Save 1 _fe_negate since s1 == -s2
Save 1 _fe_negate since s1 == -s2

01BTC10/secp256k1,rustyrussell/secp256k1,libbitcoin/secp256k1,BitcoinUnlimited/BitcoinUnlimited,evoskuil/secp256k1,pmienk/secp256k1,sipa/secp256k1,digitalbitbox/secp256k1,Justaphf/BitcoinUnlimited,shea256/secp256k1-zkp,apoelstra/secp256k1,BTCfork/hardfork_prototype_1_mvf-bu,ElementsProject/secp256k1-zkp,evoskuil/secp256k1,cddjr/BitcoinUnlimited,martindale/secp256k1,voisine/secp256k1,GSongHashrate/secp256k1,vlajos/secp256k1,voisine/secp256k1,cddjr/BitcoinUnlimited,instagibbs/secp256k1,voisine/secp256k1,kleetus/secp256k1,pmienk/secp256k1,evoskuil/secp256k1,kleetus/secp256k1,apoelstra/secp256k1,sipa/secp256k1,BitcoinUnlimited/BitcoinUnlimited,BTCfork/hardfork_prototype_1_mvf-bu,marcusdiaz/BitcoinUnlimited,shea256/secp256k1-zkp,01BTC10/secp256k1,peterdettman/secp256k1,cddjr/BitcoinUnlimited,Bitcoin-com/BUcash,bitcoin/secp256k1,Justaphf/BitcoinUnlimited,digitalbitbox/secp256k1,ftrader-bitcoinunlimited/hardfork_prototype_1_mvf-bu,afk11/secp256k1,vlajos/secp256k1,BTCfork/hardfork_prototype_1_mvf-bu,afk11/secp256k1,peterdettman/secp256k1,rustyrussell/secp256k1,krzysztofwos/BitcoinUnlimited,digitalbitbox/secp256k1,instagibbs/secp256k1,krzysztofwos/BitcoinUnlimited,rustyrussell/secp256k1,bitcoin/secp256k1,ChrisXin/secp256k1,chfast/secp256k1,apoelstra/secp256k1,bitcoin-core/secp256k1,libbitcoin/secp256k1,sipa/secp256k1-zkp,kleetus/secp256k1,marcusdiaz/BitcoinUnlimited,ChrisXin/secp256k1,cddjr/BitcoinUnlimited,sipa/secp256k1-zkp,BTCfork/hardfork_prototype_1_mvf-bu,apoelstra/secp256k1,evoskuil/secp256k1,Bitcoin-com/BUcash,vlajos/secp256k1,afk11/secp256k1,instagibbs/secp256k1,martindale/secp256k1,Bitcoin-com/BUcash,GSongHashrate/secp256k1,chfast/secp256k1,kleetus/secp256k1,chfast/secp256k1,ftrader-bitcoinunlimited/hardfork_prototype_1_mvf-bu,Justaphf/BitcoinUnlimited,ftrader-bitcoinunlimited/hardfork_prototype_1_mvf-bu,krzysztofwos/BitcoinUnlimited,randy-waterhouse/secp256k1,Bitcoin-com/BUcash,Gustav-Simonsson/secp256k1,bitcoin/secp256k1,martindale/secp256k1,BTCfork/hardfork_prototype_1_mvf-bu,ChrisXin/secp256k1,digitalbitbox/secp256k1,afk11/secp256k1,BitcoinUnlimited/BitcoinUnlimited,sipa/secp256k1-zkp,vlajos/secp256k1,sipa/secp256k1-zkp,libbitcoin/secp256k1,GSongHashrate/secp256k1,voisine/secp256k1,BTCfork/hardfork_prototype_1_mvf-bu,sipa/secp256k1-zkp,evoskuil/secp256k1,kleetus/secp256k1,instagibbs/secp256k1,BitcoinUnlimited/BitcoinUnlimited,Justaphf/BitcoinUnlimited,marcusdiaz/BitcoinUnlimited,rustyrussell/secp256k1,digitalbitbox/secp256k1,01BTC10/secp256k1,GSongHashrate/secp256k1,krzysztofwos/BitcoinUnlimited,randy-waterhouse/secp256k1,libbitcoin/secp256k1,pmienk/secp256k1,Gustav-Simonsson/secp256k1,BitcoinUnlimited/BitcoinUnlimited,Justaphf/BitcoinUnlimited,pmienk/secp256k1,pmienk/secp256k1,afk11/secp256k1,bitcoin-core/secp256k1,marcusdiaz/BitcoinUnlimited,bitcoin/secp256k1,chfast/secp256k1,marcusdiaz/BitcoinUnlimited,BitcoinUnlimited/BitcoinUnlimited,ElementsProject/secp256k1-zkp,Bitcoin-com/BUcash,chfast/secp256k1,Gustav-Simonsson/secp256k1,sipa/secp256k1,marcusdiaz/BitcoinUnlimited,randy-waterhouse/secp256k1,instagibbs/secp256k1,krzysztofwos/BitcoinUnlimited,Gustav-Simonsson/secp256k1,martindale/secp256k1,cddjr/BitcoinUnlimited,Justaphf/BitcoinUnlimited,ftrader-bitcoinunlimited/hardfork_prototype_1_mvf-bu,cddjr/BitcoinUnlimited,ChrisXin/secp256k1,sipa/secp256k1,ftrader-bitcoinunlimited/hardfork_prototype_1_mvf-bu,shea256/secp256k1-zkp,shea256/secp256k1-zkp,bitcoin/secp256k1,libbitcoin/secp256k1,voisine/secp256k1,ftrader-bitcoinunlimited/hardfork_prototype_1_mvf-bu,Bitcoin-com/BUcash,randy-waterhouse/secp256k1,krzysztofwos/BitcoinUnlimited,01BTC10/secp256k1,apoelstra/secp256k1