+$define|true|[yY]*)
+ case "`/usr/sbin/sizer -v`" in
+ *[1-4].0*) cat >&4 <<EOF
+
+***
+*** Sorry, you cannot use long doubles in pre-V5.0 releases of Tru64.
+***
+
+Cannot continue, aborting.
+
+EOF
+ exit 1
+ ;;
+ *)
+ # Test whether libc's been fixed yet.
+ cat >try.c <<\TRY
+#include <stdio.h>
+int main(int argc, char **argv)
+{
+ unsigned long uvmax = ~0UL;
+ long double ld = uvmax + 0.0L;
+ char buf1[30], buf2[30];
+
+ (void) sprintf(buf1, "%lu", uvmax);
+ (void) sprintf(buf2, "%.0Lf", ld);
+ return strcmp(buf1, buf2) != 0;
+}
+TRY
+ # Don't bother trying to work with Configure's idea of
+ # cc and the various flags. This might not work as-is
+ # with gcc -- but we're testing libc, not the compiler.
+ if cc -o try -std try.c && ./try
+ then
+ : ok
+ else
+ cat <<\UGLY >&4
+!
+Warning! Your libc has not yet been patched so that its "%Lf" format for
+printing long doubles shows all the significant digits. You will get errors
+in the t/op/numconvert test because of this. (The data is still good
+internally, and the "%e" format of printf() or sprintf() in perl will still
+produce valid results.) See README.tru64 for additional details.
+
+Continuing anyway.
+!
+UGLY
+ fi
+ $rm -f try try.c
+ esac
+ ;;