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AC_DEFUN([AC_CXX_HAVE_VALARRAY],
[AC_CACHE_CHECK(whether C++ compiler has working valarray<T>,
ac_cv_cxx_have_valarray,
[AC_REQUIRE([AC_CXX_NAMESPACES])
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
AC_TRY_COMPILE([#include <valarray>
#ifdef HAVE_NAMESPACES
using namespace std;
#endif],[valarray<float> x(100); return 0;],
ac_cv_cxx_have_valarray=yes, ac_cv_cxx_have_valarray=no)
AC_LANG_RESTORE
])
if test "$ac_cv_cxx_have_valarray" = yes; then
AC_DEFINE(HAVE_VALARRAY,,[Define if C++ compiler has working valarray<T>])
fi
])
AC_DEFUN([AC_CXX_NAMESPACES],
[AC_CACHE_CHECK(whether C++ compiler implements namespaces,
ac_cv_cxx_namespaces,
[AC_LANG_SAVE
AC_LANG_CPLUSPLUS
AC_TRY_COMPILE([namespace Outer { namespace Inner { int i = 0; }}],
[using namespace Outer::Inner; return i;],
ac_cv_cxx_namespaces=yes, ac_cv_cxx_namespaces=no)
AC_LANG_RESTORE
])
if test "$ac_cv_cxx_namespaces" = yes; then
AC_DEFINE(HAVE_NAMESPACES,,[Define if C++ compiler implements namespaces])
fi
])
AC_DEFUN([NCO_CHECK_FUNCS],
[AC_FOREACH([AC_Func],[$1],
[AH_TEMPLATE(AS_TR_CPP(HAVE_[]AC_Func),dnl
[Define to 1 if compiler finds external `]AC_Func[' function])
AH_TEMPLATE(AS_TR_CPP(NEED_[]AC_Func),dnl
[Define to 1 if compiler needs external `]AC_Func[' function])
])dnl
for ac_func in $1
do
AC_CHECK_FUNC($ac_func,
[AC_DEFINE_UNQUOTED([AS_TR_CPP([HAVE_$ac_func])])],
[AC_DEFINE_UNQUOTED([AS_TR_CPP([NEED_$ac_func])])])dnl
done
])
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