sum

Prototype: sum(list)

Return type: real

Description: Return the sum of the reals in list.

This function might be used for simple ring computation. Of course, you could easily combine sum with readstringarray or readreallist etc., to collect summary information from a source external to CFEngine.

Arguments:

• list : A list of arbitrary real values, in the range [a-zA-Z0-9_$(){}\[\].:]+

Example:

bundle agent test
{
  vars:
      "adds_to_six" ilist => { "1", "2", "3" };
      "six" real => sum("adds_to_six");
      "adds_to_zero" rlist => { "1.0", "2", "-3e0" };
      "zero" real => sum("adds_to_zero");

  reports:
      "six is $(six), zero is $(zero)";
}

Because $(six) and $(zero) are both real numbers, the report that is generated will be:

six is 6.000000, zero is 0.000000

Notes:

History: Was introduced in version 3.1.0b1,Nova 2.0.0b1 (2010)