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feat(big): add Add

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fallenoak 2023-01-31 22:17:51 -06:00
parent b2cbc02189
commit aad7f751dd
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3 changed files with 79 additions and 0 deletions
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11
storm/big/Ops.cpp
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@ -1,5 +1,16 @@
#include "storm/big/Ops.hpp"
void Add(BigBuffer& a, const BigBuffer& b, uint32_t c) {
uint64_t carry = c;
uint32_t i = 0;
for (i = 0; carry || b.IsUsed(i); i++) {
carry += b[i];
a[i] = ExtractLowPart(carry);
}
a.SetCount(i);
}
void Add(BigBuffer& a, const BigBuffer& b, const BigBuffer& c) {
uint64_t carry = 0;
uint32_t i = 0;

2
storm/big/Ops.hpp
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@ -5,6 +5,8 @@
#include "storm/big/BigStack.hpp"
#include <cstdint>
void Add(BigBuffer& a, const BigBuffer& b, uint32_t c);
void Add(BigBuffer& a, const BigBuffer& b, const BigBuffer& c);
uint32_t ExtractLowPart(uint64_t& value);