AC_DEFUN([AX_CHECK_SIGN], [
typename=`echo $1 | sed "s/@<:@^a-zA-Z0-9_@:>@/_/g"`
AC_CACHE_CHECK([whether $1 is signed], ax_cv_decl_${typename}_signed, [
AC_DEFUN([AX_CHECK_SIGN], [
typename=`echo $1 | sed "s/@<:@^a-zA-Z0-9_@:>@/_/g"`
AC_CACHE_CHECK([whether $1 is signed], ax_cv_decl_${typename}_signed, [