Function IsValidAddition

src/test/fuzz/scriptnum_ops.cpp:16–19

namespace {
bool IsValidAddition(const CScriptNum& lhs, const CScriptNum& rhs)
{
    return rhs == 0 || (rhs > 0 && lhs <= CScriptNum{std::numeric_limits<int64_t>::max()} - rhs) || (rhs < 0 && lhs >= CScriptNum{std::numeric_limits<int64_t>::min()} - rhs);
}

bool IsValidSubtraction(const CScriptNum& lhs, const CScriptNum& rhs)
{