Is there a gender function in the Mongodb aggregate structure?

Question

I am trying to do some math in mongodb and have some problems. Is there a way to combine doubling up or down in the mongo db aggregation structure?

Answer 1

According to a comment from Stennie, floor and ceiling methods are not supported.

And according to my comment above, the best solution I could find was simply to perform an operation that looks like this: (num-mod (num, 1)), which should give the same result as the floor function.

Answer 2

Starting with MongoDB 3.2 , you can use the following arithmetic aggregation operators:

• ceil
• trunc
• floor

which allow you to convert to an integer from any side you want. The syntax is simple: { $function: <number> }