Name: StringMath
Author: miroiu

StringMath v4.0.0 — nugetz

MathExpr.AddOperator("abs", a => a > 0 ? a : -a);
double result = "abs -5".Eval(); // 5

// Operator precedence (you can specify an int for precedence)
MathExpr.AddOperator("max", (a, b) => a > b ? a : b, Precedence.Power);
double result = new MathExpr("2 * 3 max 4").Result; // 8

MathExpr expr = "{PI} + 1";
expr.SetOperator("+", (a, b) => Math.Pow(a, b));
double result = expr; // 3.1415926535897931

double result2 = "{PI} + 1".Eval(); // 4.1415926535897931

var expr = "{a} + {b} + {PI}".ToMathExpr();
var variables = expr.Variables;	// { "a", "b", "PI" }
var localVariables = expr.LocalVariables; // { "a", "b" }

MathExpr expr = "1 / {a}".Substitute("a", 1);

double temp = expr.Result; // 1

if (someCondition) 	// true
	expr.Substitute("a", 2);

double final = expr.Result; // 0.5

MathExpr expr = "{PI} + 1";
expr.SetOperator("+", (a, b) => Math.Pow(a, b));

MathExpr expr2 = "3 + 2".ToMathExpr(expr.Context);

double result = "1 + 2 + 3".Eval(expr.Context);

var context = new MathContext();	// new MathContext(MathContext.Default); // to inherit from global
context.RegisterBinary("+", (a, b) => Math.Pow(a, b));

MathExpr expr = new MathExpr("{PI} + 1", context);
MathExpr expr2 = "3 + 2".ToMathExpr(context);
double result = "1 + 2 + 3".Eval(context);

+ (addition)
- (subtraction)
* (multiplication)
/ (division)
% (remainder)
^ (power)
log (logarithm)
max (maximum)
min (minimum)

- (negation)
! (factorial)
sqrt (square root)
sin (sine)
asin (arcsine)
cos (cosine)
acos (arccosine)
tan (tangent)
atan (arctangent)
rad (convert degrees to radians)
deg (convert radians to degrees)
ceil (ceiling)
floor (floor)
round (rounding)
exp (e raised to power)
abs (absolute)

miroiu/StringMathv4.0.0

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String Math

Variables

Global variables

Custom operators

Global operators

Local operators

Advanced

Extract variables

Conditional substitution

Sharing math context

Custom math context

Default operators

Binary

Unary