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-rw-r--r--src/arith_uint256.cpp8
1 files changed, 4 insertions, 4 deletions
diff --git a/src/arith_uint256.cpp b/src/arith_uint256.cpp
index 65de632306..c7ddb17eb0 100644
--- a/src/arith_uint256.cpp
+++ b/src/arith_uint256.cpp
@@ -69,16 +69,16 @@ base_uint<BITS>& base_uint<BITS>::operator*=(uint32_t b32)
template <unsigned int BITS>
base_uint<BITS>& base_uint<BITS>::operator*=(const base_uint& b)
{
- base_uint<BITS> a = *this;
- *this = 0;
+ base_uint<BITS> a;
for (int j = 0; j < WIDTH; j++) {
uint64_t carry = 0;
for (int i = 0; i + j < WIDTH; i++) {
- uint64_t n = carry + pn[i + j] + (uint64_t)a.pn[j] * b.pn[i];
- pn[i + j] = n & 0xffffffff;
+ uint64_t n = carry + a.pn[i + j] + (uint64_t)pn[j] * b.pn[i];
+ a.pn[i + j] = n & 0xffffffff;
carry = n >> 32;
}
}
+ *this = a;
return *this;
}