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countTruthy

Count the number of truthy elements in an ndarray.

Usage

var countTruthy = require( '@stdlib/ndarray/base/count-truthy' );

countTruthy( arrays )

Counts the number of truthy elements in an ndarray.

var Float64Array = require( '@stdlib/array/float64' );

// Create a data buffer:
var xbuf = new Float64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0, 11.0, 12.0 ] );

// Define the shape of the input array:
var shape = [ 3, 1, 2 ];

// Define the array strides:
var sx = [ 4, 4, 1 ];

// Define the index offset:
var ox = 0;

// Create the input ndarray-like object:
var x = {
    'dtype': 'float64',
    'data': xbuf,
    'shape': shape,
    'strides': sx,
    'offset': ox,
    'order': 'row-major'
};

// Perform operation:
var out = countTruthy( [ x ] );
// returns 6

The function accepts the following arguments:

  • arrays: array-like object containing an input ndarray.

The provided ndarray should be an object with the following properties:

  • dtype: data type.
  • data: data buffer.
  • shape: dimensions.
  • strides: stride lengths.
  • offset: index offset.
  • order: specifies whether an ndarray is row-major (C-style) or column major (Fortran-style).

Notes

  • For very high-dimensional ndarrays which are non-contiguous, one should consider copying the underlying data to contiguous memory before performing the operation in order to achieve better performance.

Examples

var bernoulli = require( '@stdlib/random/array/bernoulli' );
var ndarray2array = require( '@stdlib/ndarray/base/to-array' );
var countTruthy = require( '@stdlib/ndarray/base/count-truthy' );

var x = {
    'dtype': 'generic',
    'data': bernoulli( 10, 0.75, {
        'dtype': 'generic'
    }),
    'shape': [ 5, 2 ],
    'strides': [ 2, 1 ],
    'offset': 0,
    'order': 'row-major'
};
console.log( ndarray2array( x.data, x.shape, x.strides, x.offset, x.order ) );

var out = countTruthy( [ x ] );
console.log( out );

C APIs

Character codes for data types:

  • x: bool (boolean).
  • z: complex128 (double-precision floating-point complex number).
  • c: complex64 (single-precision floating-point complex number).
  • f: float32 (single-precision floating-point number).
  • d: float64 (double-precision floating-point number).
  • k: int16 (signed 16-bit integer).
  • i: int32 (signed 32-bit integer).
  • s: int8 (signed 8-bit integer).
  • t: uint16 (unsigned 16-bit integer).
  • u: uint32 (unsigned 32-bit integer).
  • b: uint8 (unsigned 8-bit integer).

Function name suffix naming convention:

stdlib_ndarray_count_truthy_<input_data_type>_<output_data_type>

For example,

void stdlib_ndarray_count_truthy_d_i(...) {...}

is a function which accepts one double-precision floating-point input ndarray and one signed 32-bit integer output ndarray.

Usage

#include "stdlib/ndarray/base/count_truthy.h"

stdlib_ndarray_count_truthy_b_i( *arrays[], *data )

Counts the number of truthy elements in an input ndarray.

#include "stdlib/ndarray/dtypes.h"
#include "stdlib/ndarray/index_modes.h"
#include "stdlib/ndarray/orders.h"
#include "stdlib/ndarray/ctor.h"
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>

// Define the ndarray data types:
enum STDLIB_NDARRAY_DTYPE xdtype = STDLIB_NDARRAY_UINT8;
enum STDLIB_NDARRAY_DTYPE ydtype = STDLIB_NDARRAY_INT32;

// Create underlying byte arrays:
uint8_t xbuf[] = { 0, 0, 0, 0 };
uint8_t ybuf[] = { 0, 0, 0, 0 };

// Define the number of dimensions:
int64_t ndims = 2;

// Define the array shapes:
int64_t shx[] = { 2, 2 };
int64_t *shy = NULL;

// Define the strides:
int64_t sx[] = { 2, 1 };
int64_t sy[] = { 0 };

// Define the index offsets:
int64_t ox = 0;
int64_t oy = 0;

// Define the array order:
enum STDLIB_NDARRAY_ORDER order = STDLIB_NDARRAY_ROW_MAJOR;

// Specify the index mode:
enum STDLIB_NDARRAY_INDEX_MODE imode = STDLIB_NDARRAY_INDEX_ERROR;

// Specify the subscript index modes:
int8_t submodes[] = { imode };
int64_t nsubmodes = 1;

// Create an input ndarray:
struct ndarray *x = stdlib_ndarray_allocate( xdtype, xbuf, ndims, shx, sx, ox, order, imode, nsubmodes, submodes );
if ( x == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an output ndarray:
struct ndarray *y = stdlib_ndarray_allocate( ydtype, ybuf, 0, shy, sy, oy, order, imode, nsubmodes, submodes );
if ( y == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an array containing the ndarrays:
struct ndarray *arrays[] = { x, y };

// Perform operation:
int8_t status = stdlib_ndarray_count_truthy_b_i( arrays, NULL );
if ( status != 0 ) {
    fprintf( stderr, "Error during computation.\n" );
    exit( EXIT_FAILURE );
}

// ...

// Free allocated memory:
stdlib_ndarray_free( x );
stdlib_ndarray_free( y );

The function accepts the following arguments:

  • arrays: [inout] struct ndarray** array whose first element is a pointer to an input ndarray and whose second element is a pointer to a zero-dimensional output ndarray.
  • data: [in] void* function data. This argument is unused and should be a NULL pointer.
int8_t stdlib_ndarray_count_truthy_b_i( struct ndarray *arrays[], void *data );

stdlib_ndarray_count_truthy_b_l( *arrays[], *data )

Counts the number of truthy elements in an input ndarray.

#include "stdlib/ndarray/dtypes.h"
#include "stdlib/ndarray/index_modes.h"
#include "stdlib/ndarray/orders.h"
#include "stdlib/ndarray/ctor.h"
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>

// Define the ndarray data types:
enum STDLIB_NDARRAY_DTYPE xdtype = STDLIB_NDARRAY_UINT8;
enum STDLIB_NDARRAY_DTYPE ydtype = STDLIB_NDARRAY_INT64;

// Create underlying byte arrays:
uint8_t xbuf[] = { 0, 0, 0, 0 };
uint8_t ybuf[] = { 0, 0, 0, 0, 0, 0, 0, 0 };

// Define the number of dimensions:
int64_t ndims = 2;

// Define the array shapes:
int64_t shx[] = { 2, 2 };
int64_t *shy = NULL;

// Define the strides:
int64_t sx[] = { 2, 1 };
int64_t sy[] = { 0 };

// Define the index offsets:
int64_t ox = 0;
int64_t oy = 0;

// Define the array order:
enum STDLIB_NDARRAY_ORDER order = STDLIB_NDARRAY_ROW_MAJOR;

// Specify the index mode:
enum STDLIB_NDARRAY_INDEX_MODE imode = STDLIB_NDARRAY_INDEX_ERROR;

// Specify the subscript index modes:
int8_t submodes[] = { imode };
int64_t nsubmodes = 1;

// Create an input ndarray:
struct ndarray *x = stdlib_ndarray_allocate( xdtype, xbuf, ndims, shx, sx, ox, order, imode, nsubmodes, submodes );
if ( x == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an output ndarray:
struct ndarray *y = stdlib_ndarray_allocate( ydtype, ybuf, 0, shy, sy, oy, order, imode, nsubmodes, submodes );
if ( y == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an array containing the ndarrays:
struct ndarray *arrays[] = { x, y };

// Perform operation:
int8_t status = stdlib_ndarray_count_truthy_b_l( arrays, NULL );
if ( status != 0 ) {
    fprintf( stderr, "Error during computation.\n" );
    exit( EXIT_FAILURE );
}

// ...

// Free allocated memory:
stdlib_ndarray_free( x );
stdlib_ndarray_free( y );

The function accepts the following arguments:

  • arrays: [inout] struct ndarray** array whose first element is a pointer to an input ndarray and whose second element is a pointer to a zero-dimensional output ndarray.
  • data: [in] void* function data. This argument is unused and should be a NULL pointer.
int8_t stdlib_ndarray_count_truthy_b_l( struct ndarray *arrays[], void *data );

stdlib_ndarray_count_truthy_c_i( *arrays[], *data )

Counts the number of truthy elements in an input ndarray.

#include "stdlib/ndarray/dtypes.h"
#include "stdlib/ndarray/index_modes.h"
#include "stdlib/ndarray/orders.h"
#include "stdlib/ndarray/ctor.h"
#include "stdlib/complex/float32/ctor.h"
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>

// Define the ndarray data types:
enum STDLIB_NDARRAY_DTYPE xdtype = STDLIB_NDARRAY_COMPLEX64;
enum STDLIB_NDARRAY_DTYPE ydtype = STDLIB_NDARRAY_INT32;

// Create underlying byte arrays:
uint8_t xbuf[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
uint8_t ybuf[] = { 0, 0, 0, 0 };

// Define the number of dimensions:
int64_t ndims = 2;

// Define the array shapes:
int64_t shx[] = { 2, 2 };
int64_t *shy = NULL;

// Define the strides:
int64_t sx[] = { 16, 8 };
int64_t sy[] = { 0 };

// Define the index offsets:
int64_t ox = 0;
int64_t oy = 0;

// Define the array order:
enum STDLIB_NDARRAY_ORDER order = STDLIB_NDARRAY_ROW_MAJOR;

// Specify the index mode:
enum STDLIB_NDARRAY_INDEX_MODE imode = STDLIB_NDARRAY_INDEX_ERROR;

// Specify the subscript index modes:
int8_t submodes[] = { imode };
int64_t nsubmodes = 1;

// Create an input ndarray:
struct ndarray *x = stdlib_ndarray_allocate( xdtype, xbuf, ndims, shx, sx, ox, order, imode, nsubmodes, submodes );
if ( x == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an output ndarray:
struct ndarray *y = stdlib_ndarray_allocate( ydtype, ybuf, 0, shy, sy, oy, order, imode, nsubmodes, submodes );
if ( y == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an array containing the ndarrays:
struct ndarray *arrays[] = { x, y };

// Perform operation:
int8_t status = stdlib_ndarray_count_truthy_c_i( arrays, NULL );
if ( status != 0 ) {
    fprintf( stderr, "Error during computation.\n" );
    exit( EXIT_FAILURE );
}

// ...

// Free allocated memory:
stdlib_ndarray_free( x );
stdlib_ndarray_free( y );

The function accepts the following arguments:

  • arrays: [inout] struct ndarray** array whose first element is a pointer to an input ndarray and whose second element is a pointer to a zero-dimensional output ndarray.
  • data: [in] void* function data. This argument is unused and should be a NULL pointer.
int8_t stdlib_ndarray_count_truthy_c_i( struct ndarray *arrays[], void *data );

stdlib_ndarray_count_truthy_c_l( *arrays[], *data )

Counts the number of truthy elements in an input ndarray.

#include "stdlib/ndarray/dtypes.h"
#include "stdlib/ndarray/index_modes.h"
#include "stdlib/ndarray/orders.h"
#include "stdlib/ndarray/ctor.h"
#include "stdlib/complex/float32/ctor.h"
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>

// Define the ndarray data types:
enum STDLIB_NDARRAY_DTYPE xdtype = STDLIB_NDARRAY_COMPLEX64;
enum STDLIB_NDARRAY_DTYPE ydtype = STDLIB_NDARRAY_INT64;

// Create underlying byte arrays:
uint8_t xbuf[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
uint8_t ybuf[] = { 0, 0, 0, 0, 0, 0, 0, 0 };

// Define the number of dimensions:
int64_t ndims = 2;

// Define the array shapes:
int64_t shx[] = { 2, 2 };
int64_t *shy = NULL;

// Define the strides:
int64_t sx[] = { 16, 8 };
int64_t sy[] = { 0 };

// Define the index offsets:
int64_t ox = 0;
int64_t oy = 0;

// Define the array order:
enum STDLIB_NDARRAY_ORDER order = STDLIB_NDARRAY_ROW_MAJOR;

// Specify the index mode:
enum STDLIB_NDARRAY_INDEX_MODE imode = STDLIB_NDARRAY_INDEX_ERROR;

// Specify the subscript index modes:
int8_t submodes[] = { imode };
int64_t nsubmodes = 1;

// Create an input ndarray:
struct ndarray *x = stdlib_ndarray_allocate( xdtype, xbuf, ndims, shx, sx, ox, order, imode, nsubmodes, submodes );
if ( x == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an output ndarray:
struct ndarray *y = stdlib_ndarray_allocate( ydtype, ybuf, 0, shy, sy, oy, order, imode, nsubmodes, submodes );
if ( y == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an array containing the ndarrays:
struct ndarray *arrays[] = { x, y };

// Perform operation:
int8_t status = stdlib_ndarray_count_truthy_c_l( arrays, NULL );
if ( status != 0 ) {
    fprintf( stderr, "Error during computation.\n" );
    exit( EXIT_FAILURE );
}

// ...

// Free allocated memory:
stdlib_ndarray_free( x );
stdlib_ndarray_free( y );

The function accepts the following arguments:

  • arrays: [inout] struct ndarray** array whose first element is a pointer to an input ndarray and whose second element is a pointer to a zero-dimensional output ndarray.
  • data: [in] void* function data. This argument is unused and should be a NULL pointer.
int8_t stdlib_ndarray_count_truthy_c_l( struct ndarray *arrays[], void *data );

stdlib_ndarray_count_truthy_d_i( *arrays[], *data )

Counts the number of truthy elements in an input ndarray.

#include "stdlib/ndarray/dtypes.h"
#include "stdlib/ndarray/index_modes.h"
#include "stdlib/ndarray/orders.h"
#include "stdlib/ndarray/ctor.h"
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>

// Define the ndarray data types:
enum STDLIB_NDARRAY_DTYPE xdtype = STDLIB_NDARRAY_FLOAT64;
enum STDLIB_NDARRAY_DTYPE ydtype = STDLIB_NDARRAY_INT32;

// Create underlying byte arrays:
uint8_t xbuf[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
uint8_t ybuf[] = { 0, 0, 0, 0 };

// Define the number of dimensions:
int64_t ndims = 2;

// Define the array shapes:
int64_t shx[] = { 2, 2 };
int64_t *shy = NULL;

// Define the strides:
int64_t sx[] = { 16, 8 };
int64_t sy[] = { 0 };

// Define the index offsets:
int64_t ox = 0;
int64_t oy = 0;

// Define the array order:
enum STDLIB_NDARRAY_ORDER order = STDLIB_NDARRAY_ROW_MAJOR;

// Specify the index mode:
enum STDLIB_NDARRAY_INDEX_MODE imode = STDLIB_NDARRAY_INDEX_ERROR;

// Specify the subscript index modes:
int8_t submodes[] = { imode };
int64_t nsubmodes = 1;

// Create an input ndarray:
struct ndarray *x = stdlib_ndarray_allocate( xdtype, xbuf, ndims, shx, sx, ox, order, imode, nsubmodes, submodes );
if ( x == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an output ndarray:
struct ndarray *y = stdlib_ndarray_allocate( ydtype, ybuf, 0, shy, sy, oy, order, imode, nsubmodes, submodes );
if ( y == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an array containing the ndarrays:
struct ndarray *arrays[] = { x, y };

// Perform operation:
int8_t status = stdlib_ndarray_count_truthy_d_i( arrays, NULL );
if ( status != 0 ) {
    fprintf( stderr, "Error during computation.\n" );
    exit( EXIT_FAILURE );
}

// ...

// Free allocated memory:
stdlib_ndarray_free( x );
stdlib_ndarray_free( y );

The function accepts the following arguments:

  • arrays: [inout] struct ndarray** array whose first element is a pointer to an input ndarray and whose second element is a pointer to a zero-dimensional output ndarray.
  • data: [in] void* function data. This argument is unused and should be a NULL pointer.
int8_t stdlib_ndarray_count_truthy_d_i( struct ndarray *arrays[], void *data );

stdlib_ndarray_count_truthy_d_l( *arrays[], *data )

Counts the number of truthy elements in an input ndarray.

#include "stdlib/ndarray/dtypes.h"
#include "stdlib/ndarray/index_modes.h"
#include "stdlib/ndarray/orders.h"
#include "stdlib/ndarray/ctor.h"
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>

// Define the ndarray data types:
enum STDLIB_NDARRAY_DTYPE xdtype = STDLIB_NDARRAY_FLOAT64;
enum STDLIB_NDARRAY_DTYPE ydtype = STDLIB_NDARRAY_INT64;

// Create underlying byte arrays:
uint8_t xbuf[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
uint8_t ybuf[] = { 0, 0, 0, 0, 0, 0, 0, 0 };

// Define the number of dimensions:
int64_t ndims = 2;

// Define the array shapes:
int64_t shx[] = { 2, 2 };
int64_t *shy = NULL;

// Define the strides:
int64_t sx[] = { 16, 8 };
int64_t sy[] = { 0 };

// Define the index offsets:
int64_t ox = 0;
int64_t oy = 0;

// Define the array order:
enum STDLIB_NDARRAY_ORDER order = STDLIB_NDARRAY_ROW_MAJOR;

// Specify the index mode:
enum STDLIB_NDARRAY_INDEX_MODE imode = STDLIB_NDARRAY_INDEX_ERROR;

// Specify the subscript index modes:
int8_t submodes[] = { imode };
int64_t nsubmodes = 1;

// Create an input ndarray:
struct ndarray *x = stdlib_ndarray_allocate( xdtype, xbuf, ndims, shx, sx, ox, order, imode, nsubmodes, submodes );
if ( x == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an output ndarray:
struct ndarray *y = stdlib_ndarray_allocate( ydtype, ybuf, 0, shy, sy, oy, order, imode, nsubmodes, submodes );
if ( y == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an array containing the ndarrays:
struct ndarray *arrays[] = { x, y };

// Perform operation:
int8_t status = stdlib_ndarray_count_truthy_d_l( arrays, NULL );
if ( status != 0 ) {
    fprintf( stderr, "Error during computation.\n" );
    exit( EXIT_FAILURE );
}

// ...

// Free allocated memory:
stdlib_ndarray_free( x );
stdlib_ndarray_free( y );

The function accepts the following arguments:

  • arrays: [inout] struct ndarray** array whose first element is a pointer to an input ndarray and whose second element is a pointer to a zero-dimensional output ndarray.
  • data: [in] void* function data. This argument is unused and should be a NULL pointer.
int8_t stdlib_ndarray_count_truthy_d_l( struct ndarray *arrays[], void *data );

stdlib_ndarray_count_truthy_f_i( *arrays[], *data )

Counts the number of truthy elements in an input ndarray.

#include "stdlib/ndarray/dtypes.h"
#include "stdlib/ndarray/index_modes.h"
#include "stdlib/ndarray/orders.h"
#include "stdlib/ndarray/ctor.h"
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>

// Define the ndarray data types:
enum STDLIB_NDARRAY_DTYPE xdtype = STDLIB_NDARRAY_FLOAT32;
enum STDLIB_NDARRAY_DTYPE ydtype = STDLIB_NDARRAY_INT32;

// Create underlying byte arrays:
uint8_t xbuf[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
uint8_t ybuf[] = { 0, 0, 0, 0 };

// Define the number of dimensions:
int64_t ndims = 2;

// Define the array shapes:
int64_t shx[] = { 2, 2 };
int64_t *shy = NULL;

// Define the strides:
int64_t sx[] = { 8, 4 };
int64_t sy[] = { 0 };

// Define the index offsets:
int64_t ox = 0;
int64_t oy = 0;

// Define the array order:
enum STDLIB_NDARRAY_ORDER order = STDLIB_NDARRAY_ROW_MAJOR;

// Specify the index mode:
enum STDLIB_NDARRAY_INDEX_MODE imode = STDLIB_NDARRAY_INDEX_ERROR;

// Specify the subscript index modes:
int8_t submodes[] = { imode };
int64_t nsubmodes = 1;

// Create an input ndarray:
struct ndarray *x = stdlib_ndarray_allocate( xdtype, xbuf, ndims, shx, sx, ox, order, imode, nsubmodes, submodes );
if ( x == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an output ndarray:
struct ndarray *y = stdlib_ndarray_allocate( ydtype, ybuf, 0, shy, sy, oy, order, imode, nsubmodes, submodes );
if ( y == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an array containing the ndarrays:
struct ndarray *arrays[] = { x, y };

// Perform operation:
int8_t status = stdlib_ndarray_count_truthy_f_i( arrays, NULL );
if ( status != 0 ) {
    fprintf( stderr, "Error during computation.\n" );
    exit( EXIT_FAILURE );
}

// ...

// Free allocated memory:
stdlib_ndarray_free( x );
stdlib_ndarray_free( y );

The function accepts the following arguments:

  • arrays: [inout] struct ndarray** array whose first element is a pointer to an input ndarray and whose second element is a pointer to a zero-dimensional output ndarray.
  • data: [in] void* function data. This argument is unused and should be a NULL pointer.
int8_t stdlib_ndarray_count_truthy_f_i( struct ndarray *arrays[], void *data );

stdlib_ndarray_count_truthy_f_l( *arrays[], *data )

Counts the number of truthy elements in an input ndarray.

#include "stdlib/ndarray/dtypes.h"
#include "stdlib/ndarray/index_modes.h"
#include "stdlib/ndarray/orders.h"
#include "stdlib/ndarray/ctor.h"
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>

// Define the ndarray data types:
enum STDLIB_NDARRAY_DTYPE xdtype = STDLIB_NDARRAY_FLOAT32;
enum STDLIB_NDARRAY_DTYPE ydtype = STDLIB_NDARRAY_INT64;

// Create underlying byte arrays:
uint8_t xbuf[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
uint8_t ybuf[] = { 0, 0, 0, 0, 0, 0, 0, 0 };

// Define the number of dimensions:
int64_t ndims = 2;

// Define the array shapes:
int64_t shx[] = { 2, 2 };
int64_t *shy = NULL;

// Define the strides:
int64_t sx[] = { 8, 4 };
int64_t sy[] = { 0 };

// Define the index offsets:
int64_t ox = 0;
int64_t oy = 0;

// Define the array order:
enum STDLIB_NDARRAY_ORDER order = STDLIB_NDARRAY_ROW_MAJOR;

// Specify the index mode:
enum STDLIB_NDARRAY_INDEX_MODE imode = STDLIB_NDARRAY_INDEX_ERROR;

// Specify the subscript index modes:
int8_t submodes[] = { imode };
int64_t nsubmodes = 1;

// Create an input ndarray:
struct ndarray *x = stdlib_ndarray_allocate( xdtype, xbuf, ndims, shx, sx, ox, order, imode, nsubmodes, submodes );
if ( x == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an output ndarray:
struct ndarray *y = stdlib_ndarray_allocate( ydtype, ybuf, 0, shy, sy, oy, order, imode, nsubmodes, submodes );
if ( y == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an array containing the ndarrays:
struct ndarray *arrays[] = { x, y };

// Perform operation:
int8_t status = stdlib_ndarray_count_truthy_f_l( arrays, NULL );
if ( status != 0 ) {
    fprintf( stderr, "Error during computation.\n" );
    exit( EXIT_FAILURE );
}

// ...

// Free allocated memory:
stdlib_ndarray_free( x );
stdlib_ndarray_free( y );

The function accepts the following arguments:

  • arrays: [inout] struct ndarray** array whose first element is a pointer to an input ndarray and whose second element is a pointer to a zero-dimensional output ndarray.
  • data: [in] void* function data. This argument is unused and should be a NULL pointer.
int8_t stdlib_ndarray_count_truthy_f_l( struct ndarray *arrays[], void *data );

stdlib_ndarray_count_truthy_i_i( *arrays[], *data )

Counts the number of truthy elements in an input ndarray.

#include "stdlib/ndarray/dtypes.h"
#include "stdlib/ndarray/index_modes.h"
#include "stdlib/ndarray/orders.h"
#include "stdlib/ndarray/ctor.h"
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>

// Define the ndarray data types:
enum STDLIB_NDARRAY_DTYPE xdtype = STDLIB_NDARRAY_INT32;
enum STDLIB_NDARRAY_DTYPE ydtype = STDLIB_NDARRAY_INT32;

// Create underlying byte arrays:
uint8_t xbuf[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
uint8_t ybuf[] = { 0, 0, 0, 0 };

// Define the number of dimensions:
int64_t ndims = 2;

// Define the array shapes:
int64_t shx[] = { 2, 2 };
int64_t *shy = NULL;

// Define the strides:
int64_t sx[] = { 8, 4 };
int64_t sy[] = { 0 };

// Define the index offsets:
int64_t ox = 0;
int64_t oy = 0;

// Define the array order:
enum STDLIB_NDARRAY_ORDER order = STDLIB_NDARRAY_ROW_MAJOR;

// Specify the index mode:
enum STDLIB_NDARRAY_INDEX_MODE imode = STDLIB_NDARRAY_INDEX_ERROR;

// Specify the subscript index modes:
int8_t submodes[] = { imode };
int64_t nsubmodes = 1;

// Create an input ndarray:
struct ndarray *x = stdlib_ndarray_allocate( xdtype, xbuf, ndims, shx, sx, ox, order, imode, nsubmodes, submodes );
if ( x == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an output ndarray:
struct ndarray *y = stdlib_ndarray_allocate( ydtype, ybuf, 0, shy, sy, oy, order, imode, nsubmodes, submodes );
if ( y == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an array containing the ndarrays:
struct ndarray *arrays[] = { x, y };

// Perform operation:
int8_t status = stdlib_ndarray_count_truthy_i_i( arrays, NULL );
if ( status != 0 ) {
    fprintf( stderr, "Error during computation.\n" );
    exit( EXIT_FAILURE );
}

// ...

// Free allocated memory:
stdlib_ndarray_free( x );
stdlib_ndarray_free( y );

The function accepts the following arguments:

  • arrays: [inout] struct ndarray** array whose first element is a pointer to an input ndarray and whose second element is a pointer to a zero-dimensional output ndarray.
  • data: [in] void* function data. This argument is unused and should be a NULL pointer.
int8_t stdlib_ndarray_count_truthy_i_i( struct ndarray *arrays[], void *data );

stdlib_ndarray_count_truthy_i_l( *arrays[], *data )

Counts the number of truthy elements in an input ndarray.

#include "stdlib/ndarray/dtypes.h"
#include "stdlib/ndarray/index_modes.h"
#include "stdlib/ndarray/orders.h"
#include "stdlib/ndarray/ctor.h"
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>

// Define the ndarray data types:
enum STDLIB_NDARRAY_DTYPE xdtype = STDLIB_NDARRAY_INT32;
enum STDLIB_NDARRAY_DTYPE ydtype = STDLIB_NDARRAY_INT64;

// Create underlying byte arrays:
uint8_t xbuf[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
uint8_t ybuf[] = { 0, 0, 0, 0, 0, 0, 0, 0 };

// Define the number of dimensions:
int64_t ndims = 2;

// Define the array shapes:
int64_t shx[] = { 2, 2 };
int64_t *shy = NULL;

// Define the strides:
int64_t sx[] = { 8, 4 };
int64_t sy[] = { 0 };

// Define the index offsets:
int64_t ox = 0;
int64_t oy = 0;

// Define the array order:
enum STDLIB_NDARRAY_ORDER order = STDLIB_NDARRAY_ROW_MAJOR;

// Specify the index mode:
enum STDLIB_NDARRAY_INDEX_MODE imode = STDLIB_NDARRAY_INDEX_ERROR;

// Specify the subscript index modes:
int8_t submodes[] = { imode };
int64_t nsubmodes = 1;

// Create an input ndarray:
struct ndarray *x = stdlib_ndarray_allocate( xdtype, xbuf, ndims, shx, sx, ox, order, imode, nsubmodes, submodes );
if ( x == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an output ndarray:
struct ndarray *y = stdlib_ndarray_allocate( ydtype, ybuf, 0, shy, sy, oy, order, imode, nsubmodes, submodes );
if ( y == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an array containing the ndarrays:
struct ndarray *arrays[] = { x, y };

// Perform operation:
int8_t status = stdlib_ndarray_count_truthy_i_l( arrays, NULL );
if ( status != 0 ) {
    fprintf( stderr, "Error during computation.\n" );
    exit( EXIT_FAILURE );
}

// ...

// Free allocated memory:
stdlib_ndarray_free( x );
stdlib_ndarray_free( y );

The function accepts the following arguments:

  • arrays: [inout] struct ndarray** array whose first element is a pointer to an input ndarray and whose second element is a pointer to a zero-dimensional output ndarray.
  • data: [in] void* function data. This argument is unused and should be a NULL pointer.
int8_t stdlib_ndarray_count_truthy_i_l( struct ndarray *arrays[], void *data );

stdlib_ndarray_count_truthy_k_i( *arrays[], *data )

Counts the number of truthy elements in an input ndarray.

#include "stdlib/ndarray/dtypes.h"
#include "stdlib/ndarray/index_modes.h"
#include "stdlib/ndarray/orders.h"
#include "stdlib/ndarray/ctor.h"
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>

// Define the ndarray data types:
enum STDLIB_NDARRAY_DTYPE xdtype = STDLIB_NDARRAY_INT16;
enum STDLIB_NDARRAY_DTYPE ydtype = STDLIB_NDARRAY_INT32;

// Create underlying byte arrays:
uint8_t xbuf[] = { 0, 0, 0, 0, 0, 0, 0, 0 };
uint8_t ybuf[] = { 0, 0, 0, 0 };

// Define the number of dimensions:
int64_t ndims = 2;

// Define the array shapes:
int64_t shx[] = { 2, 2 };
int64_t *shy = NULL;

// Define the strides:
int64_t sx[] = { 4, 2 };
int64_t sy[] = { 0 };

// Define the index offsets:
int64_t ox = 0;
int64_t oy = 0;

// Define the array order:
enum STDLIB_NDARRAY_ORDER order = STDLIB_NDARRAY_ROW_MAJOR;

// Specify the index mode:
enum STDLIB_NDARRAY_INDEX_MODE imode = STDLIB_NDARRAY_INDEX_ERROR;

// Specify the subscript index modes:
int8_t submodes[] = { imode };
int64_t nsubmodes = 1;

// Create an input ndarray:
struct ndarray *x = stdlib_ndarray_allocate( xdtype, xbuf, ndims, shx, sx, ox, order, imode, nsubmodes, submodes );
if ( x == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an output ndarray:
struct ndarray *y = stdlib_ndarray_allocate( ydtype, ybuf, 0, shy, sy, oy, order, imode, nsubmodes, submodes );
if ( y == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an array containing the ndarrays:
struct ndarray *arrays[] = { x, y };

// Perform operation:
int8_t status = stdlib_ndarray_count_truthy_k_i( arrays, NULL );
if ( status != 0 ) {
    fprintf( stderr, "Error during computation.\n" );
    exit( EXIT_FAILURE );
}

// ...

// Free allocated memory:
stdlib_ndarray_free( x );
stdlib_ndarray_free( y );

The function accepts the following arguments:

  • arrays: [inout] struct ndarray** array whose first element is a pointer to an input ndarray and whose second element is a pointer to a zero-dimensional output ndarray.
  • data: [in] void* function data. This argument is unused and should be a NULL pointer.
int8_t stdlib_ndarray_count_truthy_k_i( struct ndarray *arrays[], void *data );

stdlib_ndarray_count_truthy_k_l( *arrays[], *data )

Counts the number of truthy elements in an input ndarray.

#include "stdlib/ndarray/dtypes.h"
#include "stdlib/ndarray/index_modes.h"
#include "stdlib/ndarray/orders.h"
#include "stdlib/ndarray/ctor.h"
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>

// Define the ndarray data types:
enum STDLIB_NDARRAY_DTYPE xdtype = STDLIB_NDARRAY_INT16;
enum STDLIB_NDARRAY_DTYPE ydtype = STDLIB_NDARRAY_INT64;

// Create underlying byte arrays:
uint8_t xbuf[] = { 0, 0, 0, 0, 0, 0, 0, 0 };
uint8_t ybuf[] = { 0, 0, 0, 0, 0, 0, 0, 0 };

// Define the number of dimensions:
int64_t ndims = 2;

// Define the array shapes:
int64_t shx[] = { 2, 2 };
int64_t *shy = NULL;

// Define the strides:
int64_t sx[] = { 4, 2 };
int64_t sy[] = { 0 };

// Define the index offsets:
int64_t ox = 0;
int64_t oy = 0;

// Define the array order:
enum STDLIB_NDARRAY_ORDER order = STDLIB_NDARRAY_ROW_MAJOR;

// Specify the index mode:
enum STDLIB_NDARRAY_INDEX_MODE imode = STDLIB_NDARRAY_INDEX_ERROR;

// Specify the subscript index modes:
int8_t submodes[] = { imode };
int64_t nsubmodes = 1;

// Create an input ndarray:
struct ndarray *x = stdlib_ndarray_allocate( xdtype, xbuf, ndims, shx, sx, ox, order, imode, nsubmodes, submodes );
if ( x == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an output ndarray:
struct ndarray *y = stdlib_ndarray_allocate( ydtype, ybuf, 0, shy, sy, oy, order, imode, nsubmodes, submodes );
if ( y == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an array containing the ndarrays:
struct ndarray *arrays[] = { x, y };

// Perform operation:
int8_t status = stdlib_ndarray_count_truthy_k_l( arrays, NULL );
if ( status != 0 ) {
    fprintf( stderr, "Error during computation.\n" );
    exit( EXIT_FAILURE );
}

// ...

// Free allocated memory:
stdlib_ndarray_free( x );
stdlib_ndarray_free( y );

The function accepts the following arguments:

  • arrays: [inout] struct ndarray** array whose first element is a pointer to an input ndarray and whose second element is a pointer to a zero-dimensional output ndarray.
  • data: [in] void* function data. This argument is unused and should be a NULL pointer.
int8_t stdlib_ndarray_count_truthy_k_l( struct ndarray *arrays[], void *data );

stdlib_ndarray_count_truthy_s_i( *arrays[], *data )

Counts the number of truthy elements in an input ndarray.

#include "stdlib/ndarray/dtypes.h"
#include "stdlib/ndarray/index_modes.h"
#include "stdlib/ndarray/orders.h"
#include "stdlib/ndarray/ctor.h"
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>

// Define the ndarray data types:
enum STDLIB_NDARRAY_DTYPE xdtype = STDLIB_NDARRAY_INT8;
enum STDLIB_NDARRAY_DTYPE ydtype = STDLIB_NDARRAY_INT32;

// Create underlying byte arrays:
uint8_t xbuf[] = { 0, 0, 0, 0 };
uint8_t ybuf[] = { 0, 0, 0, 0 };

// Define the number of dimensions:
int64_t ndims = 2;

// Define the array shapes:
int64_t shx[] = { 2, 2 };
int64_t *shy = NULL;

// Define the strides:
int64_t sx[] = { 2, 1 };
int64_t sy[] = { 0 };

// Define the index offsets:
int64_t ox = 0;
int64_t oy = 0;

// Define the array order:
enum STDLIB_NDARRAY_ORDER order = STDLIB_NDARRAY_ROW_MAJOR;

// Specify the index mode:
enum STDLIB_NDARRAY_INDEX_MODE imode = STDLIB_NDARRAY_INDEX_ERROR;

// Specify the subscript index modes:
int8_t submodes[] = { imode };
int64_t nsubmodes = 1;

// Create an input ndarray:
struct ndarray *x = stdlib_ndarray_allocate( xdtype, xbuf, ndims, shx, sx, ox, order, imode, nsubmodes, submodes );
if ( x == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an output ndarray:
struct ndarray *y = stdlib_ndarray_allocate( ydtype, ybuf, 0, shy, sy, oy, order, imode, nsubmodes, submodes );
if ( y == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an array containing the ndarrays:
struct ndarray *arrays[] = { x, y };

// Perform operation:
int8_t status = stdlib_ndarray_count_truthy_s_i( arrays, NULL );
if ( status != 0 ) {
    fprintf( stderr, "Error during computation.\n" );
    exit( EXIT_FAILURE );
}

// ...

// Free allocated memory:
stdlib_ndarray_free( x );
stdlib_ndarray_free( y );

The function accepts the following arguments:

  • arrays: [inout] struct ndarray** array whose first element is a pointer to an input ndarray and whose second element is a pointer to a zero-dimensional output ndarray.
  • data: [in] void* function data. This argument is unused and should be a NULL pointer.
int8_t stdlib_ndarray_count_truthy_s_i( struct ndarray *arrays[], void *data );

stdlib_ndarray_count_truthy_s_l( *arrays[], *data )

Counts the number of truthy elements in an input ndarray.

#include "stdlib/ndarray/dtypes.h"
#include "stdlib/ndarray/index_modes.h"
#include "stdlib/ndarray/orders.h"
#include "stdlib/ndarray/ctor.h"
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>

// Define the ndarray data types:
enum STDLIB_NDARRAY_DTYPE xdtype = STDLIB_NDARRAY_INT8;
enum STDLIB_NDARRAY_DTYPE ydtype = STDLIB_NDARRAY_INT64;

// Create underlying byte arrays:
uint8_t xbuf[] = { 0, 0, 0, 0 };
uint8_t ybuf[] = { 0, 0, 0, 0, 0, 0, 0, 0 };

// Define the number of dimensions:
int64_t ndims = 2;

// Define the array shapes:
int64_t shx[] = { 2, 2 };
int64_t *shy = NULL;

// Define the strides:
int64_t sx[] = { 2, 1 };
int64_t sy[] = { 0 };

// Define the index offsets:
int64_t ox = 0;
int64_t oy = 0;

// Define the array order:
enum STDLIB_NDARRAY_ORDER order = STDLIB_NDARRAY_ROW_MAJOR;

// Specify the index mode:
enum STDLIB_NDARRAY_INDEX_MODE imode = STDLIB_NDARRAY_INDEX_ERROR;

// Specify the subscript index modes:
int8_t submodes[] = { imode };
int64_t nsubmodes = 1;

// Create an input ndarray:
struct ndarray *x = stdlib_ndarray_allocate( xdtype, xbuf, ndims, shx, sx, ox, order, imode, nsubmodes, submodes );
if ( x == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an output ndarray:
struct ndarray *y = stdlib_ndarray_allocate( ydtype, ybuf, 0, shy, sy, oy, order, imode, nsubmodes, submodes );
if ( y == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an array containing the ndarrays:
struct ndarray *arrays[] = { x, y };

// Perform operation:
int8_t status = stdlib_ndarray_count_truthy_s_l( arrays, NULL );
if ( status != 0 ) {
    fprintf( stderr, "Error during computation.\n" );
    exit( EXIT_FAILURE );
}

// ...

// Free allocated memory:
stdlib_ndarray_free( x );
stdlib_ndarray_free( y );

The function accepts the following arguments:

  • arrays: [inout] struct ndarray** array whose first element is a pointer to an input ndarray and whose second element is a pointer to a zero-dimensional output ndarray.
  • data: [in] void* function data. This argument is unused and should be a NULL pointer.
int8_t stdlib_ndarray_count_truthy_s_l( struct ndarray *arrays[], void *data );

stdlib_ndarray_count_truthy_t_i( *arrays[], *data )

Counts the number of truthy elements in an input ndarray.

#include "stdlib/ndarray/dtypes.h"
#include "stdlib/ndarray/index_modes.h"
#include "stdlib/ndarray/orders.h"
#include "stdlib/ndarray/ctor.h"
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>

// Define the ndarray data types:
enum STDLIB_NDARRAY_DTYPE xdtype = STDLIB_NDARRAY_UINT16;
enum STDLIB_NDARRAY_DTYPE ydtype = STDLIB_NDARRAY_INT32;

// Create underlying byte arrays:
uint8_t xbuf[] = { 0, 0, 0, 0, 0, 0, 0, 0 };
uint8_t ybuf[] = { 0, 0, 0, 0 };

// Define the number of dimensions:
int64_t ndims = 2;

// Define the array shapes:
int64_t shx[] = { 2, 2 };
int64_t *shy = NULL;

// Define the strides:
int64_t sx[] = { 4, 2 };
int64_t sy[] = { 0 };

// Define the index offsets:
int64_t ox = 0;
int64_t oy = 0;

// Define the array order:
enum STDLIB_NDARRAY_ORDER order = STDLIB_NDARRAY_ROW_MAJOR;

// Specify the index mode:
enum STDLIB_NDARRAY_INDEX_MODE imode = STDLIB_NDARRAY_INDEX_ERROR;

// Specify the subscript index modes:
int8_t submodes[] = { imode };
int64_t nsubmodes = 1;

// Create an input ndarray:
struct ndarray *x = stdlib_ndarray_allocate( xdtype, xbuf, ndims, shx, sx, ox, order, imode, nsubmodes, submodes );
if ( x == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an output ndarray:
struct ndarray *y = stdlib_ndarray_allocate( ydtype, ybuf, 0, shy, sy, oy, order, imode, nsubmodes, submodes );
if ( y == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an array containing the ndarrays:
struct ndarray *arrays[] = { x, y };

// Perform operation:
int8_t status = stdlib_ndarray_count_truthy_t_i( arrays, NULL );
if ( status != 0 ) {
    fprintf( stderr, "Error during computation.\n" );
    exit( EXIT_FAILURE );
}

// ...

// Free allocated memory:
stdlib_ndarray_free( x );
stdlib_ndarray_free( y );

The function accepts the following arguments:

  • arrays: [inout] struct ndarray** array whose first element is a pointer to an input ndarray and whose second element is a pointer to a zero-dimensional output ndarray.
  • data: [in] void* function data. This argument is unused and should be a NULL pointer.
int8_t stdlib_ndarray_count_truthy_t_i( struct ndarray *arrays[], void *data );

stdlib_ndarray_count_truthy_t_l( *arrays[], *data )

Counts the number of truthy elements in an input ndarray.

#include "stdlib/ndarray/dtypes.h"
#include "stdlib/ndarray/index_modes.h"
#include "stdlib/ndarray/orders.h"
#include "stdlib/ndarray/ctor.h"
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>

// Define the ndarray data types:
enum STDLIB_NDARRAY_DTYPE xdtype = STDLIB_NDARRAY_UINT16;
enum STDLIB_NDARRAY_DTYPE ydtype = STDLIB_NDARRAY_INT64;

// Create underlying byte arrays:
uint8_t xbuf[] = { 0, 0, 0, 0, 0, 0, 0, 0 };
uint8_t ybuf[] = { 0, 0, 0, 0, 0, 0, 0, 0 };

// Define the number of dimensions:
int64_t ndims = 2;

// Define the array shapes:
int64_t shx[] = { 2, 2 };
int64_t *shy = NULL;

// Define the strides:
int64_t sx[] = { 4, 2 };
int64_t sy[] = { 0 };

// Define the index offsets:
int64_t ox = 0;
int64_t oy = 0;

// Define the array order:
enum STDLIB_NDARRAY_ORDER order = STDLIB_NDARRAY_ROW_MAJOR;

// Specify the index mode:
enum STDLIB_NDARRAY_INDEX_MODE imode = STDLIB_NDARRAY_INDEX_ERROR;

// Specify the subscript index modes:
int8_t submodes[] = { imode };
int64_t nsubmodes = 1;

// Create an input ndarray:
struct ndarray *x = stdlib_ndarray_allocate( xdtype, xbuf, ndims, shx, sx, ox, order, imode, nsubmodes, submodes );
if ( x == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an output ndarray:
struct ndarray *y = stdlib_ndarray_allocate( ydtype, ybuf, 0, shy, sy, oy, order, imode, nsubmodes, submodes );
if ( y == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an array containing the ndarrays:
struct ndarray *arrays[] = { x, y };

// Perform operation:
int8_t status = stdlib_ndarray_count_truthy_t_l( arrays, NULL );
if ( status != 0 ) {
    fprintf( stderr, "Error during computation.\n" );
    exit( EXIT_FAILURE );
}

// ...

// Free allocated memory:
stdlib_ndarray_free( x );
stdlib_ndarray_free( y );

The function accepts the following arguments:

  • arrays: [inout] struct ndarray** array whose first element is a pointer to an input ndarray and whose second element is a pointer to a zero-dimensional output ndarray.
  • data: [in] void* function data. This argument is unused and should be a NULL pointer.
int8_t stdlib_ndarray_count_truthy_t_l( struct ndarray *arrays[], void *data );

stdlib_ndarray_count_truthy_u_i( *arrays[], *data )

Counts the number of truthy elements in an input ndarray.

#include "stdlib/ndarray/dtypes.h"
#include "stdlib/ndarray/index_modes.h"
#include "stdlib/ndarray/orders.h"
#include "stdlib/ndarray/ctor.h"
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>

// Define the ndarray data types:
enum STDLIB_NDARRAY_DTYPE xdtype = STDLIB_NDARRAY_UINT32;
enum STDLIB_NDARRAY_DTYPE ydtype = STDLIB_NDARRAY_INT32;

// Create underlying byte arrays:
uint8_t xbuf[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
uint8_t ybuf[] = { 0, 0, 0, 0 };

// Define the number of dimensions:
int64_t ndims = 2;

// Define the array shapes:
int64_t shx[] = { 2, 2 };
int64_t *shy = NULL;

// Define the strides:
int64_t sx[] = { 8, 4 };
int64_t sy[] = { 0 };

// Define the index offsets:
int64_t ox = 0;
int64_t oy = 0;

// Define the array order:
enum STDLIB_NDARRAY_ORDER order = STDLIB_NDARRAY_ROW_MAJOR;

// Specify the index mode:
enum STDLIB_NDARRAY_INDEX_MODE imode = STDLIB_NDARRAY_INDEX_ERROR;

// Specify the subscript index modes:
int8_t submodes[] = { imode };
int64_t nsubmodes = 1;

// Create an input ndarray:
struct ndarray *x = stdlib_ndarray_allocate( xdtype, xbuf, ndims, shx, sx, ox, order, imode, nsubmodes, submodes );
if ( x == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an output ndarray:
struct ndarray *y = stdlib_ndarray_allocate( ydtype, ybuf, 0, shy, sy, oy, order, imode, nsubmodes, submodes );
if ( y == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an array containing the ndarrays:
struct ndarray *arrays[] = { x, y };

// Perform operation:
int8_t status = stdlib_ndarray_count_truthy_u_i( arrays, NULL );
if ( status != 0 ) {
    fprintf( stderr, "Error during computation.\n" );
    exit( EXIT_FAILURE );
}

// ...

// Free allocated memory:
stdlib_ndarray_free( x );
stdlib_ndarray_free( y );

The function accepts the following arguments:

  • arrays: [inout] struct ndarray** array whose first element is a pointer to an input ndarray and whose second element is a pointer to a zero-dimensional output ndarray.
  • data: [in] void* function data. This argument is unused and should be a NULL pointer.
int8_t stdlib_ndarray_count_truthy_u_i( struct ndarray *arrays[], void *data );

stdlib_ndarray_count_truthy_u_l( *arrays[], *data )

Counts the number of truthy elements in an input ndarray.

#include "stdlib/ndarray/dtypes.h"
#include "stdlib/ndarray/index_modes.h"
#include "stdlib/ndarray/orders.h"
#include "stdlib/ndarray/ctor.h"
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>

// Define the ndarray data types:
enum STDLIB_NDARRAY_DTYPE xdtype = STDLIB_NDARRAY_UINT32;
enum STDLIB_NDARRAY_DTYPE ydtype = STDLIB_NDARRAY_INT64;

// Create underlying byte arrays:
uint8_t xbuf[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
uint8_t ybuf[] = { 0, 0, 0, 0, 0, 0, 0, 0 };

// Define the number of dimensions:
int64_t ndims = 2;

// Define the array shapes:
int64_t shx[] = { 2, 2 };
int64_t *shy = NULL;

// Define the strides:
int64_t sx[] = { 8, 4 };
int64_t sy[] = { 0 };

// Define the index offsets:
int64_t ox = 0;
int64_t oy = 0;

// Define the array order:
enum STDLIB_NDARRAY_ORDER order = STDLIB_NDARRAY_ROW_MAJOR;

// Specify the index mode:
enum STDLIB_NDARRAY_INDEX_MODE imode = STDLIB_NDARRAY_INDEX_ERROR;

// Specify the subscript index modes:
int8_t submodes[] = { imode };
int64_t nsubmodes = 1;

// Create an input ndarray:
struct ndarray *x = stdlib_ndarray_allocate( xdtype, xbuf, ndims, shx, sx, ox, order, imode, nsubmodes, submodes );
if ( x == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an output ndarray:
struct ndarray *y = stdlib_ndarray_allocate( ydtype, ybuf, 0, shy, sy, oy, order, imode, nsubmodes, submodes );
if ( y == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an array containing the ndarrays:
struct ndarray *arrays[] = { x, y };

// Perform operation:
int8_t status = stdlib_ndarray_count_truthy_u_l( arrays, NULL );
if ( status != 0 ) {
    fprintf( stderr, "Error during computation.\n" );
    exit( EXIT_FAILURE );
}

// ...

// Free allocated memory:
stdlib_ndarray_free( x );
stdlib_ndarray_free( y );

The function accepts the following arguments:

  • arrays: [inout] struct ndarray** array whose first element is a pointer to an input ndarray and whose second element is a pointer to a zero-dimensional output ndarray.
  • data: [in] void* function data. This argument is unused and should be a NULL pointer.
int8_t stdlib_ndarray_count_truthy_u_l( struct ndarray *arrays[], void *data );

stdlib_ndarray_count_truthy_x_i( *arrays[], *data )

Counts the number of truthy elements in an input ndarray.

#include "stdlib/ndarray/dtypes.h"
#include "stdlib/ndarray/index_modes.h"
#include "stdlib/ndarray/orders.h"
#include "stdlib/ndarray/ctor.h"
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>

// Define the ndarray data types:
enum STDLIB_NDARRAY_DTYPE xdtype = STDLIB_NDARRAY_BOOL;
enum STDLIB_NDARRAY_DTYPE ydtype = STDLIB_NDARRAY_INT32;

// Create underlying byte arrays:
uint8_t xbuf[] = { 0, 0, 0, 0 };
uint8_t ybuf[] = { 0, 0, 0, 0 };

// Define the number of dimensions:
int64_t ndims = 2;

// Define the array shapes:
int64_t shx[] = { 2, 2 };
int64_t *shy = NULL;

// Define the strides:
int64_t sx[] = { 2, 1 };
int64_t sy[] = { 0 };

// Define the index offsets:
int64_t ox = 0;
int64_t oy = 0;

// Define the array order:
enum STDLIB_NDARRAY_ORDER order = STDLIB_NDARRAY_ROW_MAJOR;

// Specify the index mode:
enum STDLIB_NDARRAY_INDEX_MODE imode = STDLIB_NDARRAY_INDEX_ERROR;

// Specify the subscript index modes:
int8_t submodes[] = { imode };
int64_t nsubmodes = 1;

// Create an input ndarray:
struct ndarray *x = stdlib_ndarray_allocate( xdtype, xbuf, ndims, shx, sx, ox, order, imode, nsubmodes, submodes );
if ( x == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an output ndarray:
struct ndarray *y = stdlib_ndarray_allocate( ydtype, ybuf, 0, shy, sy, oy, order, imode, nsubmodes, submodes );
if ( y == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an array containing the ndarrays:
struct ndarray *arrays[] = { x, y };

// Perform operation:
int8_t status = stdlib_ndarray_count_truthy_x_i( arrays, NULL );
if ( status != 0 ) {
    fprintf( stderr, "Error during computation.\n" );
    exit( EXIT_FAILURE );
}

// ...

// Free allocated memory:
stdlib_ndarray_free( x );
stdlib_ndarray_free( y );

The function accepts the following arguments:

  • arrays: [inout] struct ndarray** array whose first element is a pointer to an input ndarray and whose second element is a pointer to a zero-dimensional output ndarray.
  • data: [in] void* function data. This argument is unused and should be a NULL pointer.
int8_t stdlib_ndarray_count_truthy_x_i( struct ndarray *arrays[], void *data );

stdlib_ndarray_count_truthy_x_l( *arrays[], *data )

Counts the number of truthy elements in an input ndarray.

#include "stdlib/ndarray/dtypes.h"
#include "stdlib/ndarray/index_modes.h"
#include "stdlib/ndarray/orders.h"
#include "stdlib/ndarray/ctor.h"
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>

// Define the ndarray data types:
enum STDLIB_NDARRAY_DTYPE xdtype = STDLIB_NDARRAY_BOOL;
enum STDLIB_NDARRAY_DTYPE ydtype = STDLIB_NDARRAY_INT64;

// Create underlying byte arrays:
uint8_t xbuf[] = { 0, 0, 0, 0 };
uint8_t ybuf[] = { 0, 0, 0, 0, 0, 0, 0, 0 };

// Define the number of dimensions:
int64_t ndims = 2;

// Define the array shapes:
int64_t shx[] = { 2, 2 };
int64_t *shy = NULL;

// Define the strides:
int64_t sx[] = { 2, 1 };
int64_t sy[] = { 0 };

// Define the index offsets:
int64_t ox = 0;
int64_t oy = 0;

// Define the array order:
enum STDLIB_NDARRAY_ORDER order = STDLIB_NDARRAY_ROW_MAJOR;

// Specify the index mode:
enum STDLIB_NDARRAY_INDEX_MODE imode = STDLIB_NDARRAY_INDEX_ERROR;

// Specify the subscript index modes:
int8_t submodes[] = { imode };
int64_t nsubmodes = 1;

// Create an input ndarray:
struct ndarray *x = stdlib_ndarray_allocate( xdtype, xbuf, ndims, shx, sx, ox, order, imode, nsubmodes, submodes );
if ( x == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an output ndarray:
struct ndarray *y = stdlib_ndarray_allocate( ydtype, ybuf, 0, shy, sy, oy, order, imode, nsubmodes, submodes );
if ( y == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an array containing the ndarrays:
struct ndarray *arrays[] = { x, y };

// Perform operation:
int8_t status = stdlib_ndarray_count_truthy_x_l( arrays, NULL );
if ( status != 0 ) {
    fprintf( stderr, "Error during computation.\n" );
    exit( EXIT_FAILURE );
}

// ...

// Free allocated memory:
stdlib_ndarray_free( x );
stdlib_ndarray_free( y );

The function accepts the following arguments:

  • arrays: [inout] struct ndarray** array whose first element is a pointer to an input ndarray and whose second element is a pointer to a zero-dimensional output ndarray.
  • data: [in] void* function data. This argument is unused and should be a NULL pointer.
int8_t stdlib_ndarray_count_truthy_x_l( struct ndarray *arrays[], void *data );

stdlib_ndarray_count_truthy_z_i( *arrays[], *data )

Counts the number of truthy elements in an input ndarray.

#include "stdlib/ndarray/dtypes.h"
#include "stdlib/ndarray/index_modes.h"
#include "stdlib/ndarray/orders.h"
#include "stdlib/ndarray/ctor.h"
#include "stdlib/complex/float64/ctor.h"
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>

// Define the ndarray data types:
enum STDLIB_NDARRAY_DTYPE xdtype = STDLIB_NDARRAY_COMPLEX128;
enum STDLIB_NDARRAY_DTYPE ydtype = STDLIB_NDARRAY_INT32;

// Create underlying byte arrays:
uint8_t xbuf[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
uint8_t ybuf[] = { 0, 0, 0, 0 };

// Define the number of dimensions:
int64_t ndims = 2;

// Define the array shapes:
int64_t shx[] = { 2, 2 };
int64_t *shy = NULL;

// Define the strides:
int64_t sx[] = { 32, 16 };
int64_t sy[] = { 0 };

// Define the index offsets:
int64_t ox = 0;
int64_t oy = 0;

// Define the array order:
enum STDLIB_NDARRAY_ORDER order = STDLIB_NDARRAY_ROW_MAJOR;

// Specify the index mode:
enum STDLIB_NDARRAY_INDEX_MODE imode = STDLIB_NDARRAY_INDEX_ERROR;

// Specify the subscript index modes:
int8_t submodes[] = { imode };
int64_t nsubmodes = 1;

// Create an input ndarray:
struct ndarray *x = stdlib_ndarray_allocate( xdtype, xbuf, ndims, shx, sx, ox, order, imode, nsubmodes, submodes );
if ( x == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an output ndarray:
struct ndarray *y = stdlib_ndarray_allocate( ydtype, ybuf, 0, shy, sy, oy, order, imode, nsubmodes, submodes );
if ( y == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an array containing the ndarrays:
struct ndarray *arrays[] = { x, y };

// Perform operation:
int8_t status = stdlib_ndarray_count_truthy_z_i( arrays, NULL );
if ( status != 0 ) {
    fprintf( stderr, "Error during computation.\n" );
    exit( EXIT_FAILURE );
}

// ...

// Free allocated memory:
stdlib_ndarray_free( x );
stdlib_ndarray_free( y );

The function accepts the following arguments:

  • arrays: [inout] struct ndarray** array whose first element is a pointer to an input ndarray and whose second element is a pointer to a zero-dimensional output ndarray.
  • data: [in] void* function data. This argument is unused and should be a NULL pointer.
int8_t stdlib_ndarray_count_truthy_z_i( struct ndarray *arrays[], void *data );

stdlib_ndarray_count_truthy_z_l( *arrays[], *data )

Counts the number of truthy elements in an input ndarray.

#include "stdlib/ndarray/dtypes.h"
#include "stdlib/ndarray/index_modes.h"
#include "stdlib/ndarray/orders.h"
#include "stdlib/ndarray/ctor.h"
#include "stdlib/complex/float64/ctor.h"
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>

// Define the ndarray data types:
enum STDLIB_NDARRAY_DTYPE xdtype = STDLIB_NDARRAY_COMPLEX128;
enum STDLIB_NDARRAY_DTYPE ydtype = STDLIB_NDARRAY_INT64;

// Create underlying byte arrays:
uint8_t xbuf[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
uint8_t ybuf[] = { 0, 0, 0, 0, 0, 0, 0, 0 };

// Define the number of dimensions:
int64_t ndims = 2;

// Define the array shapes:
int64_t shx[] = { 2, 2 };
int64_t *shy = NULL;

// Define the strides:
int64_t sx[] = { 32, 16 };
int64_t sy[] = { 0 };

// Define the index offsets:
int64_t ox = 0;
int64_t oy = 0;

// Define the array order:
enum STDLIB_NDARRAY_ORDER order = STDLIB_NDARRAY_ROW_MAJOR;

// Specify the index mode:
enum STDLIB_NDARRAY_INDEX_MODE imode = STDLIB_NDARRAY_INDEX_ERROR;

// Specify the subscript index modes:
int8_t submodes[] = { imode };
int64_t nsubmodes = 1;

// Create an input ndarray:
struct ndarray *x = stdlib_ndarray_allocate( xdtype, xbuf, ndims, shx, sx, ox, order, imode, nsubmodes, submodes );
if ( x == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an output ndarray:
struct ndarray *y = stdlib_ndarray_allocate( ydtype, ybuf, 0, shy, sy, oy, order, imode, nsubmodes, submodes );
if ( y == NULL ) {
    fprintf( stderr, "Error allocating memory.\n" );
    exit( EXIT_FAILURE );
}

// Create an array containing the ndarrays:
struct ndarray *arrays[] = { x, y };

// Perform operation:
int8_t status = stdlib_ndarray_count_truthy_z_l( arrays, NULL );
if ( status != 0 ) {
    fprintf( stderr, "Error during computation.\n" );
    exit( EXIT_FAILURE );
}

// ...

// Free allocated memory:
stdlib_ndarray_free( x );
stdlib_ndarray_free( y );

The function accepts the following arguments:

  • arrays: [inout] struct ndarray** array whose first element is a pointer to an input ndarray and whose second element is a pointer to a zero-dimensional output ndarray.
  • data: [in] void* function data. This argument is unused and should be a NULL pointer.
int8_t stdlib_ndarray_count_truthy_z_l( struct ndarray *arrays[], void *data );

Examples

#include "stdlib/ndarray/base/count_truthy.h"
#include "stdlib/ndarray/dtypes.h"
#include "stdlib/ndarray/index_modes.h"
#include "stdlib/ndarray/orders.h"
#include "stdlib/ndarray/ctor.h"
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>
#include <inttypes.h>

static void print_ndarray_contents( const struct ndarray *x ) {
    int64_t i;
    int32_t v;
    int8_t s;

    for ( i = 0; i < stdlib_ndarray_length( x ); i++ ) {
        s = stdlib_ndarray_iget_int32( x, i, &v );
        if ( s != 0 ) {
            fprintf( stderr, "Unable to resolve data element.\n" );
            exit( EXIT_FAILURE );
        }
        fprintf( stdout, "data[%"PRId64"] = %d\n", i, v );
    }
}

int main( void ) {
    // Define the ndarray data types:
    enum STDLIB_NDARRAY_DTYPE xdtype = STDLIB_NDARRAY_UINT8;
    enum STDLIB_NDARRAY_DTYPE ydtype = STDLIB_NDARRAY_INT32;

    // Create underlying byte arrays:
    uint8_t xbuf[] = { 1, 2, 3, 4, 5, 6, 7, 8 };
    uint8_t ybuf[] = { 0, 0, 0, 0 };

    // Define the number of input array dimensions:
    int64_t ndims = 3;

    // Define the array shapes:
    int64_t shx[] = { 2, 2, 2 };
    int64_t *shy = NULL;

    // Define the strides:
    int64_t sx[] = { 4, 2, 1 };
    int64_t sy[] = { 0 };

    // Define the offsets:
    int64_t ox = 0;
    int64_t oy = 0;

    // Define the array order:
    enum STDLIB_NDARRAY_ORDER order = STDLIB_NDARRAY_ROW_MAJOR;

    // Specify the index mode:
    enum STDLIB_NDARRAY_INDEX_MODE imode = STDLIB_NDARRAY_INDEX_ERROR;

    // Specify the subscript index modes:
    int8_t submodes[] = { imode };
    int64_t nsubmodes = 1;

    // Create an input ndarray:
    struct ndarray *x = stdlib_ndarray_allocate( xdtype, xbuf, ndims, shx, sx, ox, order, imode, nsubmodes, submodes );
    if ( x == NULL ) {
        fprintf( stderr, "Error allocating memory.\n" );
        exit( EXIT_FAILURE );
    }

    // Create an output ndarray:
    struct ndarray *y = stdlib_ndarray_allocate( ydtype, ybuf, 0, shy, sy, oy, order, imode, nsubmodes, submodes );
    if ( y == NULL ) {
        fprintf( stderr, "Error allocating memory.\n" );
        exit( EXIT_FAILURE );
    }

    // Define an array containing the ndarrays:
    struct ndarray *arrays[] = { x, y };

    // Perform operation:
    int8_t status = stdlib_ndarray_count_truthy_b_i( arrays, NULL );
    if ( status != 0 ) {
        fprintf( stderr, "Error during computation.\n" );
        exit( EXIT_FAILURE );
    }

    // Print the results:
    print_ndarray_contents( y );
    fprintf( stdout, "\n" );

    // Free allocated memory:
    stdlib_ndarray_free( x );
    stdlib_ndarray_free( y );
}