Added more checks to test the correctness of the pexp implementation
Added more checks to test the correctness of the pexp implementation

TSC21/Eigen,ritsu1228/eigen,pasuka/eigen,TSC21/Eigen,ROCmSoftwarePlatform/hipeigen,ROCmSoftwarePlatform/hipeigen,ritsu1228/eigen,ROCmSoftwarePlatform/hipeigen,ritsu1228/eigen,TSC21/Eigen,ritsu1228/eigen,ritsu1228/eigen,pasuka/eigen,pasuka/eigen,TSC21/Eigen,pasuka/eigen,ROCmSoftwarePlatform/hipeigen,pasuka/eigen