Popularity
5.0
Growing
Activity
0.0
Stable
7
3
1
Monthly Downloads: 18
Programming language: Haskell
License: GNU General Public License v3.0 only
Tags:
Math
mathexpr alternatives and similar packages
Based on the "Math" category.
Alternatively, view mathexpr alternatives based on common mentions on social networks and blogs.

vector
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A haskell numeric prelude, providing a clean structure for numbers and operations that combine them. 
cf
"Exact" real arithmetic for Haskell using continued fractions (Not formally proven correct) 
optimization
Some numerical optimization methods implemented in Haskell 
poly
Fast polynomial arithmetic in Haskell (dense and sparse, univariate and multivariate, usual and Laurent) 
safedecimal
Safe and very efficient arithmetic operations on fixed decimal point numbers 
equationalreasoning
Agdastyle equational reasoning in Haskell 
sbvPlugin
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eigen
Haskel binding for Eigen library. Eigen is a C++ template library for linear algebra: matrices, vectors, numerical solvers, and related algorithms. 
polynomial
Haskell library for manipulating and evaluating polynomials 
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vectorbinaryinstances
Instances for the Haskell Binary class, for the types defined in the popular vector package.
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Do you think we are missing an alternative of mathexpr or a related project?
README
mathexpr
Ever wanted to take as input a mathematical expression to fill in values and use it? mathexpr
is exactly what you need.
I also wrote this in JavaScript some time ago: Equation
Examples
Simple evaluation of expressions:
import Data.MathExpr
main = do
expr < getLine  a mathematical expression, e.g. sin x + y ^ 2
 replace x and y with the specified values and evaluate: sin 2 + 5 ^ 2 = 25.909..
print $ evaluate def expr [("x", 2), ("y", 5)]
Using custom operators and functions:
import Data.MathExpr
 operators are in the form (character, precedence, function)
 example: ('+', 0, (+)), ('*', 1, (*))
 the function should have the type (Double > Double > Double)
 the higher the precedence, the sooner the operator operates
 functions are in the form (name, function)
 example: ("ln", log)
 the function should have the type (Double > Double)
main =
let avg a b = (a + b) / 2
let settings = Settings { operators = defaultOperators ++ [('~', 0, avg)]
, functions = defaultFunctions ++ [("trunc", fromIntegral . truncate)]
evaluate settings "3 ~ 5" []  4
evaluate settings "trunc 1.1" []  1