Erro de calculo do c$

Question

Conforme imagens acima, tenho um calculo da variavel tef.valor * 100, o valor da variavel conforme segunda imagem é de 589.8. 589.8 * 100 = 58980, porem o c# ta apresentando o resultado 58979,999999... Alguem pode me dizer pq acontece este erro de calculo?

Answer 1

There are limitations in the precision of float and double values due to the way they're stored in memory:

https://learn.microsoft.com/en-us/dotnet/api/system.double?view=net-7.0#Precision

If you require a higher precision, or if you're working with numbers that can't be accurately stored in a binary fraction then you could consider casting the number as a decimal ((decimal) tef.Valor) instead.