional: ...here, new file.
* include/Makefile.am (ext_headers): Add new files.
* include/Makefile.in: Regenerate.
* testsuite/ext/headers.cc: Include <ext/numeric> and
<ext/functional>.
* include/backward/algo.h: Include <ext/numeric>, tweak.
* include/backward/function.h: Include <ext/functional>, tweak.
* include/ext/ropeimpl.h: Include <ext/numeric>.
From-SVN: r48519
2002-01-03 20:02:18 +01:00
|
|
|
|
|
|
|
#pragma GCC system_header
|
2003-06-06 17:50:28 +02:00
|
|
|
|
Makefile.am (std_headers): Remove cXXX from list.
2002-01-04 Benjamin Kosnik <bkoz@redhat.com>
* include/Makefile.am (std_headers): Remove cXXX from list.
(c_base_srcdir): No bits subdirectory.
(c_base_builddir): Same.
(c_base_headers): Adjust names, add ciso646.
(bits_headers): Remove std_xxx.h headers.
* include/Makefile.in: Regenerate.
* include/ext/iterator: Adjust includes.
* include/ext/ropeimpl.h: Same.
* include/ext/stl_hash_fun.h: Same.
* include/ext/algorithm: Same.
* include/backward/bvector.h: Adjust includes.
* include/backward/vector.h: Same.
* include/backward/strstream: Same.
* include/backward/streambuf.h: Same.
* include/backward/stack.h: Same.
* include/backward/set.h: Same.
* include/backward/queue.h: Same.
* include/backward/multiset.h: Same.
* include/backward/multimap.h: Same.
* include/backward/map.h: Same.
* include/backward/list.h: Same.
* include/backward/iterator.h: Same.
* include/backward/iostream.h: Same.
* include/backward/iomanip.h: Same.
* include/backward/fstream.h: Same.
* include/backward/deque.h: Same.
* include/backward/complex.h: Same.
* include/bits/std_algorithm.h: Move to...
* include/std/algorithm: ...here.
* include/bits/std_iosfwd.h, std_locale.h, std_stack.h,
std_bitset.h, std_ios.h, std_map.h, std_stdexcept.h,
std_complex.h, std_iostream.h, std_memory.h, std_streambuf.h,
std_deque.h, std_istream.h, std_numeric.h, std_string.h,
std_fstream.h, std_ostream.h, std_utility.h, std_iterator.h,
std_queue.h, std_valarray.h, std_functional.h, std_limits.h,
std_set.h, std_vector.h, std_iomanip.h, std_list.h, std_sstream.h:
Same.
* include/c_std/bits/std_cassert.h: Move to...
* include/c_std/cassert: Here.
* include/c_std/std_cctype.h, std_cerrno.h, std_cfloat.h,
std_climits.h, std_clocale.h, std_cmath.h, std_csetjmp.h,
std_csignal.h, std_cstdarg.h, std_cstddef.h, std_cstdio.h,
std_cstdlib.h, std_cstring.h, std_ctime.h, std_cwchar.h,
std_cwctype.h: Same.
* include/c_std/cmath: Adjust cmath.tcc include.
* include/c_std/cstdlib: Adjust includes.
* include/c_std/cwchar: Same.
* include/c_std/ctime: Same.
* include/c_std/cstring: Same.
* include/c_std/cstdio: Same.
* include/c_std/bits: Remove directory.
* include/c/bits/std_cassert.h: Move to...
* include/c/cassert: Here.
* include/c/std_cctype.h, std_cerrno.h, std_cfloat.h,
std_climits.h, std_clocale.h, std_cmath.h, std_csetjmp.h,
std_csignal.h, std_cstdarg.h, std_cstddef.h, std_cstdio.h,
std_cstdlib.h, std_cstring.h, std_ctime.h, std_cwchar.h,
std_cwctype.h: Same.
* include/c/bits: Remove directory.
* include/std/cwctype: Remove.
* include/std/cwchar: Remove.
* include/std/ctime: Remove.
* include/std/cstring: Remove.
* include/std/cstdlib: Remove.
* include/std/cstdio: Remove.
* include/std/cstddef: Remove.
* include/std/cstdarg: Remove.
* include/std/csignal: Remove.
* include/std/csetjmp: Remove.
* include/std/cmath: Remove.
* include/std/clocale: Remove.
* include/std/climits: Remove.
* include/std/ciso646: Remove.
* include/std/cfloat: Remove.
* include/std/cerrno: Remove.
* include/std/cctype: Remove.
* include/std/cassert: Remove.
* include/bits/fpos.h: Adjust includes, removing <bits/std_xxx.h>
files and subsituting <.xxx>
* include/bits/valarray_array.h: Same.
* include/bits/stl_uninitialized.h: Same.
* include/bits/stl_alloc.h: Same.
* include/bits/stl_algobase.h: Same.
* include/bits/sstream.tcc: Same.
* include/bits/pthread_allocimpl.h: Same.
* include/bits/ostream.tcc: Same.
* include/bits/localefwd.h: Same.
* include/bits/locale_facets.tcc: Same.
* include/bits/locale_facets.h: Same.
* include/bits/istream.tcc: Same.
* include/bits/char_traits.h: Same.
* include/bits/boost_concept_check.h: Same.
* include/bits/basic_file.h: Same.
* include/std/bitset: Same.
* include/std/complex: Same.
* include/std/fstream: Same.
* include/std/functional: Same.
* include/std/ios: Same.
* include/std/iostream: Same.
* include/std/ostream: Same.
* include/std/sstream: Same.
* include/std/streambuf: Same.
* include/std/string: Same.
* include/std/iterator: Same.
* include/std/valarray: Same.
* src/ios.cc: Adjust includes.
* src/valarray-inst.cc: Same.
* src/string-inst.cc: Same.
* src/stl-inst.cc: Same.
* src/stdexcept.cc: Same.
* src/misc-inst.cc: Same.
* src/localename.cc: Same.
* src/locale-inst.cc: Same.
* src/locale.cc: Same.
* src/limits.cc: Same.
* src/concept-inst.cc: Same.
* src/complex_io.cc: Same.
* src/codecvt.cc: Same.
* src/bitset.cc: Same.
* src/cmath.cc: Same.
From-SVN: r48544
2002-01-04 22:27:36 +01:00
|
|
|
#include <functional>
|
stl_numeric.h (power + helpers, iota): Move to...
2002-01-02 Paolo Carlini <pcarlini@unitus.it>
* include/bits/stl_numeric.h (power + helpers, iota): Move to...
* include/ext/numeric: ...here, new file.
* include/bits/stl_function.h (identity_element, unary_compose,
binary_compose, compose1, compose2, identity, select1st,
select2nd, project1st + helper, project2nd + helper,
constant_void_fun + helper, constant_unary_fun + helper,
costant_binary_fun + helper, constant0, constant1, constant2,
subtractive_rng, mem_fun1, mem_fun1_ref): Move to...
* include/ext/functional: ...here, new file.
* include/Makefile.am (ext_headers): Add new files.
* include/Makefile.in: Regenerate.
* testsuite/ext/headers.cc: Include <ext/numeric> and
<ext/functional>.
* include/backward/algo.h: Include <ext/numeric>, tweak.
* include/backward/function.h: Include <ext/functional>, tweak.
* include/ext/ropeimpl.h: Include <ext/numeric>.
From-SVN: r48519
2002-01-03 20:02:18 +01:00
|
|
|
|
|
|
|
namespace __gnu_cxx
|
|
|
|
{
|
|
|
|
using std::unary_function;
|
|
|
|
using std::binary_function;
|
|
|
|
using std::mem_fun1_t;
|
|
|
|
using std::const_mem_fun1_t;
|
|
|
|
using std::mem_fun1_ref_t;
|
|
|
|
using std::const_mem_fun1_ref_t;
|
|
|
|
|
|
|
|
/** The @c identity_element functions are not part of the C++ standard; SGI
|
|
|
|
* provided them as an extension. Its argument is an operation, and its
|
|
|
|
* return value is the identity element for that operation. It is overloaded
|
|
|
|
* for addition and multiplication, and you can overload it for your own
|
|
|
|
* nefarious operations.
|
|
|
|
*
|
|
|
|
* @addtogroup SGIextensions
|
|
|
|
* @{
|
|
|
|
*/
|
|
|
|
/// An \link SGIextensions SGI extension \endlink.
|
|
|
|
template <class _Tp> inline _Tp identity_element(std::plus<_Tp>) {
|
|
|
|
return _Tp(0);
|
|
|
|
}
|
|
|
|
/// An \link SGIextensions SGI extension \endlink.
|
|
|
|
template <class _Tp> inline _Tp identity_element(std::multiplies<_Tp>) {
|
|
|
|
return _Tp(1);
|
|
|
|
}
|
|
|
|
/** @} */
|
|
|
|
|
|
|
|
/** As an extension to the binders, SGI provided composition functors and
|
|
|
|
* wrapper functions to aid in their creation. The @c unary_compose
|
|
|
|
* functor is constructed from two functions/functors, @c f and @c g.
|
|
|
|
* Calling @c operator() with a single argument @c x returns @c f(g(x)).
|
|
|
|
* The function @c compose1 takes the two functions and constructs a
|
|
|
|
* @c unary_compose variable for you.
|
|
|
|
*
|
|
|
|
* @c binary_compose is constructed from three functors, @c f, @c g1,
|
|
|
|
* and @c g2. Its @c operator() returns @c f(g1(x),g2(x)). The function
|
|
|
|
* @compose2 takes f, g1, and g2, and constructs the @c binary_compose
|
|
|
|
* instance for you. For example, if @c f returns an int, then
|
|
|
|
* \code
|
|
|
|
* int answer = (compose2(f,g1,g2))(x);
|
|
|
|
* \endcode
|
|
|
|
* is equivalent to
|
|
|
|
* \code
|
|
|
|
* int temp1 = g1(x);
|
|
|
|
* int temp2 = g2(x);
|
|
|
|
* int answer = f(temp1,temp2);
|
|
|
|
* \endcode
|
|
|
|
* But the first form is more compact, and can be passed around as a
|
|
|
|
* functor to other algorithms.
|
|
|
|
*
|
|
|
|
* @addtogroup SGIextensions
|
|
|
|
* @{
|
|
|
|
*/
|
|
|
|
/// An \link SGIextensions SGI extension \endlink.
|
|
|
|
template <class _Operation1, class _Operation2>
|
|
|
|
class unary_compose
|
|
|
|
: public unary_function<typename _Operation2::argument_type,
|
|
|
|
typename _Operation1::result_type>
|
|
|
|
{
|
|
|
|
protected:
|
|
|
|
_Operation1 _M_fn1;
|
|
|
|
_Operation2 _M_fn2;
|
|
|
|
public:
|
|
|
|
unary_compose(const _Operation1& __x, const _Operation2& __y)
|
|
|
|
: _M_fn1(__x), _M_fn2(__y) {}
|
|
|
|
typename _Operation1::result_type
|
|
|
|
operator()(const typename _Operation2::argument_type& __x) const {
|
|
|
|
return _M_fn1(_M_fn2(__x));
|
|
|
|
}
|
|
|
|
};
|
|
|
|
|
|
|
|
/// An \link SGIextensions SGI extension \endlink.
|
|
|
|
template <class _Operation1, class _Operation2>
|
|
|
|
inline unary_compose<_Operation1,_Operation2>
|
|
|
|
compose1(const _Operation1& __fn1, const _Operation2& __fn2)
|
|
|
|
{
|
|
|
|
return unary_compose<_Operation1,_Operation2>(__fn1, __fn2);
|
|
|
|
}
|
|
|
|
|
|
|
|
/// An \link SGIextensions SGI extension \endlink.
|
|
|
|
template <class _Operation1, class _Operation2, class _Operation3>
|
|
|
|
class binary_compose
|
|
|
|
: public unary_function<typename _Operation2::argument_type,
|
|
|
|
typename _Operation1::result_type> {
|
|
|
|
protected:
|
|
|
|
_Operation1 _M_fn1;
|
|
|
|
_Operation2 _M_fn2;
|
|
|
|
_Operation3 _M_fn3;
|
|
|
|
public:
|
|
|
|
binary_compose(const _Operation1& __x, const _Operation2& __y,
|
|
|
|
const _Operation3& __z)
|
|
|
|
: _M_fn1(__x), _M_fn2(__y), _M_fn3(__z) { }
|
|
|
|
typename _Operation1::result_type
|
|
|
|
operator()(const typename _Operation2::argument_type& __x) const {
|
|
|
|
return _M_fn1(_M_fn2(__x), _M_fn3(__x));
|
|
|
|
}
|
|
|
|
};
|
|
|
|
|
|
|
|
/// An \link SGIextensions SGI extension \endlink.
|
|
|
|
template <class _Operation1, class _Operation2, class _Operation3>
|
|
|
|
inline binary_compose<_Operation1, _Operation2, _Operation3>
|
|
|
|
compose2(const _Operation1& __fn1, const _Operation2& __fn2,
|
|
|
|
const _Operation3& __fn3)
|
|
|
|
{
|
|
|
|
return binary_compose<_Operation1,_Operation2,_Operation3>
|
|
|
|
(__fn1, __fn2, __fn3);
|
|
|
|
}
|
|
|
|
/** @} */
|
|
|
|
|
|
|
|
/** As an extension, SGI provided a functor called @c identity. When a
|
|
|
|
* functor is required but no operations are desired, this can be used as a
|
|
|
|
* pass-through. Its @c operator() returns its argument unchanged.
|
|
|
|
*
|
|
|
|
* @addtogroup SGIextensions
|
|
|
|
*/
|
|
|
|
template <class _Tp> struct identity : public std::_Identity<_Tp> {};
|
|
|
|
|
|
|
|
/** @c select1st and @c select2nd are extensions provided by SGI. Their
|
|
|
|
* @c operator()s
|
|
|
|
* take a @c std::pair as an argument, and return either the first member
|
|
|
|
* or the second member, respectively. They can be used (especially with
|
|
|
|
* the composition functors) to "strip" data from a sequence before
|
|
|
|
* performing the remainder of an algorithm.
|
|
|
|
*
|
|
|
|
* @addtogroup SGIextensions
|
|
|
|
* @{
|
|
|
|
*/
|
|
|
|
/// An \link SGIextensions SGI extension \endlink.
|
|
|
|
template <class _Pair> struct select1st : public std::_Select1st<_Pair> {};
|
|
|
|
/// An \link SGIextensions SGI extension \endlink.
|
|
|
|
template <class _Pair> struct select2nd : public std::_Select2nd<_Pair> {};
|
|
|
|
/** @} */
|
|
|
|
|
|
|
|
// extension documented next
|
|
|
|
template <class _Arg1, class _Arg2>
|
|
|
|
struct _Project1st : public binary_function<_Arg1, _Arg2, _Arg1> {
|
|
|
|
_Arg1 operator()(const _Arg1& __x, const _Arg2&) const { return __x; }
|
|
|
|
};
|
|
|
|
|
|
|
|
template <class _Arg1, class _Arg2>
|
|
|
|
struct _Project2nd : public binary_function<_Arg1, _Arg2, _Arg2> {
|
|
|
|
_Arg2 operator()(const _Arg1&, const _Arg2& __y) const { return __y; }
|
|
|
|
};
|
|
|
|
|
|
|
|
/** The @c operator() of the @c project1st functor takes two arbitrary
|
|
|
|
* arguments and returns the first one, while @c project2nd returns the
|
|
|
|
* second one. They are extensions provided by SGI.
|
|
|
|
*
|
|
|
|
* @addtogroup SGIextensions
|
|
|
|
* @{
|
|
|
|
*/
|
|
|
|
|
|
|
|
/// An \link SGIextensions SGI extension \endlink.
|
|
|
|
template <class _Arg1, class _Arg2>
|
|
|
|
struct project1st : public _Project1st<_Arg1, _Arg2> {};
|
|
|
|
|
|
|
|
/// An \link SGIextensions SGI extension \endlink.
|
|
|
|
template <class _Arg1, class _Arg2>
|
|
|
|
struct project2nd : public _Project2nd<_Arg1, _Arg2> {};
|
|
|
|
/** @} */
|
|
|
|
|
|
|
|
// extension documented next
|
|
|
|
template <class _Result>
|
|
|
|
struct _Constant_void_fun {
|
|
|
|
typedef _Result result_type;
|
|
|
|
result_type _M_val;
|
|
|
|
|
|
|
|
_Constant_void_fun(const result_type& __v) : _M_val(__v) {}
|
|
|
|
const result_type& operator()() const { return _M_val; }
|
|
|
|
};
|
|
|
|
|
|
|
|
template <class _Result, class _Argument>
|
|
|
|
struct _Constant_unary_fun {
|
|
|
|
typedef _Argument argument_type;
|
|
|
|
typedef _Result result_type;
|
|
|
|
result_type _M_val;
|
|
|
|
|
|
|
|
_Constant_unary_fun(const result_type& __v) : _M_val(__v) {}
|
|
|
|
const result_type& operator()(const _Argument&) const { return _M_val; }
|
|
|
|
};
|
|
|
|
|
|
|
|
template <class _Result, class _Arg1, class _Arg2>
|
|
|
|
struct _Constant_binary_fun {
|
|
|
|
typedef _Arg1 first_argument_type;
|
|
|
|
typedef _Arg2 second_argument_type;
|
|
|
|
typedef _Result result_type;
|
|
|
|
_Result _M_val;
|
|
|
|
|
|
|
|
_Constant_binary_fun(const _Result& __v) : _M_val(__v) {}
|
|
|
|
const result_type& operator()(const _Arg1&, const _Arg2&) const {
|
|
|
|
return _M_val;
|
|
|
|
}
|
|
|
|
};
|
|
|
|
|
|
|
|
/** These three functors are each constructed from a single arbitrary
|
|
|
|
* variable/value. Later, their @c operator()s completely ignore any
|
|
|
|
* arguments passed, and return the stored value.
|
|
|
|
* - @c constant_void_fun's @c operator() takes no arguments
|
|
|
|
* - @c constant_unary_fun's @c operator() takes one argument (ignored)
|
|
|
|
* - @c constant_binary_fun's @c operator() takes two arguments (ignored)
|
|
|
|
*
|
|
|
|
* The helper creator functions @c constant0, @c constant1, and
|
|
|
|
* @c constant2 each take a "result" argument and construct variables of
|
|
|
|
* the appropriate functor type.
|
|
|
|
*
|
|
|
|
* @addtogroup SGIextensions
|
|
|
|
* @{
|
|
|
|
*/
|
|
|
|
/// An \link SGIextensions SGI extension \endlink.
|
|
|
|
template <class _Result>
|
|
|
|
struct constant_void_fun : public _Constant_void_fun<_Result> {
|
|
|
|
constant_void_fun(const _Result& __v) : _Constant_void_fun<_Result>(__v) {}
|
|
|
|
};
|
|
|
|
|
|
|
|
/// An \link SGIextensions SGI extension \endlink.
|
|
|
|
template <class _Result,
|
|
|
|
class _Argument = _Result>
|
|
|
|
struct constant_unary_fun : public _Constant_unary_fun<_Result, _Argument>
|
|
|
|
{
|
|
|
|
constant_unary_fun(const _Result& __v)
|
|
|
|
: _Constant_unary_fun<_Result, _Argument>(__v) {}
|
|
|
|
};
|
|
|
|
|
|
|
|
/// An \link SGIextensions SGI extension \endlink.
|
|
|
|
template <class _Result,
|
|
|
|
class _Arg1 = _Result,
|
|
|
|
class _Arg2 = _Arg1>
|
|
|
|
struct constant_binary_fun
|
|
|
|
: public _Constant_binary_fun<_Result, _Arg1, _Arg2>
|
|
|
|
{
|
|
|
|
constant_binary_fun(const _Result& __v)
|
|
|
|
: _Constant_binary_fun<_Result, _Arg1, _Arg2>(__v) {}
|
|
|
|
};
|
|
|
|
|
|
|
|
/// An \link SGIextensions SGI extension \endlink.
|
|
|
|
template <class _Result>
|
|
|
|
inline constant_void_fun<_Result> constant0(const _Result& __val)
|
|
|
|
{
|
|
|
|
return constant_void_fun<_Result>(__val);
|
|
|
|
}
|
|
|
|
|
|
|
|
/// An \link SGIextensions SGI extension \endlink.
|
|
|
|
template <class _Result>
|
|
|
|
inline constant_unary_fun<_Result,_Result> constant1(const _Result& __val)
|
|
|
|
{
|
|
|
|
return constant_unary_fun<_Result,_Result>(__val);
|
|
|
|
}
|
|
|
|
|
|
|
|
/// An \link SGIextensions SGI extension \endlink.
|
|
|
|
template <class _Result>
|
|
|
|
inline constant_binary_fun<_Result,_Result,_Result>
|
|
|
|
constant2(const _Result& __val)
|
|
|
|
{
|
|
|
|
return constant_binary_fun<_Result,_Result,_Result>(__val);
|
|
|
|
}
|
|
|
|
/** @} */
|
|
|
|
|
|
|
|
/** The @c subtractive_rng class is documented on
|
|
|
|
* <a href="http://www.sgi.com/tech/stl/">SGI's site</a>.
|
|
|
|
* Note that this code assumes that @c int is 32 bits.
|
|
|
|
*
|
|
|
|
* @ingroup SGIextensions
|
|
|
|
*/
|
|
|
|
class subtractive_rng : public unary_function<unsigned int, unsigned int> {
|
|
|
|
private:
|
|
|
|
unsigned int _M_table[55];
|
|
|
|
size_t _M_index1;
|
|
|
|
size_t _M_index2;
|
|
|
|
public:
|
|
|
|
/// Returns a number less than the argument.
|
|
|
|
unsigned int operator()(unsigned int __limit) {
|
|
|
|
_M_index1 = (_M_index1 + 1) % 55;
|
|
|
|
_M_index2 = (_M_index2 + 1) % 55;
|
|
|
|
_M_table[_M_index1] = _M_table[_M_index1] - _M_table[_M_index2];
|
|
|
|
return _M_table[_M_index1] % __limit;
|
|
|
|
}
|
|
|
|
|
|
|
|
void _M_initialize(unsigned int __seed)
|
|
|
|
{
|
|
|
|
unsigned int __k = 1;
|
|
|
|
_M_table[54] = __seed;
|
|
|
|
size_t __i;
|
|
|
|
for (__i = 0; __i < 54; __i++) {
|
|
|
|
size_t __ii = (21 * (__i + 1) % 55) - 1;
|
|
|
|
_M_table[__ii] = __k;
|
|
|
|
__k = __seed - __k;
|
|
|
|
__seed = _M_table[__ii];
|
|
|
|
}
|
|
|
|
for (int __loop = 0; __loop < 4; __loop++) {
|
|
|
|
for (__i = 0; __i < 55; __i++)
|
|
|
|
_M_table[__i] = _M_table[__i] - _M_table[(1 + __i + 30) % 55];
|
|
|
|
}
|
|
|
|
_M_index1 = 0;
|
|
|
|
_M_index2 = 31;
|
|
|
|
}
|
|
|
|
|
|
|
|
/// Ctor allowing you to initialize the seed.
|
|
|
|
subtractive_rng(unsigned int __seed) { _M_initialize(__seed); }
|
|
|
|
/// Default ctor; initializes its state with some number you don't see.
|
|
|
|
subtractive_rng() { _M_initialize(161803398u); }
|
|
|
|
};
|
|
|
|
|
|
|
|
// Mem_fun adaptor helper functions mem_fun1 and mem_fun1_ref,
|
|
|
|
// provided for backward compatibility, they are no longer part of
|
|
|
|
// the C++ standard.
|
|
|
|
|
|
|
|
template <class _Ret, class _Tp, class _Arg>
|
|
|
|
inline mem_fun1_t<_Ret,_Tp,_Arg> mem_fun1(_Ret (_Tp::*__f)(_Arg))
|
|
|
|
{ return mem_fun1_t<_Ret,_Tp,_Arg>(__f); }
|
|
|
|
|
|
|
|
template <class _Ret, class _Tp, class _Arg>
|
|
|
|
inline const_mem_fun1_t<_Ret,_Tp,_Arg> mem_fun1(_Ret (_Tp::*__f)(_Arg) const)
|
|
|
|
{ return const_mem_fun1_t<_Ret,_Tp,_Arg>(__f); }
|
|
|
|
|
|
|
|
template <class _Ret, class _Tp, class _Arg>
|
|
|
|
inline mem_fun1_ref_t<_Ret,_Tp,_Arg> mem_fun1_ref(_Ret (_Tp::*__f)(_Arg))
|
|
|
|
{ return mem_fun1_ref_t<_Ret,_Tp,_Arg>(__f); }
|
|
|
|
|
|
|
|
template <class _Ret, class _Tp, class _Arg>
|
|
|
|
inline const_mem_fun1_ref_t<_Ret,_Tp,_Arg>
|
|
|
|
mem_fun1_ref(_Ret (_Tp::*__f)(_Arg) const)
|
|
|
|
{ return const_mem_fun1_ref_t<_Ret,_Tp,_Arg>(__f); }
|
|
|
|
} // namespace __gnu_cxx
|
|
|
|
|
2003-06-06 17:50:28 +02:00
|
|
|
#endif
|
stl_numeric.h (power + helpers, iota): Move to...
2002-01-02 Paolo Carlini <pcarlini@unitus.it>
* include/bits/stl_numeric.h (power + helpers, iota): Move to...
* include/ext/numeric: ...here, new file.
* include/bits/stl_function.h (identity_element, unary_compose,
binary_compose, compose1, compose2, identity, select1st,
select2nd, project1st + helper, project2nd + helper,
constant_void_fun + helper, constant_unary_fun + helper,
costant_binary_fun + helper, constant0, constant1, constant2,
subtractive_rng, mem_fun1, mem_fun1_ref): Move to...
* include/ext/functional: ...here, new file.
* include/Makefile.am (ext_headers): Add new files.
* include/Makefile.in: Regenerate.
* testsuite/ext/headers.cc: Include <ext/numeric> and
<ext/functional>.
* include/backward/algo.h: Include <ext/numeric>, tweak.
* include/backward/function.h: Include <ext/functional>, tweak.
* include/ext/ropeimpl.h: Include <ext/numeric>.
From-SVN: r48519
2002-01-03 20:02:18 +01:00
|
|
|
|