Computes a vector-vector dot product.
Syntax
float cblas_sdot (const MKL_INT n, const float *x, const MKL_INT incx, const float *y, const MKL_INT incy);
double cblas_ddot (const MKL_INT n, const double *x, const MKL_INT incx, const double *y, const MKL_INT incy);
Include Files
- mkl.h
Description
The ?dot routines perform a vector-vector reduction operation defined as
where xi and yi are elements of vectors x and y.
Input Parameters
- n
Specifies the number of elements in vectors x and y.
- x
Array, size at least (1+(n-1)*abs(incx)).
- incx
Specifies the increment for the elements of x.
- y
Array, size at least (1+(n-1)*abs(incy)).
- incy
Specifies the increment for the elements of y.
Return Values
The result of the dot product of x and y, if n is positive. Otherwise, returns 0.