- naginterfaces.library.blas.droti(x, indx, y, c, s)¶
drotiapplies a real plane rotation to a sparse real vector and a real vector.
For full information please refer to the NAG Library document for f06ex
- xfloat, array-like, shape
The nonzero elements of the sparse vector .
- indxint, array-like, shape
must contain the index of in the sparse vector , for .
- yfloat, array-like, shape
The vector . Only the elements corresponding to indices in are referenced.
The value , the cosine of the rotation.
The value , the sine of the rotation.
- xfloat, ndarray, shape
The transformed vector .
- yfloat, ndarray, shape
The transformed vector . Only elements corresponding to indices in are altered.
No equivalent traditional C interface for this routine exists in the NAG Library.
drotiapplies a real plane rotation to a sparse real vector stored in compressed form and a real vector in full storage form:
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