dot: Dot (inner) product

\(x^H y\) More...

Functions
template<typename TX , typename TY >
scalar_type< TX, TY >	blas::dot (int64_t n, TX const *x, int64_t incx, TY const *y, int64_t incy)
void	blas::dot (int64_t n, float const *x, int64_t incx, float const *y, int64_t incy, float *result, blas::Queue &queue)
	GPU device, float version.
void	blas::dot (int64_t n, double const *x, int64_t incx, double const *y, int64_t incy, double *result, blas::Queue &queue)
	GPU device, double version.
void	blas::dot (int64_t n, std::complex< float > const *x, int64_t incx, std::complex< float > const *y, int64_t incy, std::complex< float > *result, blas::Queue &queue)
	GPU device, complex<float> version.
void	blas::dot (int64_t n, std::complex< double > const *x, int64_t incx, std::complex< double > const *y, int64_t incy, std::complex< double > *result, blas::Queue &queue)
	GPU device, complex<double> version.
float	blas::dot (int64_t n, float const *x, int64_t incx, float const *y, int64_t incy)
	CPU, float version.
double	blas::dot (int64_t n, double const *x, int64_t incx, double const *y, int64_t incy)
	CPU, double version.
std::complex< float >	blas::dot (int64_t n, std::complex< float > const *x, int64_t incx, std::complex< float > const *y, int64_t incy)
	CPU, complex<float> version.
std::complex< double >	blas::dot (int64_t n, std::complex< double > const *x, int64_t incx, std::complex< double > const *y, int64_t incy)
	CPU, complex<double> version.

Detailed Description

\(x^H y\)

Function Documentation

dot() [1/2]

void blas::dot	(	int64_t	n,
		float const *	x,
		int64_t	incx,
		float const *	y,
		int64_t	incy,
		float *	result,
		blas::Queue &	queue
	)

GPU device, float version.

Unlike CPU version, here result is an output parameter, to store the result when the asynchronous execution completes.

dot() [2/2]

template<typename TX , typename TY >

scalar_type< TX, TY > blas::dot	(	int64_t	n,
		TX const *	x,
		int64_t	incx,
		TY const *	y,
		int64_t	incy
	)

Returns

dot product, \(x^H y\).

See also

dotu for unconjugated version, \(x^T y\).

Generic implementation for arbitrary data types.

Parameters

[in]	n	Number of elements in x and y. n >= 0.
[in]	x	The n-element vector x, in an array of length (n-1)*abs(incx) + 1.
[in]	incx	Stride between elements of x. incx must not be zero. If incx < 0, uses elements of x in reverse order: x(n-1), ..., x(0).
[in]	y	The n-element vector y, in an array of length (n-1)*abs(incy) + 1.
[in]	incy	Stride between elements of y. incy must not be zero. If incy < 0, uses elements of y in reverse order: y(n-1), ..., y(0).