In C#, I have a long that I need to convert to a decimal. The problem is that I want to put the decimal point at a specific position in the long.
For example, let's say I have the following number as a long:
long l = 123456789
When converting to a decimal with the floating point at the third position, I want to have the following:
decimal d = 123456.789
To give you an example, the function would ideally be something like the BigDecimal.valueOf in Java that allows you to give a long and a position to put the decimal point, and it returns the correct value.
I know one of the solution would be to format the long as a string with the correct decimal point position and then convert it back to a decimal. Another solution would be to multiply the long by 10-Decimal places wanted, but I'm wondering if there's a better alternative to this.
You could use the Decimal constructor that takes different constituent parts. You'll need to do a bit of bitshifting to get the exponent into all the relevant sections, but that shouldn't be too hard. If you know that your value won't be more than 62 bits in magnitude, that would make things easier, too.