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Return the sum of an array of integers
Source position: math.pp line 443
function SumInt(  | 
const data: PInt64;  | 
const N: LongInt  | 
):Int64;  | 
const data: array of Int64  | 
):Int64;  | 
const data: PInteger;  | 
const N: LongInt  | 
):Int64;  | 
const data: array of Integer  | 
):Int64;  | 
SumInt returns the sum of the N integers in the Data array, where this can be an open array or a pointer to an array.
An overflow may occur.