*** local.h.old	Sun Nov  5 00:45:10 1995
--- local.h	Mon Oct 30 19:08:16 1995
***************
*** 89,91 ****
  
! #if defined(sgi) || (defined(sun) && defined(__svr4__))
  #define isinf(x) (!finite(x) && !isnan(x))
--- 89,91 ----
  
! #if defined(sgi) || defined(ultrix) || (defined(sun) && defined(__svr4__))
  #define isinf(x) (!finite(x) && !isnan(x))