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22a375a5f4
Add an amendment to allow gateways to set a "tick size" for assets they issue. There are no changes unless the amendment is enabled (since the tick size option cannot be set). With the amendment enabled: AccountSet transactions may set a "TickSize" parameter. Legal values are 0 and 3-15 inclusive. Zero removes the setting. 3-15 allow that many decimal digits of precision in the pricing of offers for assets issued by this account. For asset pairs with XRP, the tick size imposed, if any, is the tick size of the issuer of the non-XRP asset. For asset pairs without XRP, the tick size imposed, if any, is the smaller of the two issuer's configured tick sizes. The tick size is imposed by rounding the offer quality down to nearest tick and recomputing the non-critical side of the offer. For a buy, the amount offered is rounded down. For a sell, the amount charged is rounded up. Gateways must enable a TickSize on their account for this feature to benefit them. The primary expected benefit is the elimination of bots fighting over the tip of the order book. This means: - Quicker price discovery as outpricing someone by a microscopic amount is made impossible. Currently bots can spend hours outbidding each other with no significant price movement. - A reduction in offer creation and cancellation spam. - More offers left on the books as priority means something when you can't outbid by a microscopic amount.
60 lines
2.4 KiB
C++
60 lines
2.4 KiB
C++
//------------------------------------------------------------------------------
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/*
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This file is part of rippled: https://github.com/ripple/rippled
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Copyright (c) 2012, 2013 Ripple Labs Inc.
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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//==============================================================================
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#include <string>
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#include <vector>
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namespace ripple {
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namespace detail {
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/** Amendments that this server supports and enables by default */
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std::vector<std::string>
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preEnabledAmendments ()
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{
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return
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{
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};
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}
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/** Amendments that this server supports, but doesn't enable by default */
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std::vector<std::string>
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supportedAmendments ()
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{
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return
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{
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{ "C6970A8B603D8778783B61C0D445C23D1633CCFAEF0D43E7DBCD1521D34BD7C3 SHAMapV2" },
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{ "4C97EBA926031A7CF7D7B36FDE3ED66DDA5421192D63DE53FFB46E43B9DC8373 MultiSign" },
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{ "C1B8D934087225F509BEB5A8EC24447854713EE447D277F69545ABFA0E0FD490 Tickets" },
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{ "DA1BD556B42D85EA9C84066D028D355B52416734D3283F85E216EA5DA6DB7E13 SusPay" },
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{ "6781F8368C4771B83E8B821D88F580202BCB4228075297B19E4FDC5233F1EFDC TrustSetAuth" },
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{ "42426C4D4F1009EE67080A9B7965B44656D7714D104A72F9B4369F97ABF044EE FeeEscalation" },
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{ "9178256A980A86CF3D70D0260A7DA6402AAFE43632FDBCB88037978404188871 OwnerPaysFee" },
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{ "08DE7D96082187F6E6578530258C77FAABABE4C20474BDB82F04B021F1A68647 PayChan" },
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{ "740352F2412A9909880C23A559FCECEDA3BE2126FED62FC7660D628A06927F11 Flow" },
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{ "1562511F573A19AE9BD103B5D6B9E01B3B46805AEC5D3C4805C902B514399146 CryptoConditions" },
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{ "532651B4FD58DF8922A49BA101AB3E996E5BFBF95A913B3E392504863E63B164 TickSize" }
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};
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}
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}
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}
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