Is the equality comparison for C# decimal types any more likely to work as we would intuitively expect than other floating point types?
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Is the equality comparison for C# decimal types any more likely to work as we would intuitively expect than other floating point types?
I guess that depends on your intuition. I would assume that some people would think of the result of dividing 1 by 3 as the fraction 1/3, and others would think more along the lines of “Oh, 1 divided by 3 can’t be represented as a decimal number, we’ll have to decide how many digits to keep, let’s go with 0.333”.
If you think in the former way,
Decimalwon’t help you much, but if you think in the latter way, and are explicit about rounding when needed, it is more likely that operations that are “intuitively” not subject to rounding errors in decimal, e.g. dividing by 10, will behave as you expect. This is more intuitive to most people than the behavior of a binary floating-point type, where powers of 2 behave nicely, but powers of 10 do not.