{"action":"opened","issue":{"url":"https://api.github.com/repos/ethereum/yellowpaper/issues/190","repository_url":"https://api.github.com/repos/ethereum/yellowpaper","labels_url":"https://api.github.com/repos/ethereum/yellowpaper/issues/190/labels{/name}","comments_url":"https://api.github.com/repos/ethereum/yellowpaper/issues/190/comments","events_url":"https://api.github.com/repos/ethereum/yellowpaper/issues/190/events","html_url":"https://github.com/ethereum/yellowpaper/issues/190","id":181162014,"number":190,"title":"Parsing ambiguity in the `SMOD` specification","user":{"login":"pirapira","id":44281,"avatar_url":"https://avatars.githubusercontent.com/u/44281?v=3","gravatar_id":"","url":"https://api.github.com/users/pirapira","html_url":"https://github.com/pirapira","followers_url":"https://api.github.com/users/pirapira/followers","following_url":"https://api.github.com/users/pirapira/following{/other_user}","gists_url":"https://api.github.com/users/pirapira/gists{/gist_id}","starred_url":"https://api.github.com/users/pirapira/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/pirapira/subscriptions","organizations_url":"https://api.github.com/users/pirapira/orgs","repos_url":"https://api.github.com/users/pirapira/repos","events_url":"https://api.github.com/users/pirapira/events{/privacy}","received_events_url":"https://api.github.com/users/pirapira/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2016-10-05T13:59:41Z","updated_at":"2016-10-05T13:59:41Z","closed_at":null,"body":"In the table in Appendix H.2, `SMOD` is specified using an expression\r\n```\r\nsgn(μₛ[0]) |μₛ[0]| mod |μₛ[1]|\r\n```\r\n\r\nThis is ambiguous because there are two possible parentheses around subexpressions\r\n```\r\n(sgn(μₛ[0]) |μₛ[0]|) mod |μₛ[1]|\r\n```\r\nor\r\n```\r\nsgn(μₛ[0]) (|μₛ[0]| mod |μₛ[1]|)\r\n```\r\n\r\nThis difference affects the sign of the result."}}
{"actor":{"display_login":"pirapira"}}