remove OSF1 support

cde/programs/dtcalc/calctool.h

@@ -39,13 +39,6 @@
 #include <Dt/UserMsg.h>
 #include <Dt/DtNlUtils.h>
 
-#ifdef __osf__
-/* Undefine DEC so the enum value DEC works */
-#ifdef DEC
-#undef DEC
-#endif /* DEC */
-#endif /* __osf__ */
- 
 #ifdef XGETTEXT
 #define  MSGFILE_LABEL    "dtcalc.label"
 #define  MSGFILE_MESSAGE  "dtcalc.message"

cde/programs/dtcalc/functions.c

@@ -1729,13 +1729,13 @@ do_round(double result, int ndigits)
     int temp;
 
     if (isnan(result)) return result;
-#if defined(_AIX) || defined(__aix) || defined(__osf__) || defined(__sparc)
+#if defined(_AIX) || defined(__aix) || defined(__sparc)
     temp = finite(result);
     if (!temp)
        return (temp > 0) ? HUGE : -HUGE;
 #else
     if ((temp = isinf(result))) return (temp > 0) ? HUGE : -HUGE;
-#endif /* _AIX or __osf__ */
+#endif /* _AIX or sparc*/
 
     if (ndigits >= 0 && ndigits < MAX_DIGITS)
     {
@@ -1843,13 +1843,13 @@ try_compute_i(double guess, double *result, int method)
 
 	new_w = w - f / f_prime;
 
-#if defined(_AIX) || defined(__aix) || defined (__osf__) || defined(__sparc)
+#if defined(_AIX) || defined(__aix) || defined(__sparc)
 	if (!(!isnan(new_w) && finite(new_w)))
 	    return FALSE;
 #else
 	if (!(!isnan(new_w) && !isinf(new_w)))
 	    return FALSE;
-#endif /* _AIX or __osf__ */
+#endif /* _AIX or sparc */
 
 	if (new_w == w || (w != 0.0 && fabs((new_w - w) / w) < FIN_EPSILON))
            break;

cde/programs/dtcalc/motif.c

@@ -286,9 +286,6 @@ main(int argc, char **argv)
   XtSetLanguageProc(NULL, NULL, NULL);
   _DtEnvControl(DT_ENV_SET);
   signal (SIGHUP, SIG_IGN);
-#ifdef __osf__
-  signal (SIGFPE, SIG_IGN);
-#endif /* __osf__ */
 
   X       = (XVars) LINT_CAST(calloc(1, sizeof(XObject))) ;
   X->home = getenv("HOME") ;