Accumulating functions

xtensor provides the following accumulating functions for xexpressions:

Defined in xtensor/xmath.hpp

template<class E>
auto xt::cumsum(E &&e)

template<class E>
auto xt::cumsum(E &&e, std::ptrdiff_t axis)

Cumulative sum.

Returns the accumulated sum for the elements over given axis (or flattened).

Return

an xarray<T>

Parameters

• e: an xexpression

• axis: the axes along which the cumulative sum is computed (optional)

template<class E>
auto xt::cumprod(E &&e)

template<class E>
auto xt::cumprod(E &&e, std::ptrdiff_t axis)

Cumulative product.

Returns the accumulated product for the elements over given axis (or flattened).

Return

an xarray<T>

Parameters

• e: an xexpression

• axis: the axes along which the cumulative product is computed (optional)