Why does .NET use banker's rounding as default?

Question

According to the documentation, the decimal.Round method uses a round-to-even algorithm which is not common for most applications. So I always end up writing a custom functi

Answer 1

While I cannot answer the question of "Why did Microsoft's designers choose this as the default?", I just want to point out that an extra function is unnecessary.

Math.Round allows you to specify a MidpointRounding:

• ToEven - When a number is halfway between two others, it is rounded toward the nearest even number.
• AwayFromZero - When a number is halfway between two others, it is rounded toward the nearest number that is away from zero.