@stdlib/assert-is-persymmetric-matrix (npm): Test if a value is a persymmetric matrix.
Keywords: stdlib|stdassert|assertion|assert|utilities|utility|utils|util|is|isndarray|ndarray|ndarray-like|matrix|ismatrix|2d|square|symmetric|persymmetric|bisymmetric|symm|validate|isvalid|test|type|check|javascript|node|node-js|nodejs