Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
Is there a generally accepted way to get Euler’s number in BigDecimal?
I basically want to do Math.exp(double a) and I basically want the same function but calculated using BigDecimal to prevent precision loss with other calculations.
I thought of just doing,
BigDecimal.valueOf(Math.E).pow(BigDecimal.SOMEOTHERNUMBER)
But not sure if that’s the right way to approach the problem.
The problem is that Euler’s number is irrational; in BigDecimal, you’d have to have infinite memory to hold it. The reason there’s no previously-stored value is that however many decimal places you needed, you wouldn’t have the right number for your current application.
You’re going to have to determine how many decimals you want, then construct the BigDecimal representation using the String constructor (new BigDecimal(“2.71828…”)).