--- gplt_x11.c.ORIG	Thu Dec  2 17:02:05 1999
+++ gplt_x11.c	Thu Dec  2 17:02:54 1999
@@ -169,6 +169,10 @@
 # define EINTR	E_ILLFNC
 #endif
 
+#ifdef __FreeBSD__
+# include <floatingpoint.h>
+#endif
+
 /* information about one window/plot */
 
 typedef struct plot_struct {
@@ -301,6 +305,10 @@
 int argc;
 char *argv[];
 {
+#ifdef __FreeBSD__
+  /* allow divide by zero -- Inf */
+  fpsetmask(fpgetmask() & ~(FP_X_DZ | FP_X_INV));
+#endif
 
 #ifndef X11ORG
    setlocale(LC_ALL, "");
@@ -335,6 +343,12 @@
 	}
     }
     XCloseDisplay(dpy);
+
+#ifdef __FreeBSD__
+  fpresetsticky(FP_X_DZ | FP_X_INV);
+  fpsetmask(fpgetmask() | (FP_X_DZ | FP_X_INV));
+#endif
+
 
     FPRINTF((stderr, "exiting\n"));
 
--- plot.c.ORIG	Thu Dec  2 17:02:05 1999
+++ plot.c	Thu Dec  2 17:02:54 1999
@@ -73,6 +73,10 @@
 # endif
 #endif /* _Windows */
 
+#ifdef __FreeBSD__
+# include <floatingpoint.h>
+#endif
+
 extern FILE *gpoutfile;
 
 TBOOLEAN interactive = TRUE;	/* FALSE if stdin not a terminal */
@@ -347,6 +351,11 @@
     _control87(MCW_EM, MCW_EM);
 #endif
 
+#ifdef __FreeBSD__
+  /* allow divide by zero -- Inf */
+  fpsetmask(fpgetmask() & ~(FP_X_DZ | FP_X_INV));
+#endif
+
 #if defined(OS2)
     int rc;
     if (_osmode == OS2_MODE) {
@@ -565,6 +574,11 @@
 #ifdef OS2
     if (_osmode == OS2_MODE)
 	RexxDeregisterSubcom("GNUPLOT", NULL);
+#endif
+
+#ifdef __FreeBSD__
+  fpresetsticky(FP_X_DZ | FP_X_INV);
+  fpsetmask(fpgetmask() | (FP_X_DZ | FP_X_INV));
 #endif
 
 #if defined(ATARI) || defined(MTOS)