#include "data.hpp"

/**
 * @brief Product of every elements in a given shape after a given offset.
 *
 * @param shape Shape to product over
 * @param offset Skip offset
 * @return Scalar product
 */
__host__ __device__
size_t np::prod(const np::Shape& shape, const size_t& offset) noexcept {
	size_t result = shape[offset];
	for(size_t i = 1 + offset; i < shape.length; ++i)
		result *= shape[i];
	return result;
}