Input Matrix in DTPQRT

[ssnima]

Hi there

Could you please give me an example of Matrix C in DTPQRT or a sample code that use DTPQRT?

In document of DTPQRT C is:

Code: Select all

 DTPQRT computes a blocked QR factorization of a real
 "triangular-pentagonal" matrix C, which is composed of a
 triangular block A and pentagonal block B, using the compact
 WY representation for Q.

Thanks.