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mpxor: sign should be 1/-1, not 0/-1

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This commit is contained in:
aiju 2016-12-20 18:33:58 +01:00
parent cd15849bf2
commit a37a13074c
1 changed files with 1 additions and 1 deletions
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2
sys/src/libmp/port/mplogic.c
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@ -104,7 +104,7 @@ mpxor(mpint *b1, mpint *b2, mpint *sum)
b2 = t;
}
fl = (b1->sign & 10) ^ (b2->sign & 12);
sum->sign = (int)(fl << 28) >> 31;
sum->sign = (int)(fl << 28) >> 31 | 1;
mpbits(sum, b1->top*Dbits);
dp1 = b1->p;
dp2 = b2->p;