dot: Dot (inner) product

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

Functions
magmaFloatComplex	magma_cblas_cdotc (magma_int_t n, const magmaFloatComplex *x, magma_int_t incx, const magmaFloatComplex *y, magma_int_t incy)
	Returns dot product of vectors x and y; \( x^H y \). More...
magmaFloatComplex	magma_cblas_cdotu (magma_int_t n, const magmaFloatComplex *x, magma_int_t incx, const magmaFloatComplex *y, magma_int_t incy)
double	magma_cblas_ddot (magma_int_t n, const double *x, magma_int_t incx, const double *y, magma_int_t incy)
float	magma_cblas_sdot (magma_int_t n, const float *x, magma_int_t incx, const float *y, magma_int_t incy)
magmaDoubleComplex	magma_cblas_zdotc (magma_int_t n, const magmaDoubleComplex *x, magma_int_t incx, const magmaDoubleComplex *y, magma_int_t incy)
	Returns dot product of vectors x and y; \( x^H y \). More...
magmaDoubleComplex	magma_cblas_zdotu (magma_int_t n, const magmaDoubleComplex *x, magma_int_t incx, const magmaDoubleComplex *y, magma_int_t incy)
magmaFloatComplex	magma_cdotc (magma_int_t n, magmaFloatComplex_const_ptr dx, magma_int_t incx, magmaFloatComplex_const_ptr dy, magma_int_t incy, magma_queue_t queue)
magmaFloatComplex	magma_cdotu (magma_int_t n, magmaFloatComplex_const_ptr dx, magma_int_t incx, magmaFloatComplex_const_ptr dy, magma_int_t incy, magma_queue_t queue)
double	magma_ddot (magma_int_t n, magmaDouble_const_ptr dx, magma_int_t incx, magmaDouble_const_ptr dy, magma_int_t incy, magma_queue_t queue)
float	magma_sdot (magma_int_t n, magmaFloat_const_ptr dx, magma_int_t incx, magmaFloat_const_ptr dy, magma_int_t incy, magma_queue_t queue)
magmaDoubleComplex	magma_zdotc (magma_int_t n, magmaDoubleComplex_const_ptr dx, magma_int_t incx, magmaDoubleComplex_const_ptr dy, magma_int_t incy, magma_queue_t queue)
magmaDoubleComplex	magma_zdotu (magma_int_t n, magmaDoubleComplex_const_ptr dx, magma_int_t incx, magmaDoubleComplex_const_ptr dy, magma_int_t incy, magma_queue_t queue)

Detailed Description

\( x^T y \) or \( x^H y \)

Function Documentation

magmaFloatComplex magma_cblas_cdotc	(	magma_int_t	n,
		const magmaFloatComplex *	x,
		magma_int_t	incx,
		const magmaFloatComplex *	y,
		magma_int_t	incy
	)

Returns dot product of vectors x and y; \( x^H y \).

To avoid dependence on CBLAS and incompatability issues between BLAS libraries, MAGMA uses its own implementation, following BLAS reference.

Parameters

[in]	n	Number of elements in vector x and y. n >= 0.
[in]	x	COMPLEX array on CPU host. The n element vector x of dimension (1 + (n-1)*incx).
[in]	incx	Stride between consecutive elements of x. incx > 0.
[in]	y	COMPLEX array on CPU host. The n element vector y of dimension (1 + (n-1)*incy).
[in]	incy	Stride between consecutive elements of dy. incy > 0.

magmaFloatComplex magma_cblas_cdotu	(	magma_int_t	n,
		const magmaFloatComplex *	x,
		magma_int_t	incx,
		const magmaFloatComplex *	y,
		magma_int_t	incy
	)

Returns

dot product (unconjugated) of vectors x and y; \( x^T y \).

To avoid dependence on CBLAS and incompatability issues between BLAS libraries, MAGMA uses its own implementation, following BLAS reference.

Parameters

[in]	n	Number of elements in vector x and y. n >= 0.
[in]	x	COMPLEX array on CPU host. The n element vector x of dimension (1 + (n-1)*incx).
[in]	incx	Stride between consecutive elements of x. incx > 0.
[in]	y	COMPLEX array on CPU host. The n element vector y of dimension (1 + (n-1)*incy).
[in]	incy	Stride between consecutive elements of dy. incy > 0.

double magma_cblas_ddot	(	magma_int_t	n,
		const double *	x,
		magma_int_t	incx,
		const double *	y,
		magma_int_t	incy
	)

Returns

dot product (unconjugated) of vectors x and y; \( x^T y \).

To avoid dependence on CBLAS and incompatability issues between BLAS libraries, MAGMA uses its own implementation, following BLAS reference.

Parameters

[in]	n	Number of elements in vector x and y. n >= 0.
[in]	x	DOUBLE PRECISION array on CPU host. The n element vector x of dimension (1 + (n-1)*incx).
[in]	incx	Stride between consecutive elements of x. incx > 0.
[in]	y	DOUBLE PRECISION array on CPU host. The n element vector y of dimension (1 + (n-1)*incy).
[in]	incy	Stride between consecutive elements of dy. incy > 0.

float magma_cblas_sdot	(	magma_int_t	n,
		const float *	x,
		magma_int_t	incx,
		const float *	y,
		magma_int_t	incy
	)

Returns

dot product (unconjugated) of vectors x and y; \( x^T y \).

To avoid dependence on CBLAS and incompatability issues between BLAS libraries, MAGMA uses its own implementation, following BLAS reference.

Parameters

[in]	n	Number of elements in vector x and y. n >= 0.
[in]	x	REAL array on CPU host. The n element vector x of dimension (1 + (n-1)*incx).
[in]	incx	Stride between consecutive elements of x. incx > 0.
[in]	y	REAL array on CPU host. The n element vector y of dimension (1 + (n-1)*incy).
[in]	incy	Stride between consecutive elements of dy. incy > 0.

magmaDoubleComplex magma_cblas_zdotc	(	magma_int_t	n,
		const magmaDoubleComplex *	x,
		magma_int_t	incx,
		const magmaDoubleComplex *	y,
		magma_int_t	incy
	)

Returns dot product of vectors x and y; \( x^H y \).

To avoid dependence on CBLAS and incompatability issues between BLAS libraries, MAGMA uses its own implementation, following BLAS reference.

Parameters

[in]	n	Number of elements in vector x and y. n >= 0.
[in]	x	COMPLEX_16 array on CPU host. The n element vector x of dimension (1 + (n-1)*incx).
[in]	incx	Stride between consecutive elements of x. incx > 0.
[in]	y	COMPLEX_16 array on CPU host. The n element vector y of dimension (1 + (n-1)*incy).
[in]	incy	Stride between consecutive elements of dy. incy > 0.

magmaDoubleComplex magma_cblas_zdotu	(	magma_int_t	n,
		const magmaDoubleComplex *	x,
		magma_int_t	incx,
		const magmaDoubleComplex *	y,
		magma_int_t	incy
	)

Returns

dot product (unconjugated) of vectors x and y; \( x^T y \).

To avoid dependence on CBLAS and incompatability issues between BLAS libraries, MAGMA uses its own implementation, following BLAS reference.

Parameters

[in]	n	Number of elements in vector x and y. n >= 0.
[in]	x	COMPLEX_16 array on CPU host. The n element vector x of dimension (1 + (n-1)*incx).
[in]	incx	Stride between consecutive elements of x. incx > 0.
[in]	y	COMPLEX_16 array on CPU host. The n element vector y of dimension (1 + (n-1)*incy).
[in]	incy	Stride between consecutive elements of dy. incy > 0.

magmaFloatComplex magma_cdotc	(	magma_int_t	n,
		magmaFloatComplex_const_ptr	dx,
		magma_int_t	incx,
		magmaFloatComplex_const_ptr	dy,
		magma_int_t	incy,
		magma_queue_t	queue
	)

Returns

Dot product of vectors x and y; \( x^H y \).

Parameters

[in]	n	Number of elements in vector x and y. n >= 0.
[in]	dx	COMPLEX array on GPU device. The n element vector x of dimension (1 + (n-1)*incx).
[in]	incx	Stride between consecutive elements of dx. incx != 0.
[in]	dy	COMPLEX array on GPU device. The n element vector y of dimension (1 + (n-1)*incy).
[in]	incy	Stride between consecutive elements of dy. incy != 0.
[in]	queue	magma_queue_t Queue to execute in.

magmaFloatComplex magma_cdotu	(	magma_int_t	n,
		magmaFloatComplex_const_ptr	dx,
		magma_int_t	incx,
		magmaFloatComplex_const_ptr	dy,
		magma_int_t	incy,
		magma_queue_t	queue
	)

Returns

Dot product (unconjugated) of vectors x and y; \( x^T y \).

Parameters

[in]	n	Number of elements in vector x and y. n >= 0.
[in]	dx	COMPLEX array on GPU device. The n element vector x of dimension (1 + (n-1)*incx).
[in]	incx	Stride between consecutive elements of dx. incx != 0.
[in]	dy	COMPLEX array on GPU device. The n element vector y of dimension (1 + (n-1)*incy).
[in]	incy	Stride between consecutive elements of dy. incy != 0.
[in]	queue	magma_queue_t Queue to execute in.

double magma_ddot	(	magma_int_t	n,
		magmaDouble_const_ptr	dx,
		magma_int_t	incx,
		magmaDouble_const_ptr	dy,
		magma_int_t	incy,
		magma_queue_t	queue
	)

Returns

Dot product (unconjugated) of vectors x and y; \( x^T y \).

Parameters

[in]	n	Number of elements in vector x and y. n >= 0.
[in]	dx	DOUBLE PRECISION array on GPU device. The n element vector x of dimension (1 + (n-1)*incx).
[in]	incx	Stride between consecutive elements of dx. incx != 0.
[in]	dy	DOUBLE PRECISION array on GPU device. The n element vector y of dimension (1 + (n-1)*incy).
[in]	incy	Stride between consecutive elements of dy. incy != 0.
[in]	queue	magma_queue_t Queue to execute in.

float magma_sdot	(	magma_int_t	n,
		magmaFloat_const_ptr	dx,
		magma_int_t	incx,
		magmaFloat_const_ptr	dy,
		magma_int_t	incy,
		magma_queue_t	queue
	)

Returns

Dot product (unconjugated) of vectors x and y; \( x^T y \).

Parameters

[in]	n	Number of elements in vector x and y. n >= 0.
[in]	dx	REAL array on GPU device. The n element vector x of dimension (1 + (n-1)*incx).
[in]	incx	Stride between consecutive elements of dx. incx != 0.
[in]	dy	REAL array on GPU device. The n element vector y of dimension (1 + (n-1)*incy).
[in]	incy	Stride between consecutive elements of dy. incy != 0.
[in]	queue	magma_queue_t Queue to execute in.

magmaDoubleComplex magma_zdotc	(	magma_int_t	n,
		magmaDoubleComplex_const_ptr	dx,
		magma_int_t	incx,
		magmaDoubleComplex_const_ptr	dy,
		magma_int_t	incy,
		magma_queue_t	queue
	)

Returns

Dot product of vectors x and y; \( x^H y \).

Parameters

[in]	n	Number of elements in vector x and y. n >= 0.
[in]	dx	COMPLEX_16 array on GPU device. The n element vector x of dimension (1 + (n-1)*incx).
[in]	incx	Stride between consecutive elements of dx. incx != 0.
[in]	dy	COMPLEX_16 array on GPU device. The n element vector y of dimension (1 + (n-1)*incy).
[in]	incy	Stride between consecutive elements of dy. incy != 0.
[in]	queue	magma_queue_t Queue to execute in.

magmaDoubleComplex magma_zdotu	(	magma_int_t	n,
		magmaDoubleComplex_const_ptr	dx,
		magma_int_t	incx,
		magmaDoubleComplex_const_ptr	dy,
		magma_int_t	incy,
		magma_queue_t	queue
	)

Returns

Dot product (unconjugated) of vectors x and y; \( x^T y \).

Parameters

[in]	n	Number of elements in vector x and y. n >= 0.
[in]	dx	COMPLEX_16 array on GPU device. The n element vector x of dimension (1 + (n-1)*incx).
[in]	incx	Stride between consecutive elements of dx. incx != 0.
[in]	dy	COMPLEX_16 array on GPU device. The n element vector y of dimension (1 + (n-1)*incy).
[in]	incy	Stride between consecutive elements of dy. incy != 0.
[in]	queue	magma_queue_t Queue to execute in.