Re: Undefined identifiers for alphaev6-dec-osf4.0e

[Tim Mooney <mooney at dogbert dot cc dot ndsu dot nodak dot edu>]

In regard to: Re: Undefined identifiers for alphaev6-dec-osf4.0e, Brian...:

>Sounds good. We'll wait for the patch.
>

This seems to do it.  It's against yesterday's CVS.


Index: acconfig.h
===================================================================
RCS file: /cvs/gsl/gsl/acconfig.h,v
retrieving revision 1.14
diff -u -r1.14 acconfig.h
--- acconfig.h	2000/02/19 13:54:34	1.14
+++ acconfig.h	2000/02/24 05:18:13
@@ -32,5 +32,8 @@
 #undef HAVE_IRIX_IEEE_INTERFACE
 #undef HAVE_AIX_IEEE_INTERFACE
 
+/* Define this if your version of Tru64 Unix has IEEE_TRAP_ENABLE_DNO */
+#undef HAVE_TRU64_IEEE_TRAP_ENABLE_DNO
+
 /* Define this if printf can handle %Lf for long double */
 #undef HAVE_PRINTF_LONGDOUBLE
Index: configure.in
===================================================================
RCS file: /cvs/gsl/gsl/configure.in,v
retrieving revision 1.86
diff -u -r1.86 configure.in
--- configure.in	2000/02/23 19:21:25	1.86
+++ configure.in	2000/02/24 05:18:13
@@ -152,6 +152,21 @@
     *-*-osf*) 
         AC_DEFINE(HAVE_TRU64_IEEE_INTERFACE)
         AC_MSG_RESULT([osf/tru64]) 
+		dnl
+		dnl Some versions of the OS formerly known as Digital Unix
+		dnl don't have the mask for IEEE_TRAP_ENABLE_DNO.  We could
+		dnl AC_EGREP_HEADER, but this works.  Note that no special
+		dnl compiler flags (possibly determined below) are required,
+		dnl so we can do this right here.
+		AC_MSG_CHECKING([for Tru64's IEEE_TRAP_ENABLE_DNO mask])
+		AC_TRY_COMPILE(
+[#include <float.h>
+#include <machine/fpu.h>
+],			[ long foo = IEEE_TRAP_ENABLE_DNO; ],
+			[AC_DEFINE(HAVE_TRU64_IEEE_TRAP_ENABLE_DNO)
+			AC_MSG_RESULT([yes])
+			],AC_MSG_RESULT([no])
+		) dnl here ends the AC_TRY_COMPILE
         ;;
     *-*-aix*) 
         AC_DEFINE(HAVE_AIX_IEEE_INTERFACE)
@@ -243,7 +258,6 @@
 esac
 # Now restore our (possibly augmented) CFLAGS.
 CFLAGS="$save_cflags"
-
 
 dnl AC_ARG_ENABLE(exceptions,[exceptions],AC_PROG_CXX)
 
Index: ieee-utils/fp-tru64.c
===================================================================
RCS file: /cvs/gsl/gsl/ieee-utils/fp-tru64.c,v
retrieving revision 1.3
diff -u -r1.3 fp-tru64.c
--- fp-tru64.c	2000/02/17 02:33:43	1.3
+++ fp-tru64.c	2000/02/24 05:18:13
@@ -86,6 +86,8 @@
    * IEEE_TRAP_ENABLE_UNF	->	Underflow
    * IEEE_TRAP_ENABLE_INE	->	Inexact (requires special option to C compiler)
    * IEEE_TRAP_ENABLE_DNO	->	denormal operand
+   * Note: IEEE_TRAP_ENABLE_DNO is not supported on OSF 3.x or Digital Unix
+   * 4.0 - 4.0d(?).
    * IEEE_TRAP_ENABLE_MASK	->	mask of all the trap enables
    * IEEE_MAP_DMZ			->	map denormal inputs to zero
    * IEEE_MAP_UMZ			->	map underflow results to zero
@@ -97,8 +99,13 @@
   if (exception_mask & GSL_IEEE_MASK_INVALID)
     mode &= ~ IEEE_TRAP_ENABLE_INV ;
 
-  if (exception_mask & GSL_IEEE_MASK_DENORMALIZED)
+  if (exception_mask & GSL_IEEE_MASK_DENORMALIZED) {
+#ifdef HAVE_TRU64_IEEE_TRAP_ENABLE_DNO
     mode &= ~ IEEE_TRAP_ENABLE_DNO ;
+#else
+	GSL_ERROR ("Sorry, this version of Digital Unix does not support denormalized operands", GSL_EUNSUP) ;
+#endif
+  }
 
   if (exception_mask & GSL_IEEE_MASK_DIVISION_BY_ZERO)
     mode &= ~ IEEE_TRAP_ENABLE_DZE ;




>Tim Mooney writes:
> > 
> > Unless someone else is anxious to tackle this, I'll add a test to detect
> > this problem and submit a patch.  I'll be gone for more than a week starting
> > this coming weekend, so if I don't get it done before Saturday (not likely,
> > at this point) it may be 2 or 3 weeks before I get to it.
>

-- 
Tim Mooney                              mooney@dogbert.cc.ndsu.NoDak.edu
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