(S|D)DOT¶

Single and double DOT.

Description¶

Performs a dot product using the input vectors X and Y.

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

BLAS Interface¶

float  sdot(const qml_long *N, const float *X, const qml_long *INCX,
            const float *Y, const qml_long *INCY);

double ddot(const qml_long *N, const double *X, const qml_long *INCX,
            const double *Y, const qml_long *INCY);

CBLAS Interface¶

float  cblas_sdot(const qml_long N, const float *X, const qml_long INCX,
                  const float *Y, const qml_long INCY);

double cblas_ddot(const qml_long N, const double *X, const qml_long INCX,
                  const double *Y, const qml_long INCY);

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