af_max

the C interface for max More...

All Elements
Parameters [out] count Scalar and on host [in] numel The number of elements in the vector. [in] mat The input stream
afError	af_max_vector_S (float *h_dst, unsigned numel, const float *d_src)
	Maximum value of a single precision vector. More...
afError	af_max_vector_B (bool *h_dst, unsigned numel, const bool *d_src)
	Maximum value of a boolean vector. More...
afError	af_max_vector_I (int *h_dst, unsigned numel, const int *d_src)
	Maximum value of a 32-bit signed integer vector. More...
afError	af_max_vector_U (unsigned *h_dst, unsigned numel, const unsigned *d_src)
	Maximum value of a 32-bit unsigned integer vector. More...
afError	af_max_vector_C (cfloat *h_dst, unsigned numel, const cfloat *d_src)
	Maximum value of a single precision, complex vector. More...
afError	af_max_vector_D (double *h_dst, unsigned numel, const double *d_src)
	Maximum value of a double precision vector. More...
afError	af_max_vector_Z (cdouble *h_dst, unsigned numel, const cdouble *d_src)
	Maximum value of a double precision, complex vector. More...
afError	af_imax_vector_S (float *h_dst, int *h_idx, unsigned numel, const float *d_src, bool is_baseone=false)
	Indexed maximum value of a single precision vector. More...
afError	af_imax_vector_I (int *h_dst, int *h_idx, unsigned numel, const int *d_src, bool is_baseone=false)
	Indexed maximum value of a 32-bit signed integer vector. More...
afError	af_imax_vector_U (unsigned *h_dst, int *h_idx, unsigned numel, const unsigned *d_src, bool is_baseone=false)
	Indexed maximum value of a 32-bit unsigned integer vector. More...
afError	af_imax_vector_B (bool *h_dst, int *h_idx, unsigned numel, const bool *d_src, bool is_baseone=false)
	Indexed maximum value of a boolean vector. More...
afError	af_imax_vector_C (cfloat *h_dst, int *h_idx, unsigned numel, const cfloat *d_src, bool is_baseone=false)
	Indexed maximum value of a single precision, complex vector. More...
afError	af_imax_vector_D (double *h_dst, int *h_idx, unsigned numel, const double *d_src, bool is_baseone=false)
	Indexed maximum value of a double precision vector. More...
afError	af_imax_vector_Z (cdouble *h_dst, int *h_idx, unsigned numel, const cdouble *d_src, bool is_baseone=false)
	Indexed maximum value of a double precision, complex vector. More...

Along a Dimension
Parameters [out] count vector and on device [in] numel The number of elements in the vector. [in] mat The input stream [in] batch The number of input tiles.
afError	af_max_S (float *d_dst, unsigned ndims, const unsigned *dims, const float *d_src, int dim)
	Maximum value along a dimension in single precision matrix. More...
afError	af_max_B (bool *d_dst, unsigned ndims, const unsigned *dims, const bool *d_src, int dim)
	Maximum value along a dimension in boolean matrix. More...
afError	af_max_I (int *d_dst, unsigned ndims, const unsigned *dims, const int *d_src, int dim)
	Maximum value along a dimension in 32-bit signed integer matrix. More...
afError	af_max_U (unsigned *d_dst, unsigned ndims, const unsigned *dims, const unsigned *d_src, int dim)
	Maximum value along a dimension in 32-bit unsigned integer matrix. More...
afError	af_max_C (cfloat *d_dst, unsigned ndims, const unsigned *dims, const cfloat *d_src, int dim)
	Maximum value along a dimension in single precision, complex matrix. More...
afError	af_max_D (double *d_dst, unsigned ndims, const unsigned *dims, const double *d_src, int dim)
	Maximum value along a dimension in double precision matrix. More...
afError	af_max_Z (cdouble *d_dst, unsigned ndims, const unsigned *dims, const cdouble *d_src, int dim)
	Maximum value along a dimension in double precision, complex matrix. More...
afError	af_imax_S (float *d_dst, int *d_idx, unsigned ndims, const unsigned *dims, const float *d_src, int dim, bool is_baseone=false)
	Indexed maximum value along a dimension in single precision matrix. More...
afError	af_imax_I (int *d_dst, int *d_idx, unsigned ndims, const unsigned *dims, const int *d_src, int dim, bool is_baseone=false)
	Indexed maximum value along a dimension in 32-bit signed integer matrix. More...
afError	af_imax_U (unsigned *d_dst, int *d_idx, unsigned ndims, const unsigned *dims, const unsigned *d_src, int dim, bool is_baseone=false)
	Indexed maximum value along a dimension in 32-bit signed integer matrix. More...
afError	af_imax_B (bool *d_dst, int *d_idx, unsigned ndims, const unsigned *dims, const bool *d_src, int dim, bool is_baseone=false)
	Indexed maximum value along a dimension in boolean matrix. More...
afError	af_imax_C (cfloat *d_dst, int *d_idx, unsigned ndims, const unsigned *dims, const cfloat *d_src, int dim, bool is_baseone=false)
	Indexed maximum value along a dimension in single precision, cplx matrix. More...
afError	af_imax_D (double *d_dst, int *d_idx, unsigned ndims, const unsigned *dims, const double *d_src, int dim, bool is_baseone=false)
	Indexed maximum value along a dimension in double precision matrix. More...
afError	af_imax_Z (cdouble *d_dst, int *d_idx, unsigned ndims, const unsigned *dims, const cdouble *d_src, int dim, bool is_baseone=false)
	Indexed maximum value along a dimension in double precision, cplx matrix. More...

Detailed Description

the C interface for max

Returns the maximum value of an array, or if specified, the
maximum value of each dimension of the array. Max can also
return the indices (0-based) where these elements are located.

int hx[] = { -3, -5, 2, -9 };
// hx = -3  2
//      -5 -9
array x(2,2, hx); // 2x2 matrix
float value;
int index;
max(&value, &index, x);
printf("%g,%d\n", value, index)); // 2,2

Return the maximum regardless of dimension:

int hx[] = { -3, -5, 2, -9 };
array x1(2,2, hx); // 2x2 matrix
array x2(4,1, hx); // 4x1 vector
printf("%d,%d\n", max<int>(x1), max<int>(x2)); // 2, 2

Return maximum and indices along a given dimension

float ha[] = {1, 2, 3, 4};
array in = array(2, 2, ha);

// Storage for the results
array m, i;

// max along columns
max(m, i, in, 0);
print(m);
print(i);
// m = 2.0000    4.0000
// i = 1         1

// max along rows
max(m, i, in, 1);
print(m);
print(i);

// m = 3.0000
//     4.0000

// i = 1
//     1

Function Documentation

afError af_max_vector_S	(	float *	h_dst,
		unsigned	numel,
		const float *	d_src
	)

Maximum value of a single precision vector.

afError af_max_vector_B	(	bool *	h_dst,
		unsigned	numel,
		const bool *	d_src
	)

Maximum value of a boolean vector.

afError af_max_vector_I	(	int *	h_dst,
		unsigned	numel,
		const int *	d_src
	)

Maximum value of a 32-bit signed integer vector.

afError af_max_vector_U	(	unsigned *	h_dst,
		unsigned	numel,
		const unsigned *	d_src
	)

Maximum value of a 32-bit unsigned integer vector.

afError af_max_vector_C	(	cfloat *	h_dst,
		unsigned	numel,
		const cfloat *	d_src
	)

Maximum value of a single precision, complex vector.

afError af_max_vector_D	(	double *	h_dst,
		unsigned	numel,
		const double *	d_src
	)

Maximum value of a double precision vector.

afError af_max_vector_Z	(	cdouble *	h_dst,
		unsigned	numel,
		const cdouble *	d_src
	)

Maximum value of a double precision, complex vector.

afError af_imax_vector_S	(	float *	h_dst,
		int *	h_idx,
		unsigned	numel,
		const float *	d_src,
		bool	is_baseone = false
	)

Indexed maximum value of a single precision vector.

afError af_imax_vector_I	(	int *	h_dst,
		int *	h_idx,
		unsigned	numel,
		const int *	d_src,
		bool	is_baseone = false
	)

Indexed maximum value of a 32-bit signed integer vector.

afError af_imax_vector_U	(	unsigned *	h_dst,
		int *	h_idx,
		unsigned	numel,
		const unsigned *	d_src,
		bool	is_baseone = false
	)

Indexed maximum value of a 32-bit unsigned integer vector.

afError af_imax_vector_B	(	bool *	h_dst,
		int *	h_idx,
		unsigned	numel,
		const bool *	d_src,
		bool	is_baseone = false
	)

Indexed maximum value of a boolean vector.

afError af_imax_vector_C	(	cfloat *	h_dst,
		int *	h_idx,
		unsigned	numel,
		const cfloat *	d_src,
		bool	is_baseone = false
	)

Indexed maximum value of a single precision, complex vector.

afError af_imax_vector_D	(	double *	h_dst,
		int *	h_idx,
		unsigned	numel,
		const double *	d_src,
		bool	is_baseone = false
	)

Indexed maximum value of a double precision vector.

afError af_imax_vector_Z	(	cdouble *	h_dst,
		int *	h_idx,
		unsigned	numel,
		const cdouble *	d_src,
		bool	is_baseone = false
	)

Indexed maximum value of a double precision, complex vector.

afError af_max_S	(	float *	d_dst,
		unsigned	ndims,
		const unsigned *	dims,
		const float *	d_src,
		int	dim
	)

Maximum value along a dimension in single precision matrix.

afError af_max_B	(	bool *	d_dst,
		unsigned	ndims,
		const unsigned *	dims,
		const bool *	d_src,
		int	dim
	)

Maximum value along a dimension in boolean matrix.

afError af_max_I	(	int *	d_dst,
		unsigned	ndims,
		const unsigned *	dims,
		const int *	d_src,
		int	dim
	)

Maximum value along a dimension in 32-bit signed integer matrix.

afError af_max_U	(	unsigned *	d_dst,
		unsigned	ndims,
		const unsigned *	dims,
		const unsigned *	d_src,
		int	dim
	)

Maximum value along a dimension in 32-bit unsigned integer matrix.

afError af_max_C	(	cfloat *	d_dst,
		unsigned	ndims,
		const unsigned *	dims,
		const cfloat *	d_src,
		int	dim
	)

Maximum value along a dimension in single precision, complex matrix.

afError af_max_D	(	double *	d_dst,
		unsigned	ndims,
		const unsigned *	dims,
		const double *	d_src,
		int	dim
	)

Maximum value along a dimension in double precision matrix.

afError af_max_Z	(	cdouble *	d_dst,
		unsigned	ndims,
		const unsigned *	dims,
		const cdouble *	d_src,
		int	dim
	)

Maximum value along a dimension in double precision, complex matrix.

afError af_imax_S	(	float *	d_dst,
		int *	d_idx,
		unsigned	ndims,
		const unsigned *	dims,
		const float *	d_src,
		int	dim,
		bool	is_baseone = false
	)

Indexed maximum value along a dimension in single precision matrix.

afError af_imax_I	(	int *	d_dst,
		int *	d_idx,
		unsigned	ndims,
		const unsigned *	dims,
		const int *	d_src,
		int	dim,
		bool	is_baseone = false
	)

Indexed maximum value along a dimension in 32-bit signed integer matrix.

afError af_imax_U	(	unsigned *	d_dst,
		int *	d_idx,
		unsigned	ndims,
		const unsigned *	dims,
		const unsigned *	d_src,
		int	dim,
		bool	is_baseone = false
	)

Indexed maximum value along a dimension in 32-bit signed integer matrix.

afError af_imax_B	(	bool *	d_dst,
		int *	d_idx,
		unsigned	ndims,
		const unsigned *	dims,
		const bool *	d_src,
		int	dim,
		bool	is_baseone = false
	)

Indexed maximum value along a dimension in boolean matrix.

afError af_imax_C	(	cfloat *	d_dst,
		int *	d_idx,
		unsigned	ndims,
		const unsigned *	dims,
		const cfloat *	d_src,
		int	dim,
		bool	is_baseone = false
	)

Indexed maximum value along a dimension in single precision, cplx matrix.

afError af_imax_D	(	double *	d_dst,
		int *	d_idx,
		unsigned	ndims,
		const unsigned *	dims,
		const double *	d_src,
		int	dim,
		bool	is_baseone = false
	)

Indexed maximum value along a dimension in double precision matrix.

afError af_imax_Z	(	cdouble *	d_dst,
		int *	d_idx,
		unsigned	ndims,
		const unsigned *	dims,
		const cdouble *	d_src,
		int	dim,
		bool	is_baseone = false
	)

Indexed maximum value along a dimension in double precision, cplx matrix.