'sum()'sum() |
This information is part of the Modelica Standard Library maintained by the Modelica Association.
Returns the scalar sum
sum(A) sum(e(i, ..., j) for i in u, ..., j in v)
The first form returns the scalar sum of all the elements of
array expression A:
A[1,...,1]+A[2,...,1]+....+A[end,...,1]+A[end,...,end]
The second form is a reduction expression and returns the sum of the expression e(i, ..., j) evaluated for all combinations of i in u, ..., j in v:
e(u[1],...,v[1]) + e(u[2],...,v[1]) + ... + e(u[end],...,v[1]) + ... + e(u[end],...,v[end])
The type of sum(e(i, ..., j) for i in u, ..., j in v) is the same as the type of e(i,...j).
sum(i for i in 1:10) // Gives 1+2+...+10=55 // Read it as: compute the sum of i for i in the range 1 to 10.