check 24 type 24 test 24 isvalid 24 validate 24 ndarray 24 isndarray 24 is 24 util 24 utils 24 utility 24 utilities 24 assert 24 assertion 24 stdassert 24 stdlib 24 javascript 23 node 23 node-js 23 nodejs 23 2d 13 ismatrix 13 matrix 13 square 8 symm 7 symmetric 7 double 6 double-precision 6 single-precision 6 float 6 single 6 vector 5 isvector 5 vec 5 1d 5 bisymmetric 4 nd 4 array 4 mat 4 float32array 3 float32 3 complex128 3 skew-symmetric 3 complex128array 3 skew 3 complex64array 3 complex64 3 float64array 3 float64 3 persymmetric 2 centrosymmetric 2 antisymmetric 1 antimetric 1 nonsymmetric 1 asymmetric 1