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stl_algo.h (count returning void, [...]): Move to...

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2001-12-28  Paolo Carlini  <pcarlini@unitus.it>

        * include/bits/stl_algo.h (count returning void,
        count_if returning void, __random_sample, random_sample,
        random_sample_n, __is_heap, is_heap, is_sorted):  Move to...
        * include/ext/algorithm:  ...here, new file.
	* include/Makefile.am (ext_headers):  Add new file.
        * include/Makefile.in:  Regenerate.
	* testsuite/ext/headers.cc:  Include <ext/algorithm>.

From-SVN: r48350
This commit is contained in:
Paolo Carlini 2001-12-28 19:46:54 +01:00 committed by Paolo Carlini
parent 23d1aac4b5
commit 2c1bc4ebc9
6 changed files with 448 additions and 377 deletions
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10
libstdc++-v3/ChangeLog
View File

@ -1,3 +1,13 @@
2001-12-28 Paolo Carlini <pcarlini@unitus.it>
* include/bits/stl_algo.h (count returning void,
count_if returning void, __random_sample, random_sample,
random_sample_n, __is_heap, is_heap, is_sorted): Move to...
* include/ext/algorithm: ...here, new file.
* include/Makefile.am (ext_headers): Add new file.
* include/Makefile.in: Regenerate.
* testsuite/ext/headers.cc: Include <ext/algorithm>.
2001-12-28 Paolo Carlini <pcarlini@unitus.it>
Nathan Myers <ncm@cantrip.org>

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

@ -172,6 +172,7 @@ backward_headers = \
ext_srcdir = ${glibcpp_srcdir}/include/ext
ext_builddir = ./ext
ext_headers = \
${ext_srcdir}/algorithm \
${ext_srcdir}/rope \
${ext_srcdir}/ropeimpl.h \
${ext_srcdir}/stl_rope.h \

183
libstdc++-v3/include/Makefile.in
View File

@ -1,6 +1,7 @@
# Makefile.in generated automatically by automake 1.4-p5 from Makefile.am
# Makefile.in generated automatically by automake 1.5 from Makefile.am.
# Copyright (C) 1994, 1995-8, 1999, 2001 Free Software Foundation, Inc.
# Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
# Free Software Foundation, Inc.
# This Makefile.in is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
@ -10,6 +11,7 @@
# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
# PARTICULAR PURPOSE.
@SET_MAKE@
SHELL = @SHELL@
@ -31,13 +33,9 @@ infodir = @infodir@
mandir = @mandir@
includedir = @includedir@
oldincludedir = /usr/include
DESTDIR =
pkgdatadir = $(datadir)/@PACKAGE@
pkglibdir = $(libdir)/@PACKAGE@
pkgincludedir = $(includedir)/@PACKAGE@
top_builddir = ..
ACLOCAL = @ACLOCAL@
@ -46,11 +44,11 @@ AUTOMAKE = @AUTOMAKE@
AUTOHEADER = @AUTOHEADER@
INSTALL = @INSTALL@
INSTALL_PROGRAM = @INSTALL_PROGRAM@ $(AM_INSTALL_PROGRAM_FLAGS)
INSTALL_PROGRAM = @INSTALL_PROGRAM@
INSTALL_DATA = @INSTALL_DATA@
INSTALL_SCRIPT = @INSTALL_SCRIPT@
INSTALL_HEADER = $(INSTALL_DATA)
transform = @program_transform_name@
NORMAL_INSTALL = :
PRE_INSTALL = :
POST_INSTALL = :
@ -84,7 +82,6 @@ C_INCLUDE_DIR = @C_INCLUDE_DIR@
DATADIRNAME = @DATADIRNAME@
DEBUG_FLAGS = @DEBUG_FLAGS@
DLLTOOL = @DLLTOOL@
EXEEXT = @EXEEXT@
EXTRA_CXX_FLAGS = @EXTRA_CXX_FLAGS@
GCJ = @GCJ@
GCJFLAGS = @GCJFLAGS@
@ -108,7 +105,6 @@ LIBSUPCXX_PICFLAGS = @LIBSUPCXX_PICFLAGS@
LIBTOOL = @LIBTOOL@
LN_S = @LN_S@
MAINT = @MAINT@
MAKEINFO = @MAKEINFO@
MKINSTALLDIRS = @MKINSTALLDIRS@
MSGFMT = @MSGFMT@
OBJDUMP = @OBJDUMP@
@ -146,16 +142,23 @@ libtool_VERSION = @libtool_VERSION@
release_VERSION = @release_VERSION@
toplevel_srcdir = @toplevel_srcdir@
# Cross compiler and multilib support.
CXX = @glibcpp_CXX@
glibcpp_builddir = @glibcpp_builddir@
glibcpp_srcdir = @glibcpp_srcdir@
# Target includes for threads
glibcpp_thread_h = @glibcpp_thread_h@
# One big happy istallation: just copy everything from the build to the
# install tree (except for the build stamps).
gxx_include_dir = @gxx_include_dir@
AUTOMAKE_OPTIONS = 1.3 gnits
MAINT_CHARSET = latin1
mkinstalldirs = $(SHELL) $(toplevel_srcdir)/mkinstalldirs
# Cross compiler and multilib support.
CXX = @glibcpp_CXX@
glibcpp_srcdir = @glibcpp_srcdir@
glibcpp_builddir = @glibcpp_builddir@
bits_srcdir = ${glibcpp_srcdir}/include/bits
bits_builddir = ./bits
bits_headers = \
@ -299,6 +302,7 @@ backward_headers = \
ext_srcdir = ${glibcpp_srcdir}/include/ext
ext_builddir = ./ext
ext_headers = \
${ext_srcdir}/algorithm \
${ext_srcdir}/rope \
${ext_srcdir}/ropeimpl.h \
${ext_srcdir}/stl_rope.h \
@ -408,114 +412,108 @@ thread_headers = \
allstamps = stamp-std stamp-bits stamp-c_base stamp-backward stamp-ext \
stamp-target stamp-thread
# Target includes for threads
glibcpp_thread_h = @glibcpp_thread_h@
uppercase = [ABCDEFGHIJKLMNOPQRSTUVWXYZ_]
subdir = include
CONFIG_HEADER = $(top_builddir)/config.h
CONFIG_CLEAN_FILES =
depcomp =
DIST_SOURCES =
all: all-am
# One big happy istallation: just copy everything from the build to the
# install tree (except for the build stamps).
gxx_include_dir = @gxx_include_dir@
CONFIG_HEADER = ../config.h
CONFIG_CLEAN_FILES =
DIST_COMMON = Makefile.am Makefile.in
DISTFILES = $(DIST_COMMON) $(SOURCES) $(HEADERS) $(TEXINFOS) $(EXTRA_DIST)
TAR = gtar
GZIP_ENV = --best
all: all-redirect
.SUFFIXES:
$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ Makefile.am $(top_srcdir)/configure.in $(ACLOCAL_M4)
cd $(top_srcdir) && $(AUTOMAKE) --cygnus include/Makefile
Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
cd $(top_builddir) \
&& CONFIG_FILES=$(subdir)/$@ CONFIG_HEADERS= $(SHELL) ./config.status
mostlyclean-libtool:
-rm -f *.lo
clean-libtool:
-rm -rf .libs _libs
distclean-libtool:
-rm -f libtool
$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ Makefile.am $(top_srcdir)/configure.in $(ACLOCAL_M4)
cd $(top_srcdir) && \
$(AUTOMAKE) --cygnus include/Makefile
Makefile: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.in $(top_builddir)/config.status
cd $(top_builddir) && \
CONFIG_HEADERS= CONFIG_LINKS= \
CONFIG_FILES=$(subdir)/$@ $(SHELL) ./config.status
uninstall-info-am:
tags: TAGS
TAGS:
distdir = $(top_builddir)/$(PACKAGE)-$(VERSION)/$(subdir)
subdir = include
distdir: $(DISTFILES)
@for file in $(DISTFILES); do \
if test -f $$file; then d=.; else d=$(srcdir); fi; \
if test -d $$d/$$file; then \
cp -pr $$d/$$file $(distdir)/$$file; \
else \
test -f $(distdir)/$$file \
|| ln $$d/$$file $(distdir)/$$file 2> /dev/null \
|| cp -p $$d/$$file $(distdir)/$$file || :; \
fi; \
done
info-am:
info: info-am
dvi-am:
dvi: dvi-am
check-am:
check: check-am
installcheck-am:
installcheck: installcheck-am
install-info-am:
install-info: install-info-am
install-exec-am:
install-exec: install-exec-am
all-am: Makefile all-local
install-data-am: install-data-local
installdirs:
install: install-am
install-exec: install-exec-am
install-data: install-data-am
uninstall: uninstall-am
install-am: all-am
@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
install: install-am
uninstall-am:
uninstall: uninstall-am
all-am: Makefile all-local
all-redirect: all-am
installcheck: installcheck-am
install-strip:
$(MAKE) $(AM_MAKEFLAGS) AM_INSTALL_PROGRAM_FLAGS=-s install
installdirs:
$(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
`test -z '$(STRIP)' || \
echo "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'"` install
mostlyclean-generic:
clean-generic:
distclean-generic:
-rm -f Makefile $(CONFIG_CLEAN_FILES)
-rm -f config.cache config.log stamp-h stamp-h[0-9]*
-rm -f Makefile $(CONFIG_CLEAN_FILES) stamp-h stamp-h[0-9]*
maintainer-clean-generic:
mostlyclean-am: mostlyclean-generic
mostlyclean: mostlyclean-am
clean-am: clean-generic mostlyclean-am
@echo "This command is intended for maintainers to use"
@echo "it deletes files that may require special tools to rebuild."
clean: clean-am
distclean-am: distclean-generic clean-am
-rm -f libtool
clean-am: clean-generic clean-libtool mostlyclean-am
distclean: distclean-am
maintainer-clean-am: maintainer-clean-generic distclean-am
@echo "This command is intended for maintainers to use;"
@echo "it deletes files that may require special tools to rebuild."
distclean-am: clean-am distclean-generic distclean-libtool
dvi: dvi-am
dvi-am:
info: info-am
info-am:
install-data-am: install-data-local
install-exec-am:
install-info:
install-man:
installcheck-am:
maintainer-clean: maintainer-clean-am
.PHONY: tags distdir info-am info dvi-am dvi check check-am \
installcheck-am installcheck install-info-am install-info \
install-exec-am install-exec install-data-local install-data-am \
install-data install-am install uninstall-am uninstall all-local \
all-redirect all-am all installdirs mostlyclean-generic \
distclean-generic clean-generic maintainer-clean-generic clean \
mostlyclean distclean maintainer-clean
maintainer-clean-am: distclean-am maintainer-clean-generic
mostlyclean: mostlyclean-am
mostlyclean-am: mostlyclean-generic mostlyclean-libtool
uninstall-am:
.PHONY: all all-am all-local check check-am clean clean-generic \
clean-libtool distclean distclean-generic distclean-libtool dvi \
dvi-am info info-am install install-am install-data \
install-data-am install-data-local install-exec install-exec-am \
install-info install-info-am install-man install-strip \
installcheck installcheck-am installdirs maintainer-clean \
maintainer-clean-generic mostlyclean mostlyclean-generic \
mostlyclean-libtool uninstall uninstall-am uninstall-info-am
# Here are the rules for building the headers
@ -622,7 +620,6 @@ install-data-local:
# By adding these files here, automake will remove them for 'make clean'
#CLEANFILES = ${allstamps}
# Tell versions [3.59,3.63) of GNU make to not export all variables.
# Otherwise a system limit (for SysV at least) may be exceeded.
.NOEXPORT:

285
libstdc++-v3/include/bits/stl_algo.h
View File

@ -292,42 +292,7 @@ namespace std
return __last;
}
// count and count_if. There are two version of each, one whose return type
// type is void and one (present only if we have partial specialization)
// whose return type is iterator_traits<_InputIter>::difference_type. The
// C++ standard only has the latter version, but the former, which was present
// in the HP STL, is retained for backward compatibility.
template<typename _InputIter, typename _Tp, typename _Size>
void
count(_InputIter __first, _InputIter __last,
const _Tp& __value,
_Size& __n)
{
// concept requirements
__glibcpp_function_requires(_InputIteratorConcept<_InputIter>)
__glibcpp_function_requires(_EqualityComparableConcept<
typename iterator_traits<_InputIter>::value_type >)
__glibcpp_function_requires(_EqualityComparableConcept<_Tp>)
for ( ; __first != __last; ++__first)
if (*__first == __value)
++__n;
}
template<typename _InputIter, typename _Predicate, typename _Size>
void
count_if(_InputIter __first, _InputIter __last,
_Predicate __pred,
_Size& __n)
{
// concept requirements
__glibcpp_function_requires(_InputIteratorConcept<_InputIter>)
__glibcpp_function_requires(_UnaryPredicateConcept<_Predicate,
typename iterator_traits<_InputIter>::value_type>)
for ( ; __first != __last; ++__first)
if (__pred(*__first))
++__n;
}
// count and count_if.
template<typename _InputIter, typename _Tp>
typename iterator_traits<_InputIter>::difference_type
@ -1177,146 +1142,6 @@ __result, __binary_pred, _IterType());
iter_swap(__i, __first + __rand((__i - __first) + 1));
}
// random_sample and random_sample_n (extensions, not part of the standard).
template<typename _ForwardIter, typename _OutputIter, typename _Distance>
_OutputIter
random_sample_n(_ForwardIter __first, _ForwardIter __last,
_OutputIter __out, const _Distance __n)
{
// concept requirements
__glibcpp_function_requires(_ForwardIteratorConcept<_ForwardIter>)
__glibcpp_function_requires(_OutputIteratorConcept<_OutputIter,
typename iterator_traits<_ForwardIter>::value_type>)
_Distance __remaining = distance(__first, __last);
_Distance __m = min(__n, __remaining);
while (__m > 0) {
if (__random_number(__remaining) < __m) {
*__out = *__first;
++__out;
--__m;
}
--__remaining;
++__first;
}
return __out;
}
template<typename _ForwardIter, typename _OutputIter, typename _Distance,
typename _RandomNumberGenerator>
_OutputIter
random_sample_n(_ForwardIter __first, _ForwardIter __last,
_OutputIter __out, const _Distance __n,
_RandomNumberGenerator& __rand)
{
// concept requirements
__glibcpp_function_requires(_ForwardIteratorConcept<_ForwardIter>)
__glibcpp_function_requires(_OutputIteratorConcept<_OutputIter,
typename iterator_traits<_ForwardIter>::value_type>)
__glibcpp_function_requires(_UnaryFunctionConcept<
_RandomNumberGenerator, _Distance, _Distance>)
_Distance __remaining = distance(__first, __last);
_Distance __m = min(__n, __remaining);
while (__m > 0) {
if (__rand(__remaining) < __m) {
*__out = *__first;
++__out;
--__m;
}
--__remaining;
++__first;
}
return __out;
}
template<typename _InputIter, typename _RandomAccessIter, typename _Distance>
_RandomAccessIter
__random_sample(_InputIter __first, _InputIter __last,
_RandomAccessIter __out,
const _Distance __n)
{
_Distance __m = 0;
_Distance __t = __n;
for ( ; __first != __last && __m < __n; ++__m, ++__first)
__out[__m] = *__first;
while (__first != __last) {
++__t;
_Distance __M = __random_number(__t);
if (__M < __n)
__out[__M] = *__first;
++__first;
}
return __out + __m;
}
template<typename _InputIter, typename _RandomAccessIter,
typename _RandomNumberGenerator, typename _Distance>
_RandomAccessIter
__random_sample(_InputIter __first, _InputIter __last,
_RandomAccessIter __out,
_RandomNumberGenerator& __rand,
const _Distance __n)
{
// concept requirements
__glibcpp_function_requires(_UnaryFunctionConcept<
_RandomNumberGenerator, _Distance, _Distance>)
_Distance __m = 0;
_Distance __t = __n;
for ( ; __first != __last && __m < __n; ++__m, ++__first)
__out[__m] = *__first;
while (__first != __last) {
++__t;
_Distance __M = __rand(__t);
if (__M < __n)
__out[__M] = *__first;
++__first;
}
return __out + __m;
}
template<typename _InputIter, typename _RandomAccessIter>
inline _RandomAccessIter
random_sample(_InputIter __first, _InputIter __last,
_RandomAccessIter __out_first, _RandomAccessIter __out_last)
{
// concept requirements
__glibcpp_function_requires(_InputIteratorConcept<_InputIter>)
__glibcpp_function_requires(_Mutable_RandomAccessIteratorConcept<
_RandomAccessIter>)
return __random_sample(__first, __last,
__out_first, __out_last - __out_first);
}
template<typename _InputIter, typename _RandomAccessIter,
typename _RandomNumberGenerator>
inline _RandomAccessIter
random_sample(_InputIter __first, _InputIter __last,
_RandomAccessIter __out_first, _RandomAccessIter __out_last,
_RandomNumberGenerator& __rand)
{
// concept requirements
__glibcpp_function_requires(_InputIteratorConcept<_InputIter>)
__glibcpp_function_requires(_Mutable_RandomAccessIteratorConcept<
_RandomAccessIter>)
return __random_sample(__first, __last,
__out_first, __rand,
__out_last - __out_first);
}
// partition, stable_partition, and their auxiliary functions
template<typename _ForwardIter, typename _Predicate>
@ -3491,114 +3316,6 @@ __result, __binary_pred, _IterType());
__comp);
}
// is_heap, a predicate testing whether or not a range is
// a heap. This function is an extension, not part of the C++
// standard.
template<typename _RandomAccessIter, typename _Distance>
bool
__is_heap(_RandomAccessIter __first, _Distance __n)
{
_Distance __parent = 0;
for (_Distance __child = 1; __child < __n; ++__child) {
if (__first[__parent] < __first[__child])
return false;
if ((__child & 1) == 0)
++__parent;
}
return true;
}
template<typename _RandomAccessIter, typename _Distance,
typename _StrictWeakOrdering>
bool
__is_heap(_RandomAccessIter __first, _StrictWeakOrdering __comp,
_Distance __n)
{
_Distance __parent = 0;
for (_Distance __child = 1; __child < __n; ++__child) {
if (__comp(__first[__parent], __first[__child]))
return false;
if ((__child & 1) == 0)
++__parent;
}
return true;
}
template<typename _RandomAccessIter>
inline bool
is_heap(_RandomAccessIter __first, _RandomAccessIter __last)
{
// concept requirements
__glibcpp_function_requires(_RandomAccessIteratorConcept<_RandomAccessIter>)
__glibcpp_function_requires(_LessThanComparableConcept<
typename iterator_traits<_RandomAccessIter>::value_type>)
return __is_heap(__first, __last - __first);
}
template<typename _RandomAccessIter, typename _StrictWeakOrdering>
inline bool
is_heap(_RandomAccessIter __first, _RandomAccessIter __last,
_StrictWeakOrdering __comp)
{
// concept requirements
__glibcpp_function_requires(_RandomAccessIteratorConcept<_RandomAccessIter>)
__glibcpp_function_requires(_BinaryPredicateConcept<_StrictWeakOrdering,
typename iterator_traits<_RandomAccessIter>::value_type,
typename iterator_traits<_RandomAccessIter>::value_type>)
return __is_heap(__first, __comp, __last - __first);
}
// is_sorted, a predicated testing whether a range is sorted in
// nondescending order. This is an extension, not part of the C++
// standard.
template<typename _ForwardIter>
bool
is_sorted(_ForwardIter __first, _ForwardIter __last)
{
// concept requirements
__glibcpp_function_requires(_ForwardIteratorConcept<_ForwardIter>)
__glibcpp_function_requires(_LessThanComparableConcept<
typename iterator_traits<_ForwardIter>::value_type>)
if (__first == __last)
return true;
_ForwardIter __next = __first;
for (++__next; __next != __last; __first = __next, ++__next) {
if (*__next < *__first)
return false;
}
return true;
}
template<typename _ForwardIter, typename _StrictWeakOrdering>
bool
is_sorted(_ForwardIter __first, _ForwardIter __last, _StrictWeakOrdering __comp)
{
// concept requirements
__glibcpp_function_requires(_ForwardIteratorConcept<_ForwardIter>)
__glibcpp_function_requires(_BinaryPredicateConcept<_StrictWeakOrdering,
typename iterator_traits<_ForwardIter>::value_type,
typename iterator_traits<_ForwardIter>::value_type>)
if (__first == __last)
return true;
_ForwardIter __next = __first;
for (++__next; __next != __last; __first = __next, ++__next) {
if (__comp(*__next, *__first))
return false;
}
return true;
}
} // namespace std
#endif /* __GLIBCPP_INTERNAL_ALGO_H */

345
libstdc++-v3/include/ext/algorithm Normal file
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@ -0,0 +1,345 @@
// Algorithm extensions -*- C++ -*-
// Copyright (C) 2001 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.
*/
#ifndef _EXT_ALGORITHM
#define _EXT_ALGORITHM
#include <bits/std_algorithm.h>
namespace __gnu_cxx
{
// count and count_if: this version, whose return type is void, was present
// in the HP STL, and is retained as an extension for backward compatibility.
template<typename _InputIter, typename _Tp, typename _Size>
void
count(_InputIter __first, _InputIter __last,
const _Tp& __value,
_Size& __n)
{
// concept requirements
__glibcpp_function_requires(_InputIteratorConcept<_InputIter>)
__glibcpp_function_requires(_EqualityComparableConcept<
typename std::iterator_traits<_InputIter>::value_type >)
__glibcpp_function_requires(_EqualityComparableConcept<_Tp>)
for ( ; __first != __last; ++__first)
if (*__first == __value)
++__n;
}
template<typename _InputIter, typename _Predicate, typename _Size>
void
count_if(_InputIter __first, _InputIter __last,
_Predicate __pred,
_Size& __n)
{
// concept requirements
__glibcpp_function_requires(_InputIteratorConcept<_InputIter>)
__glibcpp_function_requires(_UnaryPredicateConcept<_Predicate,
typename std::iterator_traits<_InputIter>::value_type>)
for ( ; __first != __last; ++__first)
if (__pred(*__first))
++__n;
}
// random_sample and random_sample_n (extensions, not part of the standard).
template<typename _ForwardIter, typename _OutputIter, typename _Distance>
_OutputIter
random_sample_n(_ForwardIter __first, _ForwardIter __last,
_OutputIter __out, const _Distance __n)
{
// concept requirements
__glibcpp_function_requires(_ForwardIteratorConcept<_ForwardIter>)
__glibcpp_function_requires(_OutputIteratorConcept<_OutputIter,
typename std::iterator_traits<_ForwardIter>::value_type>)
_Distance __remaining = std::distance(__first, __last);
_Distance __m = std::min(__n, __remaining);
while (__m > 0) {
if (std::__random_number(__remaining) < __m) {
*__out = *__first;
++__out;
--__m;
}
--__remaining;
++__first;
}
return __out;
}
template<typename _ForwardIter, typename _OutputIter, typename _Distance,
typename _RandomNumberGenerator>
_OutputIter
random_sample_n(_ForwardIter __first, _ForwardIter __last,
_OutputIter __out, const _Distance __n,
_RandomNumberGenerator& __rand)
{
// concept requirements
__glibcpp_function_requires(_ForwardIteratorConcept<_ForwardIter>)
__glibcpp_function_requires(_OutputIteratorConcept<_OutputIter,
typename std::iterator_traits<_ForwardIter>::value_type>)
__glibcpp_function_requires(_UnaryFunctionConcept<
_RandomNumberGenerator, _Distance, _Distance>)
_Distance __remaining = std::distance(__first, __last);
_Distance __m = std::min(__n, __remaining);
while (__m > 0) {
if (__rand(__remaining) < __m) {
*__out = *__first;
++__out;
--__m;
}
--__remaining;
++__first;
}
return __out;
}
template<typename _InputIter, typename _RandomAccessIter, typename _Distance>
_RandomAccessIter
__random_sample(_InputIter __first, _InputIter __last,
_RandomAccessIter __out,
const _Distance __n)
{
_Distance __m = 0;
_Distance __t = __n;
for ( ; __first != __last && __m < __n; ++__m, ++__first)
__out[__m] = *__first;
while (__first != __last) {
++__t;
_Distance __M = std::__random_number(__t);
if (__M < __n)
__out[__M] = *__first;
++__first;
}
return __out + __m;
}
template<typename _InputIter, typename _RandomAccessIter,
typename _RandomNumberGenerator, typename _Distance>
_RandomAccessIter
__random_sample(_InputIter __first, _InputIter __last,
_RandomAccessIter __out,
_RandomNumberGenerator& __rand,
const _Distance __n)
{
// concept requirements
__glibcpp_function_requires(_UnaryFunctionConcept<
_RandomNumberGenerator, _Distance, _Distance>)
_Distance __m = 0;
_Distance __t = __n;
for ( ; __first != __last && __m < __n; ++__m, ++__first)
__out[__m] = *__first;
while (__first != __last) {
++__t;
_Distance __M = __rand(__t);
if (__M < __n)
__out[__M] = *__first;
++__first;
}
return __out + __m;
}
template<typename _InputIter, typename _RandomAccessIter>
inline _RandomAccessIter
random_sample(_InputIter __first, _InputIter __last,
_RandomAccessIter __out_first, _RandomAccessIter __out_last)
{
// concept requirements
__glibcpp_function_requires(_InputIteratorConcept<_InputIter>)
__glibcpp_function_requires(_Mutable_RandomAccessIteratorConcept<
_RandomAccessIter>)
return __random_sample(__first, __last,
__out_first, __out_last - __out_first);
}
template<typename _InputIter, typename _RandomAccessIter,
typename _RandomNumberGenerator>
inline _RandomAccessIter
random_sample(_InputIter __first, _InputIter __last,
_RandomAccessIter __out_first, _RandomAccessIter __out_last,
_RandomNumberGenerator& __rand)
{
// concept requirements
__glibcpp_function_requires(_InputIteratorConcept<_InputIter>)
__glibcpp_function_requires(_Mutable_RandomAccessIteratorConcept<
_RandomAccessIter>)
return __random_sample(__first, __last,
__out_first, __rand,
__out_last - __out_first);
}
// is_heap, a predicate testing whether or not a range is
// a heap. This function is an extension, not part of the C++
// standard.
template<typename _RandomAccessIter, typename _Distance>
bool
__is_heap(_RandomAccessIter __first, _Distance __n)
{
_Distance __parent = 0;
for (_Distance __child = 1; __child < __n; ++__child) {
if (__first[__parent] < __first[__child])
return false;
if ((__child & 1) == 0)
++__parent;
}
return true;
}
template<typename _RandomAccessIter, typename _Distance,
typename _StrictWeakOrdering>
bool
__is_heap(_RandomAccessIter __first, _StrictWeakOrdering __comp,
_Distance __n)
{
_Distance __parent = 0;
for (_Distance __child = 1; __child < __n; ++__child) {
if (__comp(__first[__parent], __first[__child]))
return false;
if ((__child & 1) == 0)
++__parent;
}
return true;
}
template<typename _RandomAccessIter>
inline bool
is_heap(_RandomAccessIter __first, _RandomAccessIter __last)
{
// concept requirements
__glibcpp_function_requires(_RandomAccessIteratorConcept<_RandomAccessIter>)
__glibcpp_function_requires(_LessThanComparableConcept<
typename std::iterator_traits<_RandomAccessIter>::value_type>)
return __is_heap(__first, __last - __first);
}
template<typename _RandomAccessIter, typename _StrictWeakOrdering>
inline bool
is_heap(_RandomAccessIter __first, _RandomAccessIter __last,
_StrictWeakOrdering __comp)
{
// concept requirements
__glibcpp_function_requires(_RandomAccessIteratorConcept<_RandomAccessIter>)
__glibcpp_function_requires(_BinaryPredicateConcept<_StrictWeakOrdering,
typename std::iterator_traits<_RandomAccessIter>::value_type,
typename std::iterator_traits<_RandomAccessIter>::value_type>)
return __is_heap(__first, __comp, __last - __first);
}
// is_sorted, a predicated testing whether a range is sorted in
// nondescending order. This is an extension, not part of the C++
// standard.
template<typename _ForwardIter>
bool
is_sorted(_ForwardIter __first, _ForwardIter __last)
{
// concept requirements
__glibcpp_function_requires(_ForwardIteratorConcept<_ForwardIter>)
__glibcpp_function_requires(_LessThanComparableConcept<
typename std::iterator_traits<_ForwardIter>::value_type>)
if (__first == __last)
return true;
_ForwardIter __next = __first;
for (++__next; __next != __last; __first = __next, ++__next) {
if (*__next < *__first)
return false;
}
return true;
}
template<typename _ForwardIter, typename _StrictWeakOrdering>
bool
is_sorted(_ForwardIter __first, _ForwardIter __last, _StrictWeakOrdering __comp)
{
// concept requirements
__glibcpp_function_requires(_ForwardIteratorConcept<_ForwardIter>)
__glibcpp_function_requires(_BinaryPredicateConcept<_StrictWeakOrdering,
typename std::iterator_traits<_ForwardIter>::value_type,
typename std::iterator_traits<_ForwardIter>::value_type>)
if (__first == __last)
return true;
_ForwardIter __next = __first;
for (++__next; __next != __last; __first = __next, ++__next) {
if (__comp(*__next, *__first))
return false;
}
return true;
}
} // namespace __gnu_cxx
#endif /* _EXT_ALGORITHM */

1
libstdc++-v3/testsuite/ext/headers.cc
View File

@ -23,6 +23,7 @@
// This should include a list of all headers in the extension
// subdirectory that are meant to be directly included.
#include <ext/algorithm>
#include <ext/hash_map>
#include <ext/hash_set>
#include <ext/rope>