also detect 0/0

diff --git a/mach/proto/fp/div_ext.c b/mach/proto/fp/div_ext.c
index 883bd54..447fdd1 100644 (file)
--- a/mach/proto/fp/div_ext.c
+++ b/mach/proto/fp/div_ext.c
@@ -31,6 +31,15 @@ EXTEND       *e1,*e2;
                        unsigned long   result[2];
        register        unsigned long   *lp;
 
+       if ((e2->m1 | e2->m2) == 0) {
+                /*
+                 * Exception 8.2 - Divide by zero
+                 */
+               trap(EFDIVZ);
+               e1->m1 = e1->m2 = 0L;
+               e1->exp = EXT_MAX;
+               return;
+       }
        if ((e1->m1 | e1->m2) == 0) {   /* 0 / anything == 0 */
                e1->exp = 0;    /* make sure */
                return;
@@ -57,15 +66,6 @@ EXTEND       *e1,*e2;
                e1->m1 = e1->m2 = 0L;
                return;
        }
-       if ((e2->m1 | e2->m2) == 0) {
-                /*
-                 * Exception 8.2 - Divide by zero
-                 */
-               trap(EFDIVZ);
-               e1->m1 = e1->m2 = 0L;
-               e1->exp = EXT_MAX;
-               return;
-       }
        if (e1->exp >= EXT_MAX) {
                 /*
                  * Exception 8.3 - Overflow