@stdlib/blas-ext-base-dapxsum (npm): Adds a constant to each double-precision floating-point strided array element and computes the sum.
Keywords: stdlib|stdmath|statistics|stats|mathematics|math|blas|extended|sum|total|summation|strided|strided array|typed|array|float64|double|float64array|javascript|node|node-js|nodejs|strided-array