MAGMA  2.3.0 Matrix Algebra for GPU and Multicore Architectures

$$x^T y$$ 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)

Returns dot product of vectors x and y; $$x^H y$$. More...

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)

## 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.
Dot product of vectors x and y; $$x^H y$$.
Dot product (unconjugated) of vectors x and y; $$x^T y$$.