cblas_srotmg(_:_:_:_:_:)

Declaration

func cblas_srotmg(_ D1: UnsafeMutablePointer<Float>, _ D2: UnsafeMutablePointer<Float>, _ B1: UnsafeMutablePointer<Float>, _ B2: Float, _ P: UnsafeMutablePointer<Float>)

Parameters

• D1:

  Scaling factor D1.

• D2:

  Scaling factor D2.

• B1:

  Scaling factor B1.

• B2:

  Scaling factor B2.

• 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

The resulting matrix zeroes the second component of the vector (sqrt(D1)*B1, sqrt(SD2)*B2).

See Also

Single-precision float matrix functions

• cblas_sasum(_:_:_:)
• cblas_saxpy(_:_:_:_:_:_:)
• cblas_scopy(_:_:_:_:_:)
• cblas_sgbmv(_:_:_:_:_:_:_:_:_:_:_:_:_:_:)
• cblas_sgemm(_:_:_:_:_:_:_:_:_:_:_:_:_:_:)
• cblas_sgemv(_:_:_:_:_:_:_:_:_:_:_:_:)
• cblas_sger(_:_:_:_:_:_:_:_:_:_:)
• cblas_snrm2(_:_:_:)
• cblas_srot(_:_:_:_:_:_:_:)
• cblas_srotg(_:_:_:_:)
• cblas_srotm(_:_:_:_:_:_:)
• cblas_ssbmv(_:_:_:_:_:_:_:_:_:_:_:_:)
• cblas_sscal(_:_:_:_:)
• cblas_sspmv(_:_:_:_:_:_:_:_:_:_:)
• cblas_sspr(_:_:_:_:_:_:_:)