topic Re: Formula Evaluation in Application Development and Automation Discussions

Formula Evaluation

Former Member — Fri, 09 Oct 2009 07:10:35 GMT

Hi Experts,

Can any one give suggestion for that

user gives formula that have all arthimatic operators and trignometric also may have

how to evaluate that and how to get the solution

formula is like

( a + b ) * ( c / b ) sin(60) + tan(45) .

in this how to get what operator is first and what operator is next

Thanks

Surendra Reddy

kesavadas_thekkillath — Fri, 09 Oct 2009 07:25:57 GMT

check this thread.

im not sure how much it will help you in scientific calculations

try with input.

2 + ( 3 * 6 ) + SIN(60) + TAN(45)

Edited by: Keshu Thekkillam on Oct 9, 2009 1:03 PM

Former Member — Fri, 09 Oct 2009 07:45:32 GMT

you can.

SIN( 30 )
TAN( 45 ).

see there is a space between bracket and the number

abc = 2 * sin( 30 ).

and you total formula follows the normal mathematical order.

brackets, division, multi, plus, minus etc..

Former Member — Fri, 09 Oct 2009 07:52:50 GMT

What Soumyaprakash told is wrong. There are some operator precedence being followed while calculating the expression.

In the expression: ( a + b ) * ( c / b ) sin(60) + tan(45), it executes in the below order

1) c/b

2) (result of step 1) * sin(60)

3) a+b

4) (result of step 3) * (result of(step 2)

5) result of step 4 + tan(45)

Regards

Rajvat

Former Member — Fri, 09 Oct 2009 07:57:39 GMT

raj, what did i say wrong ?

Former Member — Fri, 09 Oct 2009 08:50:35 GMT

Hi Soumya

I meant that the concept behind calculation is as per mathematical precedence rule.

Rajvat