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also detect 0/0

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This commit is contained in:
ceriel 1988-08-05 11:40:29 +00:00
parent 905c5a349f
commit 05bac6c619
1 changed files with 9 additions and 9 deletions
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18
mach/proto/fp/div_ext.c
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@ -31,6 +31,15 @@ EXTEND *e1,*e2;
unsigned long result[2]; unsigned long result[2];
register unsigned long *lp; 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 */ if ((e1->m1 | e1->m2) == 0) { /* 0 / anything == 0 */
e1->exp = 0; /* make sure */ e1->exp = 0; /* make sure */
return; return;
@ -57,15 +66,6 @@ EXTEND *e1,*e2;
e1->m1 = e1->m2 = 0L; e1->m1 = e1->m2 = 0L;
return; 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) { if (e1->exp >= EXT_MAX) {
/* /*
* Exception 8.3 - Overflow * Exception 8.3 - Overflow