From: Wolfgang Bangerth <bangerth@math.tamu.edu>
Date: Fri, 25 Jan 2002 11:54:04 +0000 (+0000)
Subject: Check for the availability of numeric_limits classes.
X-Git-Tag: v8.0.0~18434
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=502c6a00299ccaff0effe373e7363d41292989d9;p=dealii.git

Check for the availability of numeric_limits classes.


git-svn-id: https://svn.dealii.org/trunk@5401 0785d39b-7218-0410-832d-ea1e28bc413d
---

diff --git a/deal.II/acconfig.h b/deal.II/acconfig.h
index 040ea97e63..9e6823c19b 100644
--- a/deal.II/acconfig.h
+++ b/deal.II/acconfig.h
@@ -2,7 +2,7 @@
 //    $Id$
 //    Version: $Name$
 //
-//    Copyright (C) 2001 by the deal.II authors
+//    Copyright (C) 2001, 2002 by the deal.II authors
 //
 //    This file is subject to QPL and may not be  distributed
 //    without copyright and license information. Please refer
diff --git a/deal.II/aclocal.m4 b/deal.II/aclocal.m4
index b45eb4c0d0..a192056481 100644
--- a/deal.II/aclocal.m4
+++ b/deal.II/aclocal.m4
@@ -271,6 +271,7 @@ AC_DEFUN(DEAL_II_CHECK_ISNAN_FLAG, dnl
 )      
 
 
+
 dnl rand_r is defined for some compiler flag combinations, but not for
 dnl others. check that. note that since these are C++ flags, we can't
 dnl just use AC_CHECK_FUNCS
@@ -298,6 +299,7 @@ int i=rand_r(&i);
 )
 
 
+
 dnl On some systems (well, DEC Alphas are the only ones we know of),
 dnl gcc2.95 throws the hands in the air if it sees one of the AssertThrow
 dnl calls, and dies with an internal compiler error. If this is the case,
@@ -469,7 +471,7 @@ dnl Up to early gcc2.95 releases, the i/ostringstream classes were not
 dnl available. check their availability, or whether we have to fall back
 dnl to the old strstream classes.
 dnl
-dnl Usage: DEAL_II_HAVE_STD_RINGSTREAM
+dnl Usage: DEAL_II_HAVE_STD_STRINGSTREAM
 dnl
 AC_DEFUN(DEAL_II_HAVE_STD_STRINGSTREAM, dnl
   AC_MSG_CHECKING(for std::i/ostringstream classes)
@@ -495,6 +497,7 @@ AC_DEFUN(DEAL_II_HAVE_STD_STRINGSTREAM, dnl
 )
 
 
+
 dnl For gcc 2.95, when using the random_shuffle function with -ansi compiler flag,
 dnl there is an error saying that lrand48 is undeclared. Fix that by declaring
 dnl that function ourselves if necessary.
@@ -618,3 +621,31 @@ AC_DEFUN(DEAL_II_CHECK_ADVANCE_WARNING, dnl
 	]
   )
 )
+
+
+
+dnl Check whether the numeric_limits classes are available
+dnl
+dnl Usage: DEAL_II_HAVE_STD_NUMERIC_LIMITS
+dnl
+AC_DEFUN(DEAL_II_HAVE_STD_NUMERIC_LIMITS, dnl
+  AC_MSG_CHECKING(for std::numeric_limits classes)
+  AC_LANG_CPLUSPLUS
+  CXXFLAGS="$CXXFLAGSG"
+  AC_TRY_COMPILE(
+    [
+#include <limits>
+    ],
+    [
+	unsigned int i = std::numeric_limits<unsigned int>::eps;
+    ],
+    [
+      AC_MSG_RESULT(yes)
+      AC_DEFINE(HAVE_STD_NUMERIC_LIMITS, 1, 
+                [Define if the compiler's library in use provides
+                 std::numeric_limits classes in the appropriate header file])
+    ],
+    [
+      AC_MSG_RESULT(no)
+    ])
+)
diff --git a/deal.II/base/include/base/config.h.in b/deal.II/base/include/base/config.h.in
index ddabbe72a5..8e6b3a27d1 100644
--- a/deal.II/base/include/base/config.h.in
+++ b/deal.II/base/include/base/config.h.in
@@ -57,6 +57,10 @@
                  std::i/ostringstream classes (early gcc versions did not) */
 #undef HAVE_STD_STRINGSTREAM
 
+/* Define if the compiler's library in use provides
+                 std::numeric_limits classes in the appropriate header file */
+#undef HAVE_STD_NUMERIC_LIMITS
+
 /* Define if you have the rand_r function */
 #undef DEAL_II_DECLARE_LRAND48
 
diff --git a/deal.II/configure b/deal.II/configure
index 7eb7bbab70..e56e8153f7 100755
--- a/deal.II/configure
+++ b/deal.II/configure
@@ -47,6 +47,13 @@
 
 
 
+
+
+
+
+
+
+
 
 
 
@@ -650,7 +657,7 @@ else { echo "configure: error: can not run $ac_config_sub" 1>&2; exit 1; }
 fi
 
 echo $ac_n "checking host system type""... $ac_c" 1>&6
-echo "configure:654: checking host system type" >&5
+echo "configure:661: checking host system type" >&5
 
 host_alias=$host
 case "$host_alias" in
@@ -671,7 +678,7 @@ host_os=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
 echo "$ac_t""$host" 1>&6
 
 echo $ac_n "checking target system type""... $ac_c" 1>&6
-echo "configure:675: checking target system type" >&5
+echo "configure:682: checking target system type" >&5
 
 target_alias=$target
 case "$target_alias" in
@@ -689,7 +696,7 @@ target_os=`echo $target | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
 echo "$ac_t""$target" 1>&6
 
 echo $ac_n "checking build system type""... $ac_c" 1>&6
-echo "configure:693: checking build system type" >&5
+echo "configure:700: checking build system type" >&5
 
 build_alias=$build
 case "$build_alias" in
@@ -727,7 +734,7 @@ cross_compiling=$ac_cv_prog_cxx_cross
 # Extract the first word of "gcc", so it can be a program name with args.
 set dummy gcc; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:731: checking for $ac_word" >&5
+echo "configure:738: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -757,7 +764,7 @@ if test -z "$CC"; then
   # Extract the first word of "cc", so it can be a program name with args.
 set dummy cc; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:761: checking for $ac_word" >&5
+echo "configure:768: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -808,7 +815,7 @@ fi
       # Extract the first word of "cl", so it can be a program name with args.
 set dummy cl; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:812: checking for $ac_word" >&5
+echo "configure:819: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -840,7 +847,7 @@ fi
 fi
 
 echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works""... $ac_c" 1>&6
-echo "configure:844: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
+echo "configure:851: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
 
 ac_ext=c
 # CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
@@ -851,12 +858,12 @@ cross_compiling=$ac_cv_prog_cc_cross
 
 cat > conftest.$ac_ext << EOF
 
-#line 855 "configure"
+#line 862 "configure"
 #include "confdefs.h"
 
 main(){return(0);}
 EOF
-if { (eval echo configure:860: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:867: \"$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
@@ -882,12 +889,12 @@ 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""... $ac_c" 1>&6
-echo "configure:886: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5
+echo "configure:893: checking whether the C compiler ($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
 
 echo $ac_n "checking whether we are using GNU C""... $ac_c" 1>&6
-echo "configure:891: checking whether we are using GNU C" >&5
+echo "configure:898: checking whether we are using GNU C" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_gcc'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -896,7 +903,7 @@ else
   yes;
 #endif
 EOF
-if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:900: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
+if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:907: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
   ac_cv_prog_gcc=yes
 else
   ac_cv_prog_gcc=no
@@ -915,7 +922,7 @@ ac_test_CFLAGS="${CFLAGS+set}"
 ac_save_CFLAGS="$CFLAGS"
 CFLAGS=
 echo $ac_n "checking whether ${CC-cc} accepts -g""... $ac_c" 1>&6
-echo "configure:919: checking whether ${CC-cc} accepts -g" >&5
+echo "configure:926: checking whether ${CC-cc} accepts -g" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_cc_g'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -949,7 +956,7 @@ fi
 # Extract the first word of "$CC", so it can be a program name with args.
 set dummy $CC; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:953: checking for $ac_word" >&5
+echo "configure:960: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_path_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -990,7 +997,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:994: checking for $ac_word" >&5
+echo "configure:1001: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CXX'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1022,7 +1029,7 @@ test -n "$CXX" || CXX="gcc"
 
 
 echo $ac_n "checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) works""... $ac_c" 1>&6
-echo "configure:1026: checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) works" >&5
+echo "configure:1033: checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) works" >&5
 
 ac_ext=C
 # CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
@@ -1033,12 +1040,12 @@ cross_compiling=$ac_cv_prog_cxx_cross
 
 cat > conftest.$ac_ext << EOF
 
-#line 1037 "configure"
+#line 1044 "configure"
 #include "confdefs.h"
 
 int main(){return(0);}
 EOF
-if { (eval echo configure:1042: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1049: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   ac_cv_prog_cxx_works=yes
   # If we can't run a trivial program, we are probably using a cross compiler.
   if (./conftest; exit) 2>/dev/null; then
@@ -1064,12 +1071,12 @@ if test $ac_cv_prog_cxx_works = no; then
   { echo "configure: error: installation or configuration problem: C++ compiler cannot create executables." 1>&2; exit 1; }
 fi
 echo $ac_n "checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) is a cross-compiler""... $ac_c" 1>&6
-echo "configure:1068: checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) is a cross-compiler" >&5
+echo "configure:1075: checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) is a cross-compiler" >&5
 echo "$ac_t""$ac_cv_prog_cxx_cross" 1>&6
 cross_compiling=$ac_cv_prog_cxx_cross
 
 echo $ac_n "checking whether we are using GNU C++""... $ac_c" 1>&6
-echo "configure:1073: checking whether we are using GNU C++" >&5
+echo "configure:1080: checking whether we are using GNU C++" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_gxx'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1078,7 +1085,7 @@ else
   yes;
 #endif
 EOF
-if { ac_try='${CXX-g++} -E conftest.C'; { (eval echo configure:1082: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
+if { ac_try='${CXX-g++} -E conftest.C'; { (eval echo configure:1089: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
   ac_cv_prog_gxx=yes
 else
   ac_cv_prog_gxx=no
@@ -1097,7 +1104,7 @@ ac_test_CXXFLAGS="${CXXFLAGS+set}"
 ac_save_CXXFLAGS="$CXXFLAGS"
 CXXFLAGS=
 echo $ac_n "checking whether ${CXX-g++} accepts -g""... $ac_c" 1>&6
-echo "configure:1101: checking whether ${CXX-g++} accepts -g" >&5
+echo "configure:1108: checking whether ${CXX-g++} accepts -g" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_cxx_g'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1132,7 +1139,7 @@ CXXFLAGS="$OLDCXXFLAGS"
 # Extract the first word of "$CXX", so it can be a program name with args.
 set dummy $CXX; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1136: checking for $ac_word" >&5
+echo "configure:1143: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_path_CXX'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1326,9 +1333,9 @@ cross_compiling=$ac_cv_prog_cxx_cross
 
   CXXFLAGS="$CXXFLAGSG -Werror"
   echo $ac_n "checking for std::advance warning""... $ac_c" 1>&6
-echo "configure:1330: checking for std::advance warning" >&5
+echo "configure:1337: checking for std::advance warning" >&5
   cat > conftest.$ac_ext <<EOF
-#line 1332 "configure"
+#line 1339 "configure"
 #include "confdefs.h"
 
 #include <map>
@@ -1342,7 +1349,7 @@ int main() {
 	
 ; return 0; }
 EOF
-if { (eval echo configure:1346: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1353: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   
 	  	  echo "$ac_t""no" 1>&6
@@ -1425,12 +1432,12 @@ fi
 
 if test "$GXX" = yes ; then
   echo $ac_n "checking whether -ggdb works for long symbols""... $ac_c" 1>&6
-echo "configure:1429: checking whether -ggdb works for long symbols" >&5
+echo "configure:1436: checking whether -ggdb works for long symbols" >&5
   case "$target" in
           alpha*-osf*)
       	  CXXFLAGS="-ggdb $CXXFLAGSG"
  	  cat > conftest.$ac_ext <<EOF
-#line 1434 "configure"
+#line 1441 "configure"
 #include "confdefs.h"
 
 #include <string>
@@ -1451,7 +1458,7 @@ int main() {
 	    
 ; return 0; }
 EOF
-if { (eval echo configure:1455: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1462: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   
               CXXFLAGSG="-ggdb $CXXFLAGSG"
@@ -1542,7 +1549,7 @@ if test "$enablemultithreading" = yes ; then
   if test "$GXX" = yes ; then
     
   echo $ac_n "checking for platform specific thread flags""... $ac_c" 1>&6
-echo "configure:1546: checking for platform specific thread flags" >&5
+echo "configure:1553: checking for platform specific thread flags" >&5
   
   for i in threads mt pthread pthreads mthreads Kthread kthread invalid_last_entry; do
     CXXFLAGS="$CXXFLAGSG -$i"
@@ -1578,7 +1585,7 @@ echo "configure:1546: checking for platform specific thread flags" >&5
 
     
   echo $ac_n "checking for platform specific multi-threading defines""... $ac_c" 1>&6
-echo "configure:1582: checking for platform specific multi-threading defines" >&5
+echo "configure:1589: checking for platform specific multi-threading defines" >&5
   ac_ext=C
 # CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
 ac_cpp='$CXXCPP $CPPFLAGS'
@@ -1587,7 +1594,7 @@ ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftes
 cross_compiling=$ac_cv_prog_cxx_cross
 
   cat > conftest.$ac_ext <<EOF
-#line 1591 "configure"
+#line 1598 "configure"
 #include "confdefs.h"
 
 #if !defined (_REENTRANT) && !defined (_THREAD_SAFE)
@@ -1601,7 +1608,7 @@ int main() {
    
 ; return 0; }
 EOF
-if { (eval echo configure:1605: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1612: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   
 	echo "$ac_t"""not necessary"" 1>&6
@@ -1646,7 +1653,7 @@ fi
 
 if test "$withmultithreading" != no ; then
   echo $ac_n "checking for ACE""... $ac_c" 1>&6
-echo "configure:1650: checking for ACE" >&5
+echo "configure:1657: checking for ACE" >&5
   if test -d "$withmultithreading" ; then
     echo "$ac_t""found" 1>&6
   else
@@ -1667,7 +1674,7 @@ fi
 if test "$enablemultithreading" = yes ; then
   if test "$GXX" = yes ; then
       echo $ac_n "checking whether compilation with ACE disallows flags""... $ac_c" 1>&6
-echo "configure:1671: checking whether compilation with ACE disallows flags" >&5
+echo "configure:1678: checking whether compilation with ACE disallows flags" >&5
   ac_ext=C
 # CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
 ac_cpp='$CXXCPP $CPPFLAGS'
@@ -1677,7 +1684,7 @@ cross_compiling=$ac_cv_prog_cxx_cross
 
   CXXFLAGS="-ansi -I$withmultithreading"
   cat > conftest.$ac_ext <<EOF
-#line 1681 "configure"
+#line 1688 "configure"
 #include "confdefs.h"
 
 #  include <ace/Thread_Manager.h>
@@ -1687,7 +1694,7 @@ int main() {
 
 ; return 0; }
 EOF
-if { (eval echo configure:1691: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1698: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   
       deal_II_ace_remove_ansi="no"
@@ -1703,7 +1710,7 @@ fi
 rm -f conftest*
   CXXFLAGS="-pedantic -Werror -I$withmultithreading"
   cat > conftest.$ac_ext <<EOF
-#line 1707 "configure"
+#line 1714 "configure"
 #include "confdefs.h"
 
 #  include <ace/Thread_Manager.h>
@@ -1713,7 +1720,7 @@ int main() {
 
 ; return 0; }
 EOF
-if { (eval echo configure:1717: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1724: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   
       deal_II_ace_remove_pedantic="no"
@@ -1800,7 +1807,7 @@ done
 
 
   echo $ac_n "checking whether AssertThrow works with debug flags""... $ac_c" 1>&6
-echo "configure:1804: checking whether AssertThrow works with debug flags" >&5
+echo "configure:1811: checking whether AssertThrow works with debug flags" >&5
   ac_ext=C
 # CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
 ac_cpp='$CXXCPP $CPPFLAGS'
@@ -1810,7 +1817,7 @@ cross_compiling=$ac_cv_prog_cxx_cross
 
   CXXFLAGS=$CXXFLAGSG
   cat > conftest.$ac_ext <<EOF
-#line 1814 "configure"
+#line 1821 "configure"
 #include "confdefs.h"
 
 #include <exception>
@@ -1889,7 +1896,7 @@ int main() {
     
 ; return 0; }
 EOF
-if { (eval echo configure:1893: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1900: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   
 	echo "$ac_t"""yes"" 1>&6
@@ -1906,7 +1913,7 @@ fi
 rm -f conftest*
 
   echo $ac_n "checking whether AssertThrow works with optimized flags""... $ac_c" 1>&6
-echo "configure:1910: checking whether AssertThrow works with optimized flags" >&5
+echo "configure:1917: checking whether AssertThrow works with optimized flags" >&5
   ac_ext=C
 # CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
 ac_cpp='$CXXCPP $CPPFLAGS'
@@ -1916,7 +1923,7 @@ cross_compiling=$ac_cv_prog_cxx_cross
 
   CXXFLAGS=$CXXFLAGSO
   cat > conftest.$ac_ext <<EOF
-#line 1920 "configure"
+#line 1927 "configure"
 #include "confdefs.h"
 
 #include <exception>
@@ -1995,7 +2002,7 @@ int main() {
     
 ; return 0; }
 EOF
-if { (eval echo configure:1999: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2006: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   
 	echo "$ac_t"""yes"" 1>&6
@@ -2013,7 +2020,7 @@ rm -f conftest*
 
 
   echo $ac_n "checking for std::vector bug""... $ac_c" 1>&6
-echo "configure:2017: checking for std::vector bug" >&5
+echo "configure:2024: checking for std::vector bug" >&5
   ac_ext=C
 # CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
 ac_cpp='$CXXCPP $CPPFLAGS'
@@ -2023,7 +2030,7 @@ cross_compiling=$ac_cv_prog_cxx_cross
 
   CXXFLAGS="$CXXFLAGSG"
   cat > conftest.$ac_ext <<EOF
-#line 2027 "configure"
+#line 2034 "configure"
 #include "confdefs.h"
 
       namespace std {
@@ -2043,7 +2050,7 @@ int main() {
 
 ; return 0; }
 EOF
-if { (eval echo configure:2047: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2054: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   
       echo "$ac_t""no" 1>&6
@@ -2064,7 +2071,7 @@ rm -f conftest*
 
 
   echo $ac_n "checking for std::iterator class""... $ac_c" 1>&6
-echo "configure:2068: checking for std::iterator class" >&5
+echo "configure:2075: checking for std::iterator class" >&5
   ac_ext=C
 # CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
 ac_cpp='$CXXCPP $CPPFLAGS'
@@ -2074,7 +2081,7 @@ cross_compiling=$ac_cv_prog_cxx_cross
 
   CXXFLAGS="$CXXFLAGSG"
   cat > conftest.$ac_ext <<EOF
-#line 2078 "configure"
+#line 2085 "configure"
 #include "confdefs.h"
 
 #include <iterator>
@@ -2085,7 +2092,7 @@ int main() {
 
 ; return 0; }
 EOF
-if { (eval echo configure:2089: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2096: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   
       echo "$ac_t""yes" 1>&6
@@ -2105,7 +2112,7 @@ fi
 rm -f conftest*
 
   echo $ac_n "checking for std::i/ostringstream classes""... $ac_c" 1>&6
-echo "configure:2109: checking for std::i/ostringstream classes" >&5
+echo "configure:2116: checking for std::i/ostringstream classes" >&5
   ac_ext=C
 # CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
 ac_cpp='$CXXCPP $CPPFLAGS'
@@ -2115,7 +2122,7 @@ cross_compiling=$ac_cv_prog_cxx_cross
 
   CXXFLAGS="$CXXFLAGSG"
   cat > conftest.$ac_ext <<EOF
-#line 2119 "configure"
+#line 2126 "configure"
 #include "confdefs.h"
 
 #include <sstream>
@@ -2127,7 +2134,7 @@ int main() {
     
 ; return 0; }
 EOF
-if { (eval echo configure:2131: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2138: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   
       echo "$ac_t""yes" 1>&6
@@ -2136,6 +2143,47 @@ if { (eval echo configure:2131: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5;
 EOF
 
     
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  
+      echo "$ac_t""no" 1>&6
+    
+fi
+rm -f conftest*
+
+  echo $ac_n "checking for std::numeric_limits classes""... $ac_c" 1>&6
+echo "configure:2158: checking for std::numeric_limits classes" >&5
+  ac_ext=C
+# CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='${CXX-g++} -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
+ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
+cross_compiling=$ac_cv_prog_cxx_cross
+
+  CXXFLAGS="$CXXFLAGSG"
+  cat > conftest.$ac_ext <<EOF
+#line 2168 "configure"
+#include "confdefs.h"
+
+#include <limits>
+    
+int main() {
+
+	unsigned int i = std::numeric_limits<unsigned int>::eps;
+    
+; return 0; }
+EOF
+if { (eval echo configure:2179: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+  rm -rf conftest*
+  
+      echo "$ac_t""yes" 1>&6
+      cat >> confdefs.h <<\EOF
+#define HAVE_STD_NUMERIC_LIMITS 1
+EOF
+
+    
 else
   echo "configure: failed program was:" >&5
   cat conftest.$ac_ext >&5
@@ -2151,7 +2199,7 @@ rm -f conftest*
 
 
   echo $ac_n "checking whether lrand48 needs to be declared with -ansi""... $ac_c" 1>&6
-echo "configure:2155: checking whether lrand48 needs to be declared with -ansi" >&5
+echo "configure:2203: checking whether lrand48 needs to be declared with -ansi" >&5
   ac_ext=C
 # CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
 ac_cpp='$CXXCPP $CPPFLAGS'
@@ -2161,7 +2209,7 @@ cross_compiling=$ac_cv_prog_cxx_cross
 
   CXXFLAGS="$CXXFLAGSG"
   cat > conftest.$ac_ext <<EOF
-#line 2165 "configure"
+#line 2213 "configure"
 #include "confdefs.h"
 
 #include <vector>
@@ -2177,7 +2225,7 @@ int main() {
 
 ; return 0; }
 EOF
-if { (eval echo configure:2181: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2229: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   
       echo "$ac_t""no" 1>&6
@@ -2198,7 +2246,7 @@ rm -f conftest*
 
 
   echo $ac_n "checking whether getrusage is properly declared""... $ac_c" 1>&6
-echo "configure:2202: checking whether getrusage is properly declared" >&5
+echo "configure:2250: checking whether getrusage is properly declared" >&5
   ac_ext=C
 # CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
 ac_cpp='$CXXCPP $CPPFLAGS'
@@ -2207,7 +2255,7 @@ ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftes
 cross_compiling=$ac_cv_prog_cxx_cross
 
   cat > conftest.$ac_ext <<EOF
-#line 2211 "configure"
+#line 2259 "configure"
 #include "confdefs.h"
 
 #include <sys/resource.h>
@@ -2219,7 +2267,7 @@ int main() {
     
 ; return 0; }
 EOF
-if { (eval echo configure:2223: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2271: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   
 	echo "$ac_t"""yes"" 1>&6
@@ -2237,7 +2285,7 @@ fi
 rm -f conftest*
 
     echo $ac_n "checking whether isnan is declared with debug flags""... $ac_c" 1>&6
-echo "configure:2241: checking whether isnan is declared with debug flags" >&5
+echo "configure:2289: checking whether isnan is declared with debug flags" >&5
   ac_ext=C
 # CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
 ac_cpp='$CXXCPP $CPPFLAGS'
@@ -2248,7 +2296,7 @@ cross_compiling=$ac_cv_prog_cxx_cross
   CXXFLAGS=$CXXFLAGSG
   deal_II_isnan_flag=""
   cat > conftest.$ac_ext <<EOF
-#line 2252 "configure"
+#line 2300 "configure"
 #include "confdefs.h"
 
 #include <cmath>
@@ -2260,7 +2308,7 @@ int main() {
     
 ; return 0; }
 EOF
-if { (eval echo configure:2264: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2312: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   
 	echo "$ac_t"""yes"" 1>&6
@@ -2276,7 +2324,7 @@ rm -f conftest*
 
   if test "x$deal_II_isnan_flag" = "x" ; then
             cat > conftest.$ac_ext <<EOF
-#line 2280 "configure"
+#line 2328 "configure"
 #include "confdefs.h"
 
 #include <cmath>
@@ -2288,7 +2336,7 @@ int main() {
       
 ; return 0; }
 EOF
-if { (eval echo configure:2292: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2340: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   
 	  echo "$ac_t"""yes"" 1>&6
@@ -2308,7 +2356,7 @@ rm -f conftest*
     for testflag in -D_ISOC99_SOURCE -D__EXTENSIONS__ ; do 
       CXXFLAGS="$CXXFLAGSG $testflag"
       cat > conftest.$ac_ext <<EOF
-#line 2312 "configure"
+#line 2360 "configure"
 #include "confdefs.h"
 
 #include <cmath>
@@ -2320,7 +2368,7 @@ int main() {
 	
 ; return 0; }
 EOF
-if { (eval echo configure:2324: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2372: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   
 	  	  	  deal_II_isnan_flag="-DHAVE_ISNAN $testflag"
@@ -2333,7 +2381,7 @@ fi
 rm -f conftest*
 
                         cat > conftest.$ac_ext <<EOF
-#line 2337 "configure"
+#line 2385 "configure"
 #include "confdefs.h"
 
 #include <cmath>
@@ -2345,7 +2393,7 @@ int main() {
 	
 ; return 0; }
 EOF
-if { (eval echo configure:2349: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2397: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   
 	  	  	  deal_II_isnan_flag="-DHAVE_UNDERSCORE_ISNAN $testflag"
@@ -2367,7 +2415,7 @@ rm -f conftest*
   fi
 
     echo $ac_n "checking whether isnan is declared with optimized flags""... $ac_c" 1>&6
-echo "configure:2371: checking whether isnan is declared with optimized flags" >&5
+echo "configure:2419: checking whether isnan is declared with optimized flags" >&5
   ac_ext=C
 # CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
 ac_cpp='$CXXCPP $CPPFLAGS'
@@ -2378,7 +2426,7 @@ cross_compiling=$ac_cv_prog_cxx_cross
   CXXFLAGS=$CXXFLAGSO
   deal_II_isnan_flag=""
   cat > conftest.$ac_ext <<EOF
-#line 2382 "configure"
+#line 2430 "configure"
 #include "confdefs.h"
 
 #include <cmath>
@@ -2390,7 +2438,7 @@ int main() {
     
 ; return 0; }
 EOF
-if { (eval echo configure:2394: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2442: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   
 	echo "$ac_t"""yes"" 1>&6
@@ -2406,7 +2454,7 @@ rm -f conftest*
 
   if test "x$deal_II_isnan_flag" = "x" ; then
             cat > conftest.$ac_ext <<EOF
-#line 2410 "configure"
+#line 2458 "configure"
 #include "confdefs.h"
 
 #include <cmath>
@@ -2418,7 +2466,7 @@ int main() {
       
 ; return 0; }
 EOF
-if { (eval echo configure:2422: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2470: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   
 	  echo "$ac_t"""yes"" 1>&6
@@ -2438,7 +2486,7 @@ rm -f conftest*
     for testflag in -D_ISOC99_SOURCE -D__EXTENSIONS__ ; do 
       CXXFLAGS="$CXXFLAGSO $testflag"
       cat > conftest.$ac_ext <<EOF
-#line 2442 "configure"
+#line 2490 "configure"
 #include "confdefs.h"
 
 #include <cmath>
@@ -2450,7 +2498,7 @@ int main() {
 	
 ; return 0; }
 EOF
-if { (eval echo configure:2454: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2502: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   
 	  	  	  deal_II_isnan_flag="-DHAVE_ISNAN $testflag"
@@ -2463,7 +2511,7 @@ fi
 rm -f conftest*
 
                         cat > conftest.$ac_ext <<EOF
-#line 2467 "configure"
+#line 2515 "configure"
 #include "confdefs.h"
 
 #include <cmath>
@@ -2475,7 +2523,7 @@ int main() {
 	
 ; return 0; }
 EOF
-if { (eval echo configure:2479: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2527: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   
 	  	  	  deal_II_isnan_flag="-DHAVE_UNDERSCORE_ISNAN $testflag"
@@ -2506,9 +2554,9 @@ cross_compiling=$ac_cv_prog_cxx_cross
 
   CXXFLAGS=$CXXFLAGSG
   echo $ac_n "checking for rand_r""... $ac_c" 1>&6
-echo "configure:2510: checking for rand_r" >&5
+echo "configure:2558: checking for rand_r" >&5
   cat > conftest.$ac_ext <<EOF
-#line 2512 "configure"
+#line 2560 "configure"
 #include "confdefs.h"
 
 #include <cstdlib>
@@ -2520,7 +2568,7 @@ int i=rand_r(&i);
 	
 ; return 0; }
 EOF
-if { (eval echo configure:2524: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2572: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   
 	  echo "$ac_t""found" 1>&6
@@ -2543,12 +2591,12 @@ rm -f conftest*
 for ac_func in gethostname
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:2547: checking for $ac_func" >&5
+echo "configure:2595: 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 2552 "configure"
+#line 2600 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -2574,7 +2622,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:2578: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2626: \"$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
@@ -2603,7 +2651,7 @@ done
 # Extract the first word of "f77", so it can be a program name with args.
 set dummy f77; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:2607: checking for $ac_word" >&5
+echo "configure:2655: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_path_F77'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2639,7 +2687,7 @@ if test "x$F77" = "x" ; then
         # Extract the first word of "g77", so it can be a program name with args.
 set dummy g77; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:2643: checking for $ac_word" >&5
+echo "configure:2691: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_path_F77'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2790,7 +2838,7 @@ fi
 # Extract the first word of "perl", so it can be a program name with args.
 set dummy perl; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:2794: checking for $ac_word" >&5
+echo "configure:2842: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_path_PERL'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2828,7 +2876,7 @@ fi
 
 
 echo $ac_n "checking for HSL subroutines""... $ac_c" 1>&6
-echo "configure:2832: checking for HSL subroutines" >&5
+echo "configure:2880: checking for HSL subroutines" >&5
 hsl_subroutines=""
 if test -r contrib/hsl/source/ma27.f ; then
   hsl_subroutines="$hsl_subroutines MA27"
@@ -2893,7 +2941,7 @@ else
 fi
 
 echo $ac_n "checking for kdoc""... $ac_c" 1>&6
-echo "configure:2897: checking for kdoc" >&5
+echo "configure:2945: checking for kdoc" >&5
 if test "$kdocdir" != ${DEAL2_DIR}/contrib/kdoc/bin ; then
   if test -r $kdocdir/kdoc ; then
     echo "$ac_t""found" 1>&6
@@ -2929,7 +2977,7 @@ if test "$docxx" = to-be-determined ; then
   # Extract the first word of ""doc++"", so it can be a program name with args.
 set dummy "doc++"; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:2933: checking for $ac_word" >&5
+echo "configure:2981: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_path_docxx'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2963,7 +3011,7 @@ fi
 
 else
   echo $ac_n "checking for doc++""... $ac_c" 1>&6
-echo "configure:2967: checking for doc++" >&5
+echo "configure:3015: checking for doc++" >&5
   if test -x "$docxx" ; then
     echo "$ac_t""yes" 1>&6
   else
@@ -2986,16 +3034,16 @@ cross_compiling=$ac_cv_prog_cxx_cross
 
 CXXFLAGS="$CXXFLAGSG"
 echo $ac_n "checking for consistency of CXXFLAGSG flags""... $ac_c" 1>&6
-echo "configure:2990: checking for consistency of CXXFLAGSG flags" >&5
+echo "configure:3038: checking for consistency of CXXFLAGSG flags" >&5
 cat > conftest.$ac_ext <<EOF
-#line 2992 "configure"
+#line 3040 "configure"
 #include "confdefs.h"
 
 int main() {
 ;
 ; return 0; }
 EOF
-if { (eval echo configure:2999: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3047: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   
     echo "$ac_t""yes" 1>&6
@@ -3013,16 +3061,16 @@ rm -f conftest*
 
 CXXFLAGS="$CXXFLAGSO"
 echo $ac_n "checking for consistency of CXXFLAGSO flags""... $ac_c" 1>&6
-echo "configure:3017: checking for consistency of CXXFLAGSO flags" >&5
+echo "configure:3065: checking for consistency of CXXFLAGSO flags" >&5
 cat > conftest.$ac_ext <<EOF
-#line 3019 "configure"
+#line 3067 "configure"
 #include "confdefs.h"
 
 int main() {
 ;
 ; return 0; }
 EOF
-if { (eval echo configure:3026: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3074: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   
     echo "$ac_t""yes" 1>&6
diff --git a/deal.II/configure.in b/deal.II/configure.in
index a6ce7247ef..6e2fe2e194 100644
--- a/deal.II/configure.in
+++ b/deal.II/configure.in
@@ -653,9 +653,11 @@ dnl IBM's xlC compiler has a problem with some kind of code that does not
 dnl "using namespace std;" Try to work around if necessary
 DEAL_II_CHECK_IBM_XLC_ERROR
 
-dnl See whether we can use the std::iterator and std::stringstream classes
+dnl See whether we can use the std::iterator, std::stringstream, 
+dnl and std::numeric_limits classes
 DEAL_II_HAVE_STD_ITERATOR
 DEAL_II_HAVE_STD_STRINGSTREAM
+DEAL_II_HAVE_STD_NUMERIC_LIMITS