[#absl-c_inner_product-09]
= xref:absl.adoc[absl]::c_inner_product
:relfileprefix: ../
:mrdocs:

`c_inner_product` overloads

== Synopses

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

Container‐based version of the <numeric> `std::inner_product()` function to compute the cumulative inner product of container element pairs.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    typename Sequence1,
    typename Sequence2,
    typename T>
constexpr
std::decay_t<T>
xref:absl/c_inner_product-03.adoc[c_inner_product](
    Sequence1 const& factors1,
    Sequence2 const& factors2,
    T&& sum);
----

[.small]#xref:absl/c_inner_product-03.adoc[_» more..._]#

Overload of `c_inner_product()` for using binary operations other than `operator+` (for computing the accumulation) and `operator*` (for computing the product between the two container's element pair).


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    typename Sequence1,
    typename Sequence2,
    typename T,
    typename BinaryOp1,
    typename BinaryOp2>
constexpr
std::decay_t<T>
xref:absl/c_inner_product-0d.adoc[c_inner_product](
    Sequence1 const& factors1,
    Sequence2 const& factors2,
    T&& sum,
    BinaryOp1&& op1,
    BinaryOp2&& op2);
----

[.small]#xref:absl/c_inner_product-0d.adoc[_» more..._]#

== Return Value

The computed inner product.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *factors1*
| The first container of factors.
| *factors2*
| The second container of factors.
| *sum*
| The initial value of the accumulation.
| *op1*
| The binary operation used to accumulate the products.
| *op2*
| The binary operation used to combine element pairs.
|===


[.small]#Created with https://www.mrdocs.com[MrDocs]#