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did not handle -0.0 right

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This commit is contained in:
ceriel 1989-08-15 09:04:49 +00:00
parent 650c178631
commit 04dcaf5685
5 changed files with 25 additions and 7 deletions
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5
mach/proto/fp/cmf4.c
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@ -30,8 +30,11 @@ _float f1,f2;
sign1 = SIGN(l1); sign1 = SIGN(l1);
sign2 = SIGN(l2); sign2 = SIGN(l2);
if (sign1 != sign2) if (sign1 != sign2) {
if ((l1 & 0x7fffffff) == 0 &&
(l2 & 0x7fffffff) == 0) return 0;
return ((sign1 > 0) ? -1 : 1); return ((sign1 > 0) ? -1 : 1);
}
return (sign1 * ((l1 < l2) ? 1 : -1)); return (sign1 * ((l1 < l2) ? 1 : -1));
} }

6
mach/proto/fp/cmf8.c
View file

@ -28,7 +28,11 @@ _double d1,d2;
sign1 = SIGN(l1); sign1 = SIGN(l1);
sign2 = SIGN(l2); sign2 = SIGN(l2);
if (sign1 != sign2) { if (sign1 != sign2) {
return ((sign1 > 0) ? -1 : 1); l1 &= 0x7fffffff;
l2 &= 0x7fffffff;
if (l1 != 0 || l2 != 0) {
return ((sign1 > 0) ? -1 : 1);
}
} }
if (l1 != l2) { /* we can decide here */ if (l1 != l2) { /* we can decide here */
rv = l1 < l2 ? 1 : -1; rv = l1 < l2 ? 1 : -1;

3
mach/proto/fp/extend.c
View file

@ -42,7 +42,8 @@ int size;
int leadbit = 0; int leadbit = 0;
cpt1 = (char *) from; cpt1 = (char *) from;
if (((DOUBLE *) cpt1)->_s.p1.fract == 0L) { if (((DOUBLE *) cpt1)->_s.p1.fract == 0L ||
((DOUBLE *) cpt1)->_s.p1.fract == 0x80000000) {
if (size == sizeof(SINGLE)) { if (size == sizeof(SINGLE)) {
zero: zrf_ext(to); zero: zrf_ext(to);
return; return;

9
mach/proto/fp/fef4.c
View file

@ -26,7 +26,12 @@ struct fef4_returns *r;
*/ */
extend((_double *) &s1,&buf,sizeof(_float)); extend((_double *) &s1,&buf,sizeof(_float));
p->e = buf.exp+1; if (buf.exp == 0 && buf.m1 == 0 && buf.m2 == 0) {
buf.exp = -1; p->e = 0;
}
else {
p->e = buf.exp+1;
buf.exp = -1;
}
compact(&buf,(_double *) &p->f,sizeof(_float)); compact(&buf,(_double *) &p->f,sizeof(_float));
} }

9
mach/proto/fp/fef8.c
View file

@ -26,7 +26,12 @@ struct fef8_returns *r;
*/ */
extend(&s1,&buf,sizeof(_double)); extend(&s1,&buf,sizeof(_double));
p->e = buf.exp + 1; if (buf.exp == 0 && buf.m1 == 0 && buf.m2 == 0) {
buf.exp = -1; p->e = 0;
}
else {
p->e = buf.exp + 1;
buf.exp = -1;
}
compact(&buf,&p->f,sizeof(_double)); compact(&buf,&p->f,sizeof(_double));
} }