- naginterfaces.library.blas.zgthrz(y, indx)¶
zgthrzgathers specified (usually nonzero) elements of a complex vector in full storage form into a sparse complex vector in compressed form. The specified elements of are set to zero.
For full information please refer to the NAG Library document for f06gv
- ycomplex, array-like, shape
The vector . Only elements corresponding to indices in are accessed.
- indxint, array-like, shape
must contain the set of indices .
- ycomplex, ndarray, shape
The elements of corresponding to indices in are set to zero.
- xcomplex, ndarray, shape
The compressed vector .
No equivalent traditional C interface for this routine exists in the NAG Library.
Dodson, D S, Grimes, R G and Lewis, J G, 1991, Sparse extensions to the Fortran basic linear algebra subprograms, ACM Trans. Math. Software (17), 253–263