CODEWITHSUNDEEP
decimal
user976385
user976385

Reputation: 137

How to create own method of atan(arc tangent)?

I am using c# decimal for high accuracy project but was stuck at the Atan method because it only accept double. Converting decimal into double will cause a data lose so I am hoping to write my own atan method. Can someone show me how to do it? Thanks in advance!

Upvotes: 1

Views: 469

Answers (1)

Lajos Arpad
Lajos Arpad

Reputation: 76968

You don't need to reinvent the wheel, you can use the DecimalMath class, which has an Atan method, the parameter of the method is decimal and the method returns a decimal too. Read more here.

If you absolutely want to reinvent the wheel and make an implementation yourself, this formula might be useful for you:

arctan(z) = ((z^1)/1)-((z^3)/3)+((z^5)/5)+(((-1)^((2*n)-1))*(((2*n)-1)/((2*n)-1)))

The bigger n is, the more exact is your result.

Upvotes: 2

Related Questions