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address rounding errors in fee calculation

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Daniel Larimer 2015-10-01 16:32:30 -04:00
parent 3bce5de0d5
commit 1137120aa2
1 changed files with 6 additions and 0 deletions
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6
libraries/chain/protocol/fee_schedule.cpp
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@ -104,7 +104,13 @@ namespace graphene { namespace chain {
auto scaled = fc::uint128(base_value) * scale; auto scaled = fc::uint128(base_value) * scale;
scaled /= GRAPHENE_100_PERCENT; scaled /= GRAPHENE_100_PERCENT;
FC_ASSERT( scaled <= GRAPHENE_MAX_SHARE_SUPPLY ); FC_ASSERT( scaled <= GRAPHENE_MAX_SHARE_SUPPLY );
//idump( (base_value)(scaled)(core_exchange_rate) );
auto result = asset( scaled.to_uint64(), 0 ) * core_exchange_rate; auto result = asset( scaled.to_uint64(), 0 ) * core_exchange_rate;
//FC_ASSERT( result * core_exchange_rate >= asset( scaled.to_uint64()) );
while( result * core_exchange_rate < asset( scaled.to_uint64()) )
result.amount++;
FC_ASSERT( result.amount <= GRAPHENE_MAX_SHARE_SUPPLY ); FC_ASSERT( result.amount <= GRAPHENE_MAX_SHARE_SUPPLY );
return result; return result;
} }