Math Interpolation - floor & ceil

[rjinski]

Is it possible to add math functions for floor(float) and ceil(float) ?

[kesor]

I would also add min and max to this request.

One example for usage of these would be -

resource "aws_nat_gateway" "nat" {
  count = "${min( length(var.azs), length(var.private_subnets) }"
}

[zdzolton]

(I have already had to hack an implementation for all four of these!)

[ghost]

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