[#absl-c_partial_sum-0c0]
= xref:absl.adoc[absl]::c_partial_sum
:relfileprefix: ../
:mrdocs:

`c_partial_sum` overloads

== Synopses

Declared in `<absl/algorithm/container.h>`

Container‐based version of the <numeric> `std::partial_sum()` function to compute the partial sum of the elements in a sequence and write them to an iterator. The partial sum is the sum of all element values so far in the sequence.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    typename InputSequence,
    typename OutputIt>
constexpr
OutputIt
xref:absl/c_partial_sum-07.adoc[c_partial_sum](
    InputSequence const& input,
    OutputIt output_first);
----

[.small]#xref:absl/c_partial_sum-07.adoc[_» more..._]#

Overload of `c_partial_sum()` for using a binary operation other than addition to compute the "partial sum".


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    typename InputSequence,
    typename OutputIt,
    typename BinaryOp>
constexpr
OutputIt
xref:absl/c_partial_sum-0c7.adoc[c_partial_sum](
    InputSequence const& input,
    OutputIt output_first,
    BinaryOp&& op);
----

[.small]#xref:absl/c_partial_sum-0c7.adoc[_» more..._]#

== Return Value

An iterator to the end of the written range in the output.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *input*
| The container whose elements to sum.
| *output_first*
| The output iterator receiving the partial sums.
| *op*
| The binary operation used to combine values.
|===


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