// Return Imag(A).
func Imag(A *matrix.ComplexMatrix) *matrix.FloatMatrix {
C := matrix.FloatZeros(A.Size())
Ar := A.ComplexArray()
Cr := C.FloatArray()
for i, v := range Ar {
Cr[i] = imag(v)
}
return C
}
// Compute Abs(A), Returns a new float valued matrix.
func Abs(A *matrix.ComplexMatrix) *matrix.FloatMatrix {
C := matrix.FloatZeros(A.Rows(), A.Cols())
Cr := C.FloatArray()
Ar := A.ComplexArray()
for k, v := range Ar {
Cr[k] = cmplx.Abs(v)
}
return C
}
// See function Asum.
func AsumComplex(X *matrix.ComplexMatrix, opts ...linalg.Option) (v float64, err error) {
v = 0.0
ind := linalg.GetIndexOpts(opts...)
err = check_level1_func(ind, fasum, X, nil)
if err != nil {
return
}
if ind.Nx == 0 {
return
}
Xa := X.ComplexArray()
v = dzasum(ind.Nx, Xa[ind.OffsetX:], ind.IncX)
return
}
// See function Dotc.
func DotcComplex(X, Y *matrix.ComplexMatrix, opts ...linalg.Option) (v complex128, err error) {
v = 0.0
ind := linalg.GetIndexOpts(opts...)
err = check_level1_func(ind, fdot, X, Y)
if err != nil {
return
}
if ind.Nx == 0 {
return
}
Xa := X.ComplexArray()
Ya := Y.ComplexArray()
v = zdotc(ind.Nx, Xa[ind.OffsetX:], ind.IncX, Ya[ind.OffsetY:], ind.IncY)
return
}