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math/mp-gcd.c: Avoid clobbering constants during the sign fixup.
[catacomb]
/
math
/
mp-gcd.c
diff --git
a/math/mp-gcd.c
b/math/mp-gcd.c
index
6e059e3
..
c36689c
100644
(file)
--- a/
math/mp-gcd.c
+++ b/
math/mp-gcd.c
@@
-199,10
+199,8
@@
void mp_gcd(mp **gcd, mp **xx, mp **yy, mp *a, mp *b)
/* --- Twiddle the signs --- */
- if (f & f_aneg)
- x->f ^= MP_NEG;
- if (f & f_bneg)
- y->f ^= MP_NEG;
+ if (f & f_aneg) { MP_SPLIT(x); x->f ^= MP_NEG; }
+ if (f & f_bneg) { MP_SPLIT(y); y->f ^= MP_NEG; }
/* --- Store the results --- */