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Math Parser

, 25 Aug 2005 CPOL
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Solve mathematical equations

Introduction

This is a parser which uses RegEx to solve mathematical expressions.

How To Use It?

MathParser.Parser p = new MathParser.Parser();
if( p.Evaluate( "-(5-10)^(-1)(3+2(cos(3Pi)+(2+ln(exp(1)))^3))" ) ) 
    Console.WriteLine( p.Result );
else Console.WriteLine( "Error." );

Features

  • Functions
    • abs
    • acos
    • asin
    • atan
    • cos
    • cosh
    • floor
    • ln
    • log
    • sign
    • sin
    • sinh
    • sqrt
    • tan
    • tanh
  • Operators: +, -, *, , ^, !
  • Constants: Pi

Choose between RAD, DEG and GRAD.

p.Mode = MathParser.Mode.RAD;
p.Mode = MathParser.Mode.DEG;
p.Mode = MathParser.Mode.GRAD;

Or:

Parser p = new Parser( MathParser.Mode.DEG );

2(1+3(1e3+1)) = 2*(1+3*(1000+1)) = 2*(1+3(1000+1)) = 2(1+3*(10^3+1)) = 6008

2(1+4(5Pi+2,2e3)(5+2)^3) is the same as 2*(1+4*(5*Pi+2200)*(5+2)^3).

Known Problems

I tested this parser on a German operating system (WinXP).
If I want to convert a string to double (e.g. "3.123") the decimal point must be a "," (Convert.ToDouble("3.123") would throw an Exception).
I'm not sure if this works on an English version of WinXP.

If there are any problems with the decimal point, just report it and I will fix it.

Bug Fixes

  • Fixed some problems with exponents

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Author

Paratrooper666
Germany Germany
No Biography provided

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Comments and Discussions

 
Questionknown bug Pin
Member 113264231-Dec-15 20:48
memberMember 113264231-Dec-15 20:48 
QuestionHow to add % Pin
error_5057-Sep-13 23:27
membererror_5057-Sep-13 23:27 
Question++ | +- | -- | -+ can occur Pin
mirtes_992-Jun-13 4:03
membermirtes_992-Jun-13 4:03 
GeneralClaro y sencillo Pin
Member 42650077-Sep-12 11:20
memberMember 42650077-Sep-12 11:20 
QuestionSolution General, thanks for it! Pin
Member 773069628-Sep-11 14:13
memberMember 773069628-Sep-11 14:13 
QuestionRe: Problem with expression Pin
Member 77306968-Sep-11 17:36
memberMember 77306968-Sep-11 17:36 
GeneralMy vote of 1 Pin
sepehr101417-Jul-11 5:05
membersepehr101417-Jul-11 5:05 
QuestionMultiplying by 0.6 Pin
Member 427553922-Jul-10 12:22
memberMember 427553922-Jul-10 12:22 
General2*8,7-(24,8+1500*0,8*0,00004-0,04*25-2*LOG(150*25)) Pin
fdepijper@ziggo.nl8-Jul-10 19:27
memberfdepijper@ziggo.nl8-Jul-10 19:27 
GeneralRe: 2*8,7-(24,8+1500*0,8*0,00004-0,04*25-2*LOG(150*25)) Pin
BiedermannS14-Mar-13 21:26
memberBiedermannS14-Mar-13 21:26 
GeneralIgnoring comma when called by SQL Assembly Pin
Leo Kruz25-Nov-09 2:59
memberLeo Kruz25-Nov-09 2:59 
GeneralThe Parser does not respect presedence Pin
her´minator4-Mar-09 20:20
memberher´minator4-Mar-09 20:20 
General(exp(2)) not working Pin
TominatorBelgium3-Mar-09 6:59
memberTominatorBelgium3-Mar-09 6:59 
Generalcos(8) Pin
bey0nd8511-Jan-09 23:08
memberbey0nd8511-Jan-09 23:08 
Question10*20+5*10 - No Result ? Pin
Victor Vanchesa15-Nov-07 11:42
memberVictor Vanchesa15-Nov-07 11:42 
Generalgift:binary/hexadecimal and a bug... Pin
METRAWARE5-Nov-07 6:45
memberMETRAWARE5-Nov-07 6:45 
GeneralRe: gift:binary/hexadecimal and a bug... Pin
error_50528-Aug-13 3:25
membererror_50528-Aug-13 3:25 
GeneralProblem with expression Pin
Avrin174-Oct-07 0:12
memberAvrin174-Oct-07 0:12 
GeneralRe: Problem with expression Pin
Member 773069617-Aug-11 16:24
memberMember 773069617-Aug-11 16:24 
Questionln(exp(1)) evaluating correctly for you? Pin
BreakableC21-Sep-07 1:13
memberBreakableC21-Sep-07 1:13 
GeneralACOS, ASIN , ATAN error Pin
roksy30-Aug-07 22:53
memberroksy30-Aug-07 22:53 
QuestionMathieuMathParser add to refrence list. Pin
jad_jabi1-Aug-07 1:10
memberjad_jabi1-Aug-07 1:10 
QuestionProblem with EMT64/AMD64 Extensions? Pin
DocEvil796-Nov-06 7:51
memberDocEvil796-Nov-06 7:51 
AnswerRe: Problem with EMT64/AMD64 Extensions? Pin
fdafdafdsa16-Nov-06 15:37
memberfdafdafdsa16-Nov-06 15:37 
AnswerRe: Problem with EMT64/AMD64 Extensions? Pin
Xynratron15-Mar-07 2:53
memberXynratron15-Mar-07 2:53 
QuestionError In Program Pin
sis138212-Sep-06 8:41
membersis138212-Sep-06 8:41 
AnswerRe: Error In Program Pin
Paratrooper66612-Sep-06 11:55
memberParatrooper66612-Sep-06 11:55 
AnswerRe: Error In Program Pin
Member 77306965-Oct-11 12:36
memberMember 77306965-Oct-11 12:36 
GeneralLogical operators support Pin
Felin4-Aug-06 5:56
memberFelin4-Aug-06 5:56 
GeneralMore problems with floating point Pin
BreakableC16-May-06 4:08
memberBreakableC16-May-06 4:08 
QuestionRe: More problems with floating point Pin
Paratrooper66618-May-06 11:23
memberParatrooper66618-May-06 11:23 
AnswerRe: More problems with floating point Pin
BreakableC18-May-06 23:05
memberBreakableC18-May-06 23:05 
NewsRe: More problems with floating point Pin
Lmello7-Jun-06 16:09
memberLmello7-Jun-06 16:09 
GeneralRe: More problems with floating point Pin
schubb4-Sep-06 6:54
memberschubb4-Sep-06 6:54 
AnswerRe: More problems with floating point Pin
schubb4-Sep-06 7:26
memberschubb4-Sep-06 7:26 
GeneralRe: More problems with floating point Pin
Paratrooper6664-Sep-06 11:21
memberParatrooper6664-Sep-06 11:21 
GeneralRe: More problems with floating point Pin
schubb4-Sep-06 22:31
memberschubb4-Sep-06 22:31 
GeneralRe: More problems with floating point Pin
Paratrooper6665-Sep-06 10:26
memberParatrooper6665-Sep-06 10:26 
Questionhow to use the dll? Pin
ewighell28-Apr-06 21:56
memberewighell28-Apr-06 21:56 
AnswerRe: how to use the dll? Pin
Paratrooper66630-Apr-06 11:59
memberParatrooper66630-Apr-06 11:59 
GeneralUse CultureInfo.InvariantCulture. Pin
wout de zeeuw25-Aug-05 8:41
memberwout de zeeuw25-Aug-05 8:41 
GeneralError Pin
stenflo24-Aug-05 20:41
memberstenflo24-Aug-05 20:41 
GeneralRe: Error Pin
Paratrooper66625-Aug-05 9:10
memberParatrooper66625-Aug-05 9:10 

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