cblas_zrotg(_:_:_:_:)

Declaration

func cblas_zrotg(_ A: OpaquePointer, _ B: OpaquePointer, _ C: UnsafeMutablePointer<Double>, _ S: OpaquePointer)

Parameters

• A:

  Complex value a. Overwritten on return with result r.

• B:

  Complex value a. Overwritten on return with result z (zero).

• C:

  Real value c. Unused on entry. Overwritten on return with the value cos(θ).

• S:

  Complex value s. Unused on entry. Overwritten on return with the value sin(θ).

Discussion

Given a vertical matrix containing a and b, computes the values of cos θ and sin θ that zero the lower value (b). Returns the value of sin θ in s, the value of cos θ in c, and the upper value (r) in a.

See Also

Double-precision complex matrix functions

• cblas_dzasum(_:_:_:)
• cblas_dznrm2(_:_:_:)
• cblas_zaxpy(_:_:_:_:_:_:)
• cblas_zcopy(_:_:_:_:_:)
• cblas_zdrot(_:_:_:_:_:_:_:)
• cblas_zdscal(_:_:_:_:)
• cblas_zgbmv(_:_:_:_:_:_:_:_:_:_:_:_:_:_:)
• cblas_zgemm(_:_:_:_:_:_:_:_:_:_:_:_:_:_:)
• cblas_zgemv(_:_:_:_:_:_:_:_:_:_:_:_:)
• cblas_zgerc(_:_:_:_:_:_:_:_:_:_:)
• cblas_zgeru(_:_:_:_:_:_:_:_:_:_:)
• cblas_zhbmv(_:_:_:_:_:_:_:_:_:_:_:_:)
• cblas_zhemm(_:_:_:_:_:_:_:_:_:_:_:_:_:)
• cblas_zhemv(_:_:_:_:_:_:_:_:_:_:_:)
• cblas_zher(_:_:_:_:_:_:_:_:)