cast

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Cast is an abstract syntax tree library written in C. This allows for converting char* variables to mathematical structures.

Sample Code

#include "include/cast/parser.h"

int main(void) {
    char* toParse = "a * bc + 123 / sin(3.1415 * n) ^ log_(2, 8) - e";
    struct Operation operation = parseOperation(toParse);
    printOperation(operation);
    
    // Replace variables!
    struct Operation variable = Variable("a");
    struct Operation constant = Constant(2 + 2 * I);
    struct Operation evaluated = evaluate(operation, variable, constant);
    
    // Or replace entire functions:
    struct Operation toReplace = parseOperation("sin(3.1415 * n)");
    struct Operation replaceWith = parseOperation("2 + 5i");
    struct Operation replaced = evaluate(evaluated, toReplace, replaceWith);
}

Soon there will be support for derivatives of functions with respect to some variable.