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merge from gcc

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This commit is contained in:
DJ Delorie 2001-08-22 02:12:15 +00:00
parent 2bf63d0283
commit f01b59ed06
7 changed files with 234 additions and 205 deletions
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5
include/ChangeLog
View file

@ -1,3 +1,8 @@
2001-08-21 Richard Henderson <rth@redhat.com>
* fibheap.h: Tidy formatting.
(fibnode_t): Limit degree to 31 bits to avoid warning.
2001-08-20 Daniel Berlin <dan@cgsoftware.com>
* fibheap.h: New file. Fibonacci heap.

27
include/fibheap.h
View file

@ -19,13 +19,12 @@ along with GNU CC; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* Fibonacci heaps are somewhat complex, but, there's an
article in DDJ on them that explains them pretty well:
/* Fibonacci heaps are somewhat complex, but, there's an article in
DDJ that explains them pretty well:
http://www.ddj.com/articles/1997/9701/9701o/9701o.htm?topic=algoritms
Introduction to algorithms by Corman and Rivest also goes over
them.
Introduction to algorithms by Corman and Rivest also goes over them.
The original paper that introduced them is "Fibonacci heaps and their
uses in improved network optimization algorithms" by Tarjan and
@ -36,45 +35,47 @@ Boston, MA 02111-1307, USA. */
ExtractMin: O(lg n) amortized. O(n) worst case.
DecreaseKey: O(1) amortized. O(lg n) worst case.
Insert: O(2) amortized. O(1) actual.
Union: O(1) amortized. O(1) actual.
*/
Union: O(1) amortized. O(1) actual. */
#ifndef _FIBHEAP_H_
#define _FIBHEAP_H_
#include <ansidecl.h>
typedef long fibheapkey_t;
typedef struct fibheap
{
size_t nodes;
struct fibnode *min;
struct fibnode *root;
} *fibheap_t;
typedef long fibheapkey_t;
typedef struct fibnode
{
struct fibnode *parent;
struct fibnode *child;
struct fibnode *left;
struct fibnode *right;
unsigned int degree : sizeof(size_t) * CHAR_BIT - 2;
unsigned int mark:1;
fibheapkey_t key;
void *data;
unsigned int degree : 31;
unsigned int mark : 1;
} *fibnode_t;
extern fibheap_t fibheap_new PARAMS ((void));
extern fibnode_t fibheap_insert PARAMS ((fibheap_t, fibheapkey_t, void *));
extern int fibheap_empty PARAMS ((fibheap_t));
extern fibheapkey_t fibheap_min_key PARAMS ((fibheap_t));
extern fibheapkey_t fibheap_replace_key PARAMS ((fibheap_t, fibnode_t, fibheapkey_t));
extern void *fibheap_replace_key_data PARAMS ((fibheap_t, fibnode_t, fibheapkey_t, void *));
extern fibheapkey_t fibheap_replace_key PARAMS ((fibheap_t, fibnode_t,
fibheapkey_t));
extern void *fibheap_replace_key_data PARAMS ((fibheap_t, fibnode_t,
fibheapkey_t, void *));
extern void *fibheap_extract_min PARAMS ((fibheap_t));
extern void *fibheap_min PARAMS ((fibheap_t));
extern void *fibheap_replace_data PARAMS ((fibheap_t, fibnode_t, void *));
extern void *fibheap_delete_node PARAMS ((fibheap_t, fibnode_t));
extern void fibheap_delete PARAMS ((fibheap_t));
extern fibheap_t fibheap_union PARAMS ((fibheap_t, fibheap_t));
#endif /* _FIBHEAP_H_ */

12
libiberty/ChangeLog
View file

@ -1,3 +1,15 @@
2001-08-21 Richard Henderson <rth@redhat.com>
* Makefile.in (fibheap.o): Depend on config.h.
* fibheap.c: Tidy formatting. Use config.h.` Rearrange some
functions for inlining.
Tue Aug 21 12:35:04 2001 Christopher Faylor <cgf@cygnus.com>
* configure.in: Need to set HAVE_SYS_ERRLIST and HAVE_SYS_NERR whenever
hosting on cygwin.
* configure: Regenerate.
2001-08-20 Daniel Berlin <dan@cgsoftware.com>
* fibheap.c: New file. Fibonacci heap.

2
libiberty/Makefile.in
View file

@ -265,7 +265,7 @@ cplus-dem.o: config.h $(INCDIR)/demangle.h
cp-demangle.o: config.h $(INCDIR)/dyn-string.h $(INCDIR)/demangle.h
dyn-string.o: config.h $(INCDIR)/dyn-string.h
fdmatch.o: $(INCDIR)/libiberty.h
fibheap.o: $(INCDIR)/libiberty.h $(INCDIR)/fibheap.h
fibheap.o: config.h $(INCDIR)/libiberty.h $(INCDIR)/fibheap.h
fnmatch.o: config.h $(INCDIR)/fnmatch.h
getcwd.o: config.h
getopt.o: config.h $(INCDIR)/getopt.h

124
libiberty/configure vendored
View file

@ -1812,15 +1812,6 @@ EOF
EOF
case "${host}" in
*-*-cygwin*)
cat >> confdefs.h <<\EOF
#define HAVE_SYS_ERRLIST 1
EOF
;;
esac
setobjs=yes
fi
@ -1834,6 +1825,19 @@ fi
case "${host}" in
*-*-cygwin*)
cat >> confdefs.h <<\EOF
#define HAVE_SYS_ERRLIST 1
EOF
cat >> confdefs.h <<\EOF
#define HAVE_SYS_NERR 1
EOF
;;
esac
if test -z "${setobjs}"; then
case "${host}" in
@ -1925,7 +1929,7 @@ if test -z "${setobjs}"; then
# We haven't set the list of objects yet. Use the standard autoconf
# tests. This will only work if the compiler works.
echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works""... $ac_c" 1>&6
echo "configure:1929: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
echo "configure:1933: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
ac_ext=c
# CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
@ -1936,12 +1940,12 @@ cross_compiling=$ac_cv_prog_cc_cross
cat > conftest.$ac_ext << EOF
#line 1940 "configure"
#line 1944 "configure"
#include "confdefs.h"
main(){return(0);}
EOF
if { (eval echo configure:1945: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
if { (eval echo configure:1949: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
ac_cv_prog_cc_works=yes
# If we can't run a trivial program, we are probably using a cross compiler.
if (./conftest; exit) 2>/dev/null; then
@ -1967,19 +1971,19 @@ if test $ac_cv_prog_cc_works = no; then
{ echo "configure: error: installation or configuration problem: C compiler cannot create executables." 1>&2; exit 1; }
fi
echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler""... $ac_c" 1>&6
echo "configure:1971: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5
echo "configure:1975: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5
echo "$ac_t""$ac_cv_prog_cc_cross" 1>&6
cross_compiling=$ac_cv_prog_cc_cross
for ac_func in $funcs
do
echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
echo "configure:1978: checking for $ac_func" >&5
echo "configure:1982: checking for $ac_func" >&5
if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
#line 1983 "configure"
#line 1987 "configure"
#include "confdefs.h"
/* System header to define __stub macros and hopefully few prototypes,
which can conflict with char $ac_func(); below. */
@ -2002,7 +2006,7 @@ $ac_func();
; return 0; }
EOF
if { (eval echo configure:2006: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
if { (eval echo configure:2010: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
rm -rf conftest*
eval "ac_cv_func_$ac_func=yes"
else
@ -2029,12 +2033,12 @@ done
echo $ac_n "checking whether alloca needs Cray hooks""... $ac_c" 1>&6
echo "configure:2033: checking whether alloca needs Cray hooks" >&5
echo "configure:2037: checking whether alloca needs Cray hooks" >&5
if eval "test \"`echo '$''{'ac_cv_os_cray'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
#line 2038 "configure"
#line 2042 "configure"
#include "confdefs.h"
#if defined(CRAY) && ! defined(CRAY2)
webecray
@ -2059,12 +2063,12 @@ echo "$ac_t""$ac_cv_os_cray" 1>&6
if test $ac_cv_os_cray = yes; then
for ac_func in _getb67 GETB67 getb67; do
echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
echo "configure:2063: checking for $ac_func" >&5
echo "configure:2067: checking for $ac_func" >&5
if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
#line 2068 "configure"
#line 2072 "configure"
#include "confdefs.h"
/* System header to define __stub macros and hopefully few prototypes,
which can conflict with char $ac_func(); below. */
@ -2087,7 +2091,7 @@ $ac_func();
; return 0; }
EOF
if { (eval echo configure:2091: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
if { (eval echo configure:2095: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
rm -rf conftest*
eval "ac_cv_func_$ac_func=yes"
else
@ -2113,7 +2117,7 @@ fi
fi
echo $ac_n "checking stack direction for C alloca""... $ac_c" 1>&6
echo "configure:2117: checking stack direction for C alloca" >&5
echo "configure:2121: checking stack direction for C alloca" >&5
if eval "test \"`echo '$''{'ac_cv_c_stack_direction'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
@ -2121,7 +2125,7 @@ else
ac_cv_c_stack_direction=0
else
cat > conftest.$ac_ext <<EOF
#line 2125 "configure"
#line 2129 "configure"
#include "confdefs.h"
find_stack_direction ()
{
@ -2140,7 +2144,7 @@ main ()
exit (find_stack_direction() < 0);
}
EOF
if { (eval echo configure:2144: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
if { (eval echo configure:2148: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
then
ac_cv_c_stack_direction=1
else
@ -2161,12 +2165,12 @@ EOF
echo $ac_n "checking for ANSI C header files""... $ac_c" 1>&6
echo "configure:2165: checking for ANSI C header files" >&5
echo "configure:2169: checking for ANSI C header files" >&5
if eval "test \"`echo '$''{'ac_cv_header_stdc'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
#line 2170 "configure"
#line 2174 "configure"
#include "confdefs.h"
#include <stdlib.h>
#include <stdarg.h>
@ -2174,7 +2178,7 @@ else
#include <float.h>
EOF
ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
{ (eval echo configure:2178: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
{ (eval echo configure:2182: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
if test -z "$ac_err"; then
rm -rf conftest*
@ -2191,7 +2195,7 @@ rm -f conftest*
if test $ac_cv_header_stdc = yes; then
# SunOS 4.x string.h does not declare mem*, contrary to ANSI.
cat > conftest.$ac_ext <<EOF
#line 2195 "configure"
#line 2199 "configure"
#include "confdefs.h"
#include <string.h>
EOF
@ -2209,7 +2213,7 @@ fi
if test $ac_cv_header_stdc = yes; then
# ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
cat > conftest.$ac_ext <<EOF
#line 2213 "configure"
#line 2217 "configure"
#include "confdefs.h"
#include <stdlib.h>
EOF
@ -2230,7 +2234,7 @@ if test "$cross_compiling" = yes; then
:
else
cat > conftest.$ac_ext <<EOF
#line 2234 "configure"
#line 2238 "configure"
#include "confdefs.h"
#include <ctype.h>
#define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
@ -2241,7 +2245,7 @@ if (XOR (islower (i), ISLOWER (i)) || toupper (i) != TOUPPER (i)) exit(2);
exit (0); }
EOF
if { (eval echo configure:2245: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
if { (eval echo configure:2249: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
then
:
else
@ -2265,12 +2269,12 @@ EOF
fi
echo $ac_n "checking for pid_t""... $ac_c" 1>&6
echo "configure:2269: checking for pid_t" >&5
echo "configure:2273: checking for pid_t" >&5
if eval "test \"`echo '$''{'ac_cv_type_pid_t'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
#line 2274 "configure"
#line 2278 "configure"
#include "confdefs.h"
#include <sys/types.h>
#if STDC_HEADERS
@ -2299,17 +2303,17 @@ fi
ac_safe=`echo "vfork.h" | sed 'y%./+-%__p_%'`
echo $ac_n "checking for vfork.h""... $ac_c" 1>&6
echo "configure:2303: checking for vfork.h" >&5
echo "configure:2307: checking for vfork.h" >&5
if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
#line 2308 "configure"
#line 2312 "configure"
#include "confdefs.h"
#include <vfork.h>
EOF
ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
{ (eval echo configure:2313: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
{ (eval echo configure:2317: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
if test -z "$ac_err"; then
rm -rf conftest*
@ -2334,18 +2338,18 @@ else
fi
echo $ac_n "checking for working vfork""... $ac_c" 1>&6
echo "configure:2338: checking for working vfork" >&5
echo "configure:2342: checking for working vfork" >&5
if eval "test \"`echo '$''{'ac_cv_func_vfork_works'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
if test "$cross_compiling" = yes; then
echo $ac_n "checking for vfork""... $ac_c" 1>&6
echo "configure:2344: checking for vfork" >&5
echo "configure:2348: checking for vfork" >&5
if eval "test \"`echo '$''{'ac_cv_func_vfork'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
#line 2349 "configure"
#line 2353 "configure"
#include "confdefs.h"
/* System header to define __stub macros and hopefully few prototypes,
which can conflict with char vfork(); below. */
@ -2368,7 +2372,7 @@ vfork();
; return 0; }
EOF
if { (eval echo configure:2372: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
if { (eval echo configure:2376: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
rm -rf conftest*
eval "ac_cv_func_vfork=yes"
else
@ -2390,7 +2394,7 @@ fi
ac_cv_func_vfork_works=$ac_cv_func_vfork
else
cat > conftest.$ac_ext <<EOF
#line 2394 "configure"
#line 2398 "configure"
#include "confdefs.h"
/* Thanks to Paul Eggert for this test. */
#include <stdio.h>
@ -2485,7 +2489,7 @@ main() {
}
}
EOF
if { (eval echo configure:2489: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
if { (eval echo configure:2493: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
then
ac_cv_func_vfork_works=yes
else
@ -2512,19 +2516,19 @@ fi
fi
for v in $vars; do
echo $ac_n "checking for $v""... $ac_c" 1>&6
echo "configure:2516: checking for $v" >&5
echo "configure:2520: checking for $v" >&5
if eval "test \"`echo '$''{'libiberty_cv_var_$v'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
#line 2521 "configure"
#line 2525 "configure"
#include "confdefs.h"
int *p;
int main() {
extern int $v; p = &$v;
; return 0; }
EOF
if { (eval echo configure:2528: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
if { (eval echo configure:2532: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
rm -rf conftest*
eval "libiberty_cv_var_$v=yes"
else
@ -2550,12 +2554,12 @@ EOF
for ac_func in $checkfuncs
do
echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
echo "configure:2554: checking for $ac_func" >&5
echo "configure:2558: checking for $ac_func" >&5
if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
#line 2559 "configure"
#line 2563 "configure"
#include "confdefs.h"
/* System header to define __stub macros and hopefully few prototypes,
which can conflict with char $ac_func(); below. */
@ -2578,7 +2582,7 @@ $ac_func();
; return 0; }
EOF
if { (eval echo configure:2582: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
if { (eval echo configure:2586: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
rm -rf conftest*
eval "ac_cv_func_$ac_func=yes"
else
@ -2608,17 +2612,17 @@ for ac_hdr in unistd.h
do
ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
echo "configure:2612: checking for $ac_hdr" >&5
echo "configure:2616: checking for $ac_hdr" >&5
if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
#line 2617 "configure"
#line 2621 "configure"
#include "confdefs.h"
#include <$ac_hdr>
EOF
ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
{ (eval echo configure:2622: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
{ (eval echo configure:2626: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
if test -z "$ac_err"; then
rm -rf conftest*
@ -2647,12 +2651,12 @@ done
for ac_func in getpagesize
do
echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
echo "configure:2651: checking for $ac_func" >&5
echo "configure:2655: checking for $ac_func" >&5
if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
#line 2656 "configure"
#line 2660 "configure"
#include "confdefs.h"
/* System header to define __stub macros and hopefully few prototypes,
which can conflict with char $ac_func(); below. */
@ -2675,7 +2679,7 @@ $ac_func();
; return 0; }
EOF
if { (eval echo configure:2679: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
if { (eval echo configure:2683: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
rm -rf conftest*
eval "ac_cv_func_$ac_func=yes"
else
@ -2700,7 +2704,7 @@ fi
done
echo $ac_n "checking for working mmap""... $ac_c" 1>&6
echo "configure:2704: checking for working mmap" >&5
echo "configure:2708: checking for working mmap" >&5
if eval "test \"`echo '$''{'ac_cv_func_mmap_fixed_mapped'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
@ -2708,7 +2712,7 @@ else
ac_cv_func_mmap_fixed_mapped=no
else
cat > conftest.$ac_ext <<EOF
#line 2712 "configure"
#line 2716 "configure"
#include "confdefs.h"
/* Thanks to Mike Haertel and Jim Avera for this test.
@ -2848,7 +2852,7 @@ main()
}
EOF
if { (eval echo configure:2852: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
if { (eval echo configure:2856: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
then
ac_cv_func_mmap_fixed_mapped=yes
else
@ -2872,7 +2876,7 @@ fi
echo $ac_n "checking for working strncmp""... $ac_c" 1>&6
echo "configure:2876: checking for working strncmp" >&5
echo "configure:2880: checking for working strncmp" >&5
if eval "test \"`echo '$''{'ac_cv_func_strncmp_works'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
@ -2880,7 +2884,7 @@ else
ac_cv_func_strncmp_works=no
else
cat > conftest.$ac_ext <<EOF
#line 2884 "configure"
#line 2888 "configure"
#include "confdefs.h"
/* Test by Jim Wilson and Kaveh Ghazi.
@ -2941,7 +2945,7 @@ main ()
}
EOF
if { (eval echo configure:2945: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
if { (eval echo configure:2949: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
then
ac_cv_func_strncmp_works=yes
else

13
libiberty/configure.in
View file

@ -177,12 +177,6 @@ if test -n "${with_target_subdir}"; then
# Of the functions in $checkfuncs, newlib only has strerror.
AC_DEFINE_NOAUTOHEADER(HAVE_STRERROR)
case "${host}" in
*-*-cygwin*)
AC_DEFINE(HAVE_SYS_ERRLIST)
;;
esac
setobjs=yes
fi
@ -196,6 +190,13 @@ fi
AC_SUBST(CHECK)
case "${host}" in
*-*-cygwin*)
AC_DEFINE(HAVE_SYS_ERRLIST)
AC_DEFINE(HAVE_SYS_NERR)
;;
esac
if test -z "${setobjs}"; then
case "${host}" in

256
libiberty/fibheap.c
View file

@ -1,4 +1,3 @@
/* A Fibonacci heap datatype.
Copyright 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
Contributed by Daniel Berlin (dan@cgsoftware.com).
@ -20,13 +19,24 @@ along with GNU CC; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* Fibonacci heaps */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#ifdef HAVE_LIMITS_H
#include <limits.h>
#endif
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifdef HAVE_STRING_H
#include <string.h>
#endif
#include "libiberty.h"
#include "fibheap.h"
#define FIBHEAPKEY_MIN LONG_MIN
static void fibheap_init PARAMS ((fibheap_t));
static void fibheap_ins_root PARAMS ((fibheap_t, fibnode_t));
static void fibheap_rem_root PARAMS ((fibheap_t, fibnode_t));
@ -36,13 +46,25 @@ static void fibheap_cut PARAMS ((fibheap_t, fibnode_t, fibnode_t));
static void fibheap_cascading_cut PARAMS ((fibheap_t, fibnode_t));
static fibnode_t fibheap_extr_min_node PARAMS ((fibheap_t));
static int fibheap_compare PARAMS ((fibheap_t, fibnode_t, fibnode_t));
static int fibheap_comp_data PARAMS ((fibheap_t, fibheapkey_t, void *, fibnode_t));
static int fibheap_comp_data PARAMS ((fibheap_t, fibheapkey_t, void *,
fibnode_t));
static fibnode_t fibnode_new PARAMS ((void));
static void fibnode_init PARAMS ((fibnode_t));
static void fibnode_insert_after PARAMS ((fibnode_t, fibnode_t));
#define fibnode_insert_before(a, b) fibnode_insert_after (a->left, b)
static fibnode_t fibnode_remove PARAMS ((fibnode_t));
/* Initialize the passed in fibonacci heap. */
static inline void
fibheap_init (heap)
fibheap_t heap;
{
heap->nodes = 0;
heap->min = NULL;
heap->root = NULL;
}
/* Create a new fibonacci heap. */
fibheap_t
fibheap_new ()
@ -57,14 +79,60 @@ fibheap_new ()
return result;
}
/* Initialize the passed in fibonacci heap. */
static void
fibheap_init (heap)
fibheap_t heap;
/* Initialize the passed in fibonacci heap node. */
static inline void
fibnode_init (node)
fibnode_t node;
{
heap->nodes = 0;
heap->min = NULL;
heap->root = NULL;
node->degree = 0;
node->mark = 0;
node->parent = NULL;
node->child = NULL;
node->left = node;
node->right = node;
node->data = NULL;
}
/* Create a new fibonacci heap node. */
static inline fibnode_t
fibnode_new ()
{
fibnode_t e;
if ((e = xmalloc (sizeof *e)) == NULL)
return NULL;
fibnode_init (e);
return e;
}
static inline int
fibheap_compare (heap, a, b)
fibheap_t heap ATTRIBUTE_UNUSED;
fibnode_t a;
fibnode_t b;
{
if (a->key < b->key)
return -1;
if (a->key > b->key)
return 1;
return 0;
}
static inline int
fibheap_comp_data (heap, key, data, b)
fibheap_t heap;
fibheapkey_t key;
void *data;
fibnode_t b;
{
struct fibnode a;
a.key = key;
a.data = data;
return fibheap_compare (heap, &a, b);
}
/* Insert DATA, with priority KEY, into HEAP. */
@ -75,9 +143,11 @@ fibheap_insert (heap, key, data)
void *data;
{
fibnode_t node;
/* Create the new node, if we fail, return NULL. */
if ((node = fibnode_new ()) == NULL)
return NULL;
/* Set the node's data. */
node->data = data;
node->key = key;
@ -85,8 +155,8 @@ fibheap_insert (heap, key, data)
/* Insert it into the root list. */
fibheap_ins_root (heap, node);
/* If their was no minimum, or this key is less than the min, it's the new
min. */
/* If their was no minimum, or this key is less than the min,
it's the new min. */
if (heap->min == NULL || node->key < heap->min->key)
heap->min = node;
@ -123,28 +193,26 @@ fibheap_union (heapa, heapb)
fibheap_t heapa;
fibheap_t heapb;
{
fibnode_t temp;
fibnode_t a_root, b_root, temp;
/* If one of the heaps is empty, the union is just the other heap. */
if (heapa->root == NULL || heapb->root == NULL)
if ((a_root = heapa->root) == NULL)
{
if (heapa->root == NULL)
{
free (heapa);
return heapb;
}
else
{
free (heapb);
return heapa;
}
free (heapa);
return heapb;
}
if ((b_root = heapb->root) == NULL)
{
free (heapb);
return heapa;
}
/* Merge them to the next nodes on the opposite chain. */
heapa->root->left->right = heapb->root;
heapb->root->left->right = heapa->root;
temp = heapa->root->left;
heapa->root->left = heapb->root->left;
heapb->root->left = temp;
a_root->left->right = b_root;
b_root->left->right = a_root;
temp = a_root->left;
a_root->left = b_root->left;
b_root->left = temp;
heapa->nodes += heapb->nodes;
/* And set the new minimum, if it's changed. */
@ -161,9 +229,8 @@ fibheap_extract_min (heap)
fibheap_t heap;
{
fibnode_t z;
void *ret;
void *ret = NULL;
ret = NULL;
/* If we don't have a min set, it means we have no nodes. */
if (heap->min != NULL)
{
@ -177,31 +244,6 @@ fibheap_extract_min (heap)
return ret;
}
/* Replace the DATA associated with NODE. */
void *
fibheap_replace_data (heap, node, data)
fibheap_t heap;
fibnode_t node;
void *data;
{
return fibheap_replace_key_data (heap, node, node->key, data);
}
/* Replace the KEY associated with NODE. */
fibheapkey_t
fibheap_replace_key (heap, node, key)
fibheap_t heap;
fibnode_t node;
fibheapkey_t key;
{
int ret;
ret = node->key;
(void) fibheap_replace_key_data (heap, node, key, node->data);
return ret;
}
/* Replace both the KEY and the DATA associated with NODE. */
void *
fibheap_replace_key_data (heap, node, key, data)
@ -244,19 +286,41 @@ fibheap_replace_key_data (heap, node, key, data)
return odata;
}
/* Replace the DATA associated with NODE. */
void *
fibheap_replace_data (heap, node, data)
fibheap_t heap;
fibnode_t node;
void *data;
{
return fibheap_replace_key_data (heap, node, node->key, data);
}
/* Replace the KEY associated with NODE. */
fibheapkey_t
fibheap_replace_key (heap, node, key)
fibheap_t heap;
fibnode_t node;
fibheapkey_t key;
{
int okey = node->key;
fibheap_replace_key_data (heap, node, key, node->data);
return okey;
}
/* Delete NODE from HEAP. */
void *
fibheap_delete_node (heap, node)
fibheap_t heap;
fibnode_t node;
{
void *k;
void *ret = node->data;
/* To perform delete, we just make it the min key, and extract. */
k = node->data;
fibheap_replace_key (heap, node, LONG_MIN);
fibheap_replace_key (heap, node, FIBHEAPKEY_MIN);
fibheap_extract_min (heap);
return k;
return ret;
}
/* Delete HEAP. */
@ -278,32 +342,29 @@ fibheap_empty (heap)
return heap->nodes == 0;
}
/* Extract the minimum node of the heap. */
static fibnode_t
fibheap_extr_min_node (heap)
fibheap_t heap;
{
fibnode_t ret;
fibnode_t ret = heap->min;
fibnode_t x, y, orig;
ret = heap->min;
orig = NULL;
/* Attach the child list of the minimum node to the root list of the heap.
If there is no child list, we don't do squat. */
for (x = ret->child; x != orig && x != NULL;)
for (x = ret->child, orig = NULL; x != orig && x != NULL; x = y)
{
if (orig == NULL)
orig = x;
y = x->right;
x->parent = NULL;
fibheap_ins_root (heap, x);
x = y;
}
/* Remove the old root. */
fibheap_rem_root (heap, ret);
heap->nodes--;
/* If we are left with no nodes, then the min is NULL. */
if (heap->nodes == 0)
heap->min = NULL;
@ -333,8 +394,9 @@ fibheap_ins_root (heap, node)
node->right = node;
return;
}
/* Otherwise, insert it in the circular root list between the root and it's
right node. */
/* Otherwise, insert it in the circular root list between the root
and it's right node. */
fibnode_insert_after (heap->root, node);
}
@ -450,33 +512,6 @@ fibheap_cascading_cut (heap, y)
}
}
static fibnode_t
fibnode_new ()
{
fibnode_t e;
if ((e = xmalloc (sizeof *e)) == NULL)
return NULL;
fibnode_init (e);
return e;
}
static void
fibnode_init (node)
fibnode_t node;
{
node->degree = 0;
node->mark = 0;
node->parent = NULL;
node->child = NULL;
node->left = node;
node->right = node;
node->data = NULL;
}
static void
fibnode_insert_after (a, b)
fibnode_t a;
@ -498,7 +533,6 @@ fibnode_insert_after (a, b)
}
}
static fibnode_t
fibnode_remove (node)
fibnode_t node;
@ -522,31 +556,3 @@ fibnode_remove (node)
return ret;
}
static int
fibheap_compare (heap, a, b)
fibheap_t heap ATTRIBUTE_UNUSED;
fibnode_t a;
fibnode_t b;
{
if (a->key < b->key)
return -1;
if (a->key > b->key)
return 1;
return 0;
}
static int
fibheap_comp_data (heap, key, data, b)
fibheap_t heap;
fibheapkey_t key;
void *data;
fibnode_t b;
{
struct fibnode a;
a.key = key;
a.data = data;
return fibheap_compare (heap, &a, b);
}