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Description

Partial_sum calculates a generalized partial sum: *first is assigned to *result, the sum of *first and *(first + 1) is assigned to *(result + 1), and so on. [1]

More precisely, a running sum is first initialized to *first and assigned to *result. For each iterator i in [first + 1, last), in order from beginning to end, the sum is updated by sum = sum + *i (in the first version) or sum = binary_op(sum, *i) (in the second version) and is assigned to *(result + (i – first)). [2]


Prototype | Standard Template Library Programmer`s Guide | Definition







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