asum: Sum vector

\( \sum_i |x_i| \) More...

Functions
float	magma_cblas_scasum (magma_int_t n, const magmaFloatComplex *x, magma_int_t incx)
double	magma_cblas_dasum (magma_int_t n, const double *x, magma_int_t incx)
float	magma_cblas_sasum (magma_int_t n, const float *x, magma_int_t incx)
double	magma_cblas_dzasum (magma_int_t n, const magmaDoubleComplex *x, magma_int_t incx)
float	magma_scasum (magma_int_t n, magmaFloatComplex_const_ptr dx, magma_int_t incx, magma_queue_t queue)
double	magma_dasum (magma_int_t n, magmaDouble_const_ptr dx, magma_int_t incx, magma_queue_t queue)
float	magma_sasum (magma_int_t n, magmaFloat_const_ptr dx, magma_int_t incx, magma_queue_t queue)
double	magma_dzasum (magma_int_t n, magmaDoubleComplex_const_ptr dx, magma_int_t incx, magma_queue_t queue)

Detailed Description

\( \sum_i |x_i| \)

Function Documentation

float magma_cblas_scasum	(	magma_int_t	n,
		const magmaFloatComplex *	x,
		magma_int_t	incx
	)

Returns

Sum of absolute values of vector x; \( \sum_i | real(x_i) | + | imag(x_i) | \).

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. 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.

double magma_cblas_dasum	(	magma_int_t	n,
		const double *	x,
		magma_int_t	incx
	)

Returns

Sum of absolute values of vector x; \( \sum_i | real(x_i) | + | imag(x_i) | \).

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. 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.

float magma_cblas_sasum	(	magma_int_t	n,
		const float *	x,
		magma_int_t	incx
	)

Returns

Sum of absolute values of vector x; \( \sum_i | real(x_i) | + | imag(x_i) | \).

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. 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.

double magma_cblas_dzasum	(	magma_int_t	n,
		const magmaDoubleComplex *	x,
		magma_int_t	incx
	)

Returns

Sum of absolute values of vector x; \( \sum_i | real(x_i) | + | imag(x_i) | \).

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. 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.

float magma_scasum	(	magma_int_t	n,
		magmaFloatComplex_const_ptr	dx,
		magma_int_t	incx,
		magma_queue_t	queue
	)

Returns

Sum of absolute values of vector x; \( \sum_i | real(x_i) | + | imag(x_i) | \).

Parameters

[in]	n	Number of elements in vector x. 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]	queue	magma_queue_t Queue to execute in.

double magma_dasum	(	magma_int_t	n,
		magmaDouble_const_ptr	dx,
		magma_int_t	incx,
		magma_queue_t	queue
	)

Returns

Sum of absolute values of vector x; \( \sum_i | real(x_i) | + | imag(x_i) | \).

Parameters

[in]	n	Number of elements in vector x. 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]	queue	magma_queue_t Queue to execute in.

float magma_sasum	(	magma_int_t	n,
		magmaFloat_const_ptr	dx,
		magma_int_t	incx,
		magma_queue_t	queue
	)

Returns

Sum of absolute values of vector x; \( \sum_i | real(x_i) | + | imag(x_i) | \).

Parameters

[in]	n	Number of elements in vector x. 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]	queue	magma_queue_t Queue to execute in.

double magma_dzasum	(	magma_int_t	n,
		magmaDoubleComplex_const_ptr	dx,
		magma_int_t	incx,
		magma_queue_t	queue
	)

Returns

Sum of absolute values of vector x; \( \sum_i | real(x_i) | + | imag(x_i) | \).

Parameters

[in]	n	Number of elements in vector x. 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]	queue	magma_queue_t Queue to execute in.