core: quantize per kB fee to 8 decimals
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3e761c137d
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@ -128,6 +128,7 @@
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#define THREAD_STACK_SIZE 5 * 1024 * 1024
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#define HF_VERSION_DYNAMIC_FEE 4
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#define PER_KB_FEE_QUANTIZATION_DECIMALS 8
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// New constants are intended to go here
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namespace config
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@ -2795,6 +2795,19 @@ void Blockchain::check_ring_signature(const crypto::hash &tx_prefix_hash, const
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result = crypto::check_ring_signature(tx_prefix_hash, key_image, p_output_keys, sig.data()) ? 1 : 0;
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}
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//------------------------------------------------------------------
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static uint64_t get_fee_quantization_mask()
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{
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static uint64_t mask = 0;
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if (mask == 0)
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{
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mask = 1;
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for (size_t n = PER_KB_FEE_QUANTIZATION_DECIMALS; n < CRYPTONOTE_DISPLAY_DECIMAL_POINT; ++n)
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mask *= 10;
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}
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return mask;
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}
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//------------------------------------------------------------------
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uint64_t Blockchain::get_dynamic_per_kb_fee(uint64_t block_reward, size_t median_block_size)
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{
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@ -2810,7 +2823,12 @@ uint64_t Blockchain::get_dynamic_per_kb_fee(uint64_t block_reward, size_t median
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div128_32(hi, lo, 1000000, &hi, &lo);
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assert(hi == 0);
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return lo;
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// quantize fee up to 8 decimals
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uint64_t mask = get_fee_quantization_mask();
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uint64_t qlo = (lo + mask - 1) / mask * mask;
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MDEBUG("lo " << print_money(lo) << ", qlo " << print_money(qlo) << ", mask " << mask);
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return qlo;
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}
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//------------------------------------------------------------------
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