thereadme/mathexpr
1
0
Fork 0
Code Issues 1 Pull Requests Projects Releases Wiki Activity

Documentation for how operators and functions are.

Browse Source
This commit is contained in:
JonathanILevi 2020-02-21 14:04:36 -06:00 committed by GitHub
parent bbfd1cdf43
commit 562a8b1b6b
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 12 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
src/Numeric/MathExpr.hs
View File

@ -9,15 +9,26 @@ module Numeric.MathExpr
import Data.Maybe (isJust, fromJust)
import Data.List (find)
-- | Operators are in the form (character, precedence, function)
-- Example: ('+', 0, (+)), ('', 1, ())
-- (higher the precedence, the sooner the operator operates)
--
-- Functions are in the form (name, function)
-- Example: ("ln", log)
data Settings = Settings { operators :: [(Char, Int, Double -> Double -> Double)]
, functions :: [(String, Double -> Double)]
}
-- | Operators are in the form (character, precedence, function)
-- Example: ('+', 0, (+)), ('', 1, ())
-- (higher the precedence, the sooner the operator operates)
defaultOperators = [
('+', 0, (+)), ('-', 0, (-)),
('*', 1, (*)), ('/', 1, (/)),
('^', 2, (**))
]
-- | Functions are in the form (name, function)
-- Example: ("ln", log)
defaultFunctions = [("ln", log), ("sin", sin), ("cos", cos)]
instance Default Settings where