Method initialize

src/modules/stats/cox_prop_hazards.cpp:188–195

* @brief Initialize the transition state. Only called for first row. * * @param inAllocator Allocator for the memory transition state. Must fill * the memory block with zeros. * @param inWidthOfX Number of independent variables. The first row of data * determines the size of the transition state. This size is a quadratic * function of inWidthOfX. */

     *     function of inWidthOfX.
     */
    inline void initialize(const Allocator &inAllocator, uint16_t inWidthOfX) {
        mStorage = inAllocator.allocateArray<double, dbal::AggregateContext,
                                             dbal::DoZero,
                                             dbal::ThrowBadAlloc>(arraySize(inWidthOfX));
        rebind(inWidthOfX);
        widthOfX = inWidthOfX;
        this->reset();
    }

    /**
     * @brief We need to support assigning the previous state