@stdlib/blas-ext-base-gapxsumpw (npm): Adds a constant to each strided array element and computes the sum using pairwise summation.
Keywords: stdlib|stdmath|statistics|stats|mathematics|math|blas|extended|sum|total|pairwise|pw|summation|strided|strided array|typed|array|javascript|node|node-js|nodejs|strided-array