(C|Z)DOTU¶

Single complex and double complex DOTU.

Description¶

Performs a dot product of the complex vectors $x$ and $y$ .

$\result = \sum_{i=1}^N {x_{i} * y_{i}}$

BLAS Interface¶

void cdotu(qml_single_complex *result, const qml_long *N,
           const qml_single_complex *X, const qml_long *INCX,
           const qml_single_complex *Y, const qml_long *INCY);

void zdotu(qml_double_complex *result, const qml_long *N,
           const qml_double_complex *X, const qml_long *INCX,
           const qml_double_complex *Y, const qml_long *INCY);

CBLAS Interface¶

void cblas_cdotu_sub(const qml_long N, const qml_single_complex *X,
                     const qml_long INCX, const qml_single_complex *Y,
                     const qml_long INCY, qml_single_complex *result);

void cblas_zdotu_sub(const qml_long N, const qml_double_complex *X,
                     const qml_long INCX, const qml_double_complex *Y,
                     const qml_long INCY, qml_double_complex *result);

Arguments¶

N	Number of elements in X and Y
X	First input vector, must be at least: $(\fvar{N}-1)\mult\abs{\fvar{INCX}} + 1$
INCX	Distance between individual elements in X
Y	Second input vector, must be at least: $(\fvar{N}-1)\mult\abs{\fvar{INCY}} + 1$
INCY	Distance between individual elements in Y
Result	Result of the dot product