cblas_drotm(_:_:_:_:_:_:)

Declaration

func cblas_drotm(_ N: __LAPACK_int, _ X: UnsafeMutablePointer<Double>?, _ INCX: __LAPACK_int, _ Y: UnsafeMutablePointer<Double>?, _ INCY: __LAPACK_int, _ P: UnsafePointer<Double>)

Parameters

• N:

  Number of elements in vectors.

• X:

  Vector X. Modified on return.

• INCX:

  Stride within X. For example, if incX is 7, every 7th element is used.

• Y:

  Vector Y. Modified on return.

• INCY:

  Stride within Y. For example, if incY is 7, every 7th element is used.

• P:

  A 5-element vector:

  P[0]

  Flag value that defines the form of matrix H.

  -2.0: matrix H contains the identity matrix.

  -1.0: matrix H is identical to matrix SH (defined by the remaining values in the vector).

  0.0: H[1,2] and H[2,1] are obtained from matrix SH. The remaining values are both 1.0.

  1.0: H[1,1] and H[2,2] are obtained from matrix SH. H[1,2] is 1.0. H[2,1] is -1.0.

  P[1]

  Contains SH[1,1].

  P[2]

  Contains SH[2,1].

  P[3]

  Contains SH[1,2].

  P[4]

  Contains SH[2,2].

Discussion

See Also

Double-precision float matrix functions

• cblas_dasum(_:_:_:)
• cblas_daxpy(_:_:_:_:_:_:)
• cblas_dcopy(_:_:_:_:_:)
• cblas_dgbmv(_:_:_:_:_:_:_:_:_:_:_:_:_:_:)
• cblas_dgemm(_:_:_:_:_:_:_:_:_:_:_:_:_:_:)
• cblas_dgemv(_:_:_:_:_:_:_:_:_:_:_:_:)
• cblas_dger(_:_:_:_:_:_:_:_:_:_:)
• cblas_dnrm2(_:_:_:)
• cblas_drot(_:_:_:_:_:_:_:)
• cblas_drotg(_:_:_:_:)
• cblas_drotmg(_:_:_:_:_:)
• cblas_dsbmv(_:_:_:_:_:_:_:_:_:_:_:_:)
• cblas_dscal(_:_:_:_:)
• cblas_dspmv(_:_:_:_:_:_:_:_:_:_:)
• cblas_dspr(_:_:_:_:_:_:_:)