Is there a way to compute a natural log using decimal values in C#? I need something like
decimal dec = Math.Log(decimalInput);`
The problem is that Math.Log(x) only works with a double type as input and another double as output.
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André Levasseur
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4Convert decimal to double...? – davidsbro Jan 14 '22 at 20:23
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2`var dec = (decimal)Math.Log((double)decimalInput);` – Dmitry Bychenko Jan 14 '22 at 20:23
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@DmitryBychenko that's a bad idea. it loses precision. – Daniel A. White Jan 14 '22 at 20:30
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@DanielA.White: Yes, it loses precision but I'm not following why it is necessarily a bad idea. Under what circumstances is 15 decimal digits of precision insufficient for a *log* operation? – Eric Lippert Jan 14 '22 at 21:14
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Precision is required as it is used in a financial correlation analysis that involves a lot of natural log applied on a lot of decimal values – André Levasseur Jan 14 '22 at 22:06