@stdlib/strided-base-unary

Apply a unary callback to elements in a strided input array and assign results to elements in a strided output array.

Usage no npm install needed!

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README

Unary

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Apply a unary callback to elements in a strided input array and assign results to elements in a strided output array.

Installation

npm install @stdlib/strided-base-unary

Usage

var unary = require( '@stdlib/strided-base-unary' );

unary( arrays, shape, strides, fcn )

Applies a unary callback to elements in a strided input array and assigns results to elements in a strided output array.

var Float64Array = require( '@stdlib/array-float64' );
var abs = require( '@stdlib/math-base-special-abs' );

var x = new Float64Array( [ -2.0, 1.0, 3.0, -5.0, 4.0, 0.0, -1.0, -3.0 ] );

// Compute the absolute values in-place:
unary( [ x, x ], [ x.length ], [ 1, 1 ], abs );
// x => <Float64Array>[ 2.0, 1.0, 3.0, 5.0, 4.0, 0.0, 1.0, 3.0 ]

The function accepts the following arguments:

  • arrays: array-like object containing one strided input array and one strided output array.
  • shape: array-like object containing a single element, the number of indexed elements.
  • strides: array-like object containing the stride lengths for the strided input and output arrays.
  • fcn: unary function to apply.

The shape and strides parameters determine which elements in the strided input and output arrays are accessed at runtime. For example, to index every other value in the strided input array and to index the first N elements of the strided output array in reverse order,

var Float64Array = require( '@stdlib/array-float64' );
var abs = require( '@stdlib/math-base-special-abs' );

var x = new Float64Array( [ -1.0, -2.0, -3.0, -4.0, -5.0, -6.0 ] );
var y = new Float64Array( [ 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 ] );

var N = 3;

unary( [ x, y ], [ N ], [ 2, -1 ], abs );
// y => <Float64Array>[ 5.0, 3.0, 1.0, 0.0, 0.0, 0.0 ]

Note that indexing is relative to the first index. To introduce an offset, use [typed array][mdn-typed-array] views.

var Float64Array = require( '@stdlib/array-float64' );
var abs = require( '@stdlib/math-base-special-abs' );

// Initial arrays...
var x0 = new Float64Array( [ -1.0, -2.0, -3.0, -4.0, -5.0, -6.0 ] );
var y0 = new Float64Array( [ 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 ] );

// Create offset views...
var x1 = new Float64Array( x0.buffer, x0.BYTES_PER_ELEMENT*1 ); // start at 2nd element
var y1 = new Float64Array( y0.buffer, y0.BYTES_PER_ELEMENT*3 ); // start at 4th element

var N = 3;

unary( [ x1, y1 ], [ N ], [ -2, 1 ], abs );
// y0 => <Float64Array>[ 0.0, 0.0, 0.0, 6.0, 4.0, 2.0 ]

unary.ndarray( arrays, shape, strides, offsets, fcn )

Applies a unary callback to elements in a strided input array and assigns results to elements in a strided output array using alternative indexing semantics.

var Float64Array = require( '@stdlib/array-float64' );
var abs = require( '@stdlib/math-base-special-abs' );

var x = new Float64Array( [ -1.0, -2.0, -3.0, -4.0, -5.0 ] );
var y = new Float64Array( [ 0.0, 0.0, 0.0, 0.0, 0.0 ] );

unary.ndarray( [ x, y ], [ x.length ], [ 1, 1 ], [ 0, 0 ], abs );
// y => <Float64Array>[ 1.0, 2.0, 3.0, 4.0, 5.0 ]

The function accepts the following additional arguments:

  • offsets: array-like object containing the starting indices (i.e., index offsets) for the strided input and output arrays.

While [typed array][mdn-typed-array] views mandate a view offset based on the underlying buffer, the offsets parameter supports indexing semantics based on starting indices. For example, to index every other value in the strided input array starting from the second value and to index the last N elements in the strided output array,

var Float64Array = require( '@stdlib/array-float64' );
var abs = require( '@stdlib/math-base-special-abs' );

var x = new Float64Array( [ -1.0, -2.0, -3.0, -4.0, -5.0, -6.0 ] );
var y = new Float64Array( [ 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 ] );

var N = 3;

unary.ndarray( [ x, y ], [ N ], [ 2, -1 ], [ 1, y.length-1 ], abs );
// y => <Float64Array>[ 0.0, 0.0, 0.0, 6.0, 4.0, 2.0 ]

Examples

var discreteUniform = require( '@stdlib/random-base-discrete-uniform' ).factory;
var filledarray = require( '@stdlib/array-filled' );
var filledarrayBy = require( '@stdlib/array-filled-by' );
var unary = require( '@stdlib/strided-base-unary' );

function add10( x ) {
    return x + 10;
}

var N = 10;

var x = filledarrayBy( N, 'generic', discreteUniform( -100, 100 ) );
console.log( x );

var y = filledarray( 0.0, N, 'generic' );
console.log( y );

var shape = [ N ];
var strides = [ 1, -1 ];
var offsets = [ 0, N-1 ];

unary.ndarray( [ x, y ], shape, strides, offsets, add10 );
console.log( y );

C APIs

Character codes for data types:

  • d: float64 (double-precision floating-point number).
  • f: float32 (single-precision floating-point number).
  • c: complex64 (single-precision floating-point complex number).
  • z: complex128 (double-precision floating-point complex number).
  • s: int8 (signed 8-bit integer).
  • b: uint8 (unsigned 8-bit integer).
  • k: int16 (signed 16-bit integer).
  • t: uint16 (unsigned 16-bit integer).
  • i: int32 (signed 32-bit integer).
  • u: uint32 (unsigned 32-bit integer).
  • l: int64 (signed 64-bit integer).
  • v: uint64 (unsigned 64-bit integer).
  • x: bool (boolean).

Function name suffix naming convention:

stdlib_strided_<input_data_type>_<output_data_type>[_as_<callback_arg_data_type>_<callback_return_data_type>]

For example,

void stdlib_strided_d_d(...) {...}

is a function which accepts one double-precision floating-point strided input array and one double-precision floating-point strided output array. In other words, the suffix encodes the function type signature.

To support callbacks whose input arguments and/or return values are of a different data type than the strided input and/or output array data types, the naming convention supports appending an as suffix. For example,

void stdlib_strided_f_f_as_d_d(...) {...}

is a function which accepts one single-precision floating-point strided input array and one single-precision floating-point strided output array. However, the callback accepts and returns double-precision floating-point numbers. Accordingly, the input and output values need to be cast using the following conversion sequence

// Convert each input array element to double-precision:
double in1 = (double)x[ i ];

// Evaluate the callback:
double out = f( in1 );

// Convert the callback return value to single-precision:
y[ i ] = (float)out;

When the strided input array and the callback (i.e., the input argument and return value) share the same data type, the as suffix can be omitted. For example,

void stdlib_strided_f_d(...) {...}

is a function which accepts one single-precision floating-point strided input array and one double-precision floating-point strided output array. The callback is assumed to accept and return single-precision floating-point numbers. Accordingly, the input and output values are cast according to the following conversion sequence

// Retrieve each input array element as single-precision:
float in1 = (float)x[ i ];

// Evaluate the callback:
float out = f( in1 );

// Convert the callback return value to double-precision:
y[ i ] = (double)out;

Usage

#include "stdlib/strided/base/unary.h"

stdlib_strided_b_b( *arrays[], *shape, *strides, *fcn )

Applies a unary callback accepting and returning unsigned 8-bit integers to an unsigned 8-bit integer strided input array and assigns results to elements in an unsigned 8-bit integer strided output array.

#include <stdint.h>

// Create underlying byte arrays:
uint8_t x[] = { 0, 0, 0 };
uint8_t out[] = { 0, 0, 0 };

// Define a pointer to an array containing pointers to strided arrays:
uint8_t *arrays[] = { x, out };

// Define the strides:
int64_t strides[] = { 1, 1 }; // 1 byte per uint8

// Define the number of elements over which to iterate:
int64_t shape[] = { 3 };

// Define a callback:
uint8_t scale( const uint8_t x ) {
    return x + 10;
}

// Apply the callback:
stdlib_strided_b_b( arrays, shape, strides, (void *)scale );

The function accepts the following arguments:

  • arrays: [inout] uint8_t** array whose first element is a pointer to a strided input array and whose last element is a pointer to a strided output array.
  • shape: [in] int64_t* array whose only element is the number of elements over which to iterate.
  • strides: [in] int64_t* array containing strides (in bytes) for each strided array.
  • fcn: [in] void* a uint8_t (*f)(uint8_t) function to apply provided as a void pointer.
void stdlib_strided_b_b( uint8_t *arrays[], int64_t *shape, int64_t *strides, void *fcn );

stdlib_strided_b_b_as_u_u( *arrays[], *shape, *strides, *fcn )

Applies a unary callback accepting and returning unsigned 32-bit integers to an unsigned 8-bit integer strided input array, casts the callback's unsigned 32-bit integer return value to an unsigned 8-bit integer, and assigns results to elements in an unsigned 8-bit integer strided output array.

#include <stdint.h>

// Create underlying byte arrays:
uint8_t x[] = { 0, 0, 0 };
uint8_t out[] = { 0, 0, 0 };

// Define a pointer to an array containing pointers to strided arrays:
uint8_t *arrays[] = { x, out };

// Define the strides:
int64_t strides[] = { 1, 1 }; // 1 byte per uint8

// Define the number of elements over which to iterate:
int64_t shape[] = { 3 };

// Define a callback:
uint32_t scale( const uint32_t x ) {
    return x + 10;
}

// Apply the callback:
stdlib_strided_b_b_as_u_u( arrays, shape, strides, (void *)scale );

The function accepts the following arguments:

  • arrays: [inout] uint8_t** array whose first element is a pointer to a strided input array and whose last element is a pointer to a strided output array.
  • shape: [in] int64_t* array whose only element is the number of elements over which to iterate.
  • strides: [in] int64_t* array containing strides (in bytes) for each strided array.
  • fcn: [in] void* a uint32_t (*f)(uint32_t) function to apply provided as a void pointer.
void stdlib_strided_b_b_as_u_u( uint8_t *arrays[], int64_t *shape, int64_t *strides, void *fcn );

stdlib_strided_b_d( *arrays[], *shape, *strides, *fcn )

Applies a unary callback accepting and returning unsigned 8-bit integers to an unsigned 8-bit integer strided input array, casts the callback's unsigned 8-bit integer return value to a double-precision floating-point number, and assigns results to elements in a double-precision floating-point strided output array.

#include <stdint.h>

// Create underlying byte arrays:
uint8_t x[] = { 0, 0, 0 };
uint8_t out[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };

// Define a pointer to an array containing pointers to strided arrays:
uint8_t *arrays[] = { x, out };

// Define the strides:
int64_t strides[] = { 1, 8 }; // 1 byte per uint8, 8 bytes per double

// Define the number of elements over which to iterate:
int64_t shape[] = { 3 };

// Define a callback:
uint8_t scale( const uint8_t x ) {
    return x + 10;
}

// Apply the callback:
stdlib_strided_b_d( arrays, shape, strides, (void *)scale );

The function accepts the following arguments:

  • arrays: [inout] uint8_t** array whose first element is a pointer to a strided input array and whose last element is a pointer to a strided output array.
  • shape: [in] int64_t* array whose only element is the number of elements over which to iterate.
  • strides: [in] int64_t* array containing strides (in bytes) for each strided array.
  • fcn: [in] void* a uint8_t (*f)(uint8_t) function to apply provided as a void pointer.
void stdlib_strided_b_d( uint8_t *arrays[], int64_t *shape, int64_t *strides, void *fcn );

stdlib_strided_b_d_as_d_d( *arrays[], *shape, *strides, *fcn )

Applies a unary callback accepting and returning double-precision floating-point numbers to an unsigned 8-bit integer strided input array and assigns results to elements in a double-precision floating-point strided output array.

#include <stdint.h>

// Create underlying byte arrays:
uint8_t x[] = { 0, 0, 0 };
uint8_t out[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };

// Define a pointer to an array containing pointers to strided arrays:
uint8_t *arrays[] = { x, out };

// Define the strides:
int64_t strides[] = { 1, 8 }; // 1 byte per uint8, 8 bytes per double

// Define the number of elements over which to iterate:
int64_t shape[] = { 3 };

// Define a callback:
double scale( const double x ) {
    return x + 10.0;
}

// Apply the callback:
stdlib_strided_b_d_as_d_d( arrays, shape, strides, (void *)scale );

The function accepts the following arguments:

  • arrays: [inout] uint8_t** array whose first element is a pointer to a strided input array and whose last element is a pointer to a strided output array.
  • shape: [in] int64_t* array whose only element is the number of elements over which to iterate.
  • strides: [in] int64_t* array containing strides (in bytes) for each strided array.
  • fcn: [in] void* a double (*f)(double) function to apply provided as a void pointer.
void stdlib_strided_b_d_as_d_d( uint8_t *arrays[], int64_t *shape, int64_t *strides, void *fcn );

stdlib_strided_b_f( *arrays[], *shape, *strides, *fcn )

Applies a unary callback accepting and returning unsigned 8-bit integers to an unsigned 8-bit integer strided input array, casts the callback's unsigned 8-bit integer return value to a single-precision floating-point number, and assigns results to elements in a single-precision floating-point strided output array.

#include <stdint.h>

// Create underlying byte arrays:
uint8_t x[] = { 0, 0, 0 };
uint8_t out[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };

// Define a pointer to an array containing pointers to strided arrays:
uint8_t *arrays[] = { x, out };

// Define the strides:
int64_t strides[] = { 1, 4 }; // 1 byte per uint8, 4 bytes per float

// Define the number of elements over which to iterate:
int64_t shape[] = { 3 };

// Define a callback:
uint8_t scale( const uint8_t x ) {
    return x + 10;
}

// Apply the callback:
stdlib_strided_b_f( arrays, shape, strides, (void *)scale );

The function accepts the following arguments:

  • arrays: [inout] uint8_t** array whose first element is a pointer to a strided input array and whose last element is a pointer to a strided output array.
  • shape: [in] int64_t* array whose only element is the number of elements over which to iterate.
  • strides: [in] int64_t* array containing strides (in bytes) for each strided array.
  • fcn: [in] void* a uint8_t (*f)(uint8_t) function to apply provided as a void pointer.
void stdlib_strided_b_f( uint8_t *arrays[], int64_t *shape, int64_t *strides, void *fcn );

stdlib_strided_b_f_as_d_d( *arrays[], *shape, *strides, *fcn )

Applies a unary callback accepting and returning double-precision floating-point numbers to an unsigned 8-bit integer strided input array, casts the callback's double-precision floating-point return value to a single-precision floating-point number, and assigns results to elements in a single-precision floating-point strided output array.

#include <stdint.h>

// Create underlying byte arrays:
uint8_t x[] = { 0, 0, 0 };
uint8_t out[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };

// Define a pointer to an array containing pointers to strided arrays:
uint8_t *arrays[] = { x, out };

// Define the strides:
int64_t strides[] = { 1, 4 }; // 1 byte per uint8, 4 bytes per float

// Define the number of elements over which to iterate:
int64_t shape[] = { 3 };

// Define a callback:
double scale( const double x ) {
    return x + 10.0;
}

// Apply the callback:
stdlib_strided_b_f_as_d_d( arrays, shape, strides, (void *)scale );

The function accepts the following arguments:

  • arrays: [inout] uint8_t** array whose first element is a pointer to a strided input array and whose last element is a pointer to a strided output array.
  • shape: [in] int64_t* array whose only element is the number of elements over which to iterate.
  • strides: [in] int64_t* array containing strides (in bytes) for each strided array.
  • fcn: [in] void* a double (*f)(double) function to apply provided as a void pointer.
void stdlib_strided_b_f_as_d_d( uint8_t *arrays[], int64_t *shape, int64_t *strides, void *fcn );

stdlib_strided_b_f_as_f_f( *arrays[], *shape, *strides, *fcn )

Applies a unary callback accepting and returning single-precision floating-point numbers to an unsigned 8-bit integer strided input array, casts the callback's single-precision floating-point return value to a single-precision floating-point number, and assigns results to elements in a single-precision floating-point strided output array.

#include <stdint.h>

// Create underlying byte arrays:
uint8_t x[] = { 0, 0, 0 };
uint8_t out[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };

// Define a pointer to an array containing pointers to strided arrays:
uint8_t *arrays[] = { x, out };

// Define the strides:
int64_t strides[] = { 1, 4 }; // 1 byte per uint8, 4 bytes per float

// Define the number of elements over which to iterate:
int64_t shape[] = { 3 };

// Define a callback:
float scale( const float x ) {
    return x + 10.0f;
}

// Apply the callback:
stdlib_strided_b_f_as_f_f( arrays, shape, strides, (void *)scale );

The function accepts the following arguments:

  • arrays: [inout] uint8_t** array whose first element is a pointer to a strided input array and whose last element is a pointer to a strided output array.
  • shape: [in] int64_t* array whose only element is the number of elements over which to iterate.
  • strides: [in] int64_t* array containing strides (in bytes) for each strided array.
  • fcn: [in] void* a float (*f)(float) function to apply provided as a void pointer.
void stdlib_strided_b_f_as_f_f( uint8_t *arrays[], int64_t *shape, int64_t *strides, void *fcn );

stdlib_strided_b_i( *arrays[], *shape, *strides, *fcn )

Applies a unary callback accepting and returning signed 32-bit integers to an unsigned 8-bit integer strided input array, casts the callback's unsigned 8-bit integer return value to a signed 32-bit integer, and assigns results to elements in a signed 32-bit integer strided output array.

#include <stdint.h>

// Create underlying byte arrays:
uint8_t x[] = { 0, 0, 0 };
uint8_t out[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };

// Define a pointer to an array containing pointers to strided arrays:
uint8_t *arrays[] = { x, out };

// Define the strides:
int64_t strides[] = { 1, 4 }; // 1 byte per uint8, 4 bytes per int32

// Define the number of elements over which to iterate:
int64_t shape[] = { 3 };

// Define a callback:
uint8_t scale( const uint8_t x ) {
    return x + 10;
}

// Apply the callback:
stdlib_strided_b_i( arrays, shape, strides, (void *)scale );

The function accepts the following arguments:

  • arrays: [inout] uint8_t** array whose first element is a pointer to a strided input array and whose last element is a pointer to a strided output array.
  • shape: [in] int64_t* array whose only element is the number of elements over which to iterate.
  • strides: [in] int64_t* array containing strides (in bytes) for each strided array.
  • fcn: [in] void* a uint8_t (*f)(uint8_t) function to apply provided as a void pointer.
void stdlib_strided_b_i( uint8_t *arrays[], int64_t *shape, int64_t *strides, void *fcn );

stdlib_strided_b_i_as_i_i( *arrays[], *shape, *strides, *fcn )

Applies a unary callback accepting and returning signed 32-bit integers to an unsigned 8-bit integer strided input array and assigns results to elements in a signed 32-bit integer strided output array.

#include <stdint.h>

// Create underlying byte arrays:
uint8_t x[] = { 0, 0, 0 };
uint8_t out[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };

// Define a pointer to an array containing pointers to strided arrays:
uint8_t *arrays[] = { x, out };

// Define the strides:
int64_t strides[] = { 1, 4 }; // 1 byte per uint8, 4 bytes per int32

// Define the number of elements over which to iterate:
int64_t shape[] = { 3 };

// Define a callback:
int32_t scale( const int32_t x ) {
    return x + 10;
}

// Apply the callback:
stdlib_strided_b_i_as_i_i( arrays, shape, strides, (void *)scale );

The function accepts the following arguments:

  • arrays: [inout] uint8_t** array whose first element is a pointer to a strided input array and whose last element is a pointer to a strided output array.
  • shape: [in] int64_t* array whose only element is the number of elements over which to iterate.
  • strides: [in] int64_t* array containing strides (in bytes) for each strided array.
  • fcn: [in] void* a int32_t (*f)(int32_t) function to apply provided as a void pointer.
void stdlib_strided_b_i_as_i_i( uint8_t *arrays[], int64_t *shape, int64_t *strides, void *fcn );

stdlib_strided_b_k( *arrays[], *shape, *strides, *fcn )

Applies a unary callback accepting and returning unsigned 8-bit integers to an unsigned 8-bit integer strided input array, casts the callback's unsigned 8-bit integer return value to a signed 16-bit integer, and assigns results to elements in a signed 16-bit integer strided output array.

#include <stdint.h>

// Create underlying byte arrays:
uint8_t x[] = { 0, 0, 0 };
uint8_t out[] = { 0, 0, 0, 0, 0, 0 };

// Define a pointer to an array containing pointers to strided arrays:
uint8_t *arrays[] = { x, out };

// Define the strides:
int64_t strides[] = { 1, 2 }; // 1 byte per uint8, 2 bytes per int16

// Define the number of elements over which to iterate:
int64_t shape[] = { 3 };

// Define a callback:
uint8_t scale( const uint8_t x ) {
    return x + 10;
}

// Apply the callback:
stdlib_strided_b_k( arrays, shape, strides, (void *)scale );

The function accepts the following arguments:

  • arrays: [inout] uint8_t** array whose first element is a pointer to a strided input array and whose last element is a pointer to a strided output array.
  • shape: [in] int64_t* array whose only element is the number of elements over which to iterate.
  • strides: [in] int64_t* array containing strides (in bytes) for each strided array.
  • fcn: [in] void* a uint8_t (*f)(uint8_t) function to apply provided as a void pointer.
void stdlib_strided_b_k( uint8_t *arrays[], int64_t *shape, int64_t *strides, void *fcn );

stdlib_strided_b_k_as_i_i( *arrays[], *shape, *strides, *fcn )

Applies a unary callback accepting and returning signed 32-bit integers to an unsigned 8-bit integer strided input array, casts the callback's signed 32-bit integer return value to a signed 16-bit integer, and assigns results to elements in a signed 16-bit integer strided output array.

#include <stdint.h>

// Create underlying byte arrays:
uint8_t x[] = { 0, 0, 0 };
uint8_t out[] = { 0, 0, 0, 0, 0, 0 };

// Define a pointer to an array containing pointers to strided arrays:
uint8_t *arrays[] = { x, out };

// Define the strides:
int64_t strides[] = { 1, 2 }; // 1 byte per uint8, 2 bytes per int16

// Define the number of elements over which to iterate:
int64_t shape[] = { 3 };

// Define a callback:
int32_t scale( const int32_t x ) {
    return x + 10;
}

// Apply the callback:
stdlib_strided_b_k_as_i_i( arrays, shape, strides, (void *)scale );

The function accepts the following arguments:

  • arrays: [inout] uint8_t** array whose first element is a pointer to a strided input array and whose last element is a pointer to a strided output array.
  • shape: [in] int64_t* array whose only element is the number of elements over which to iterate.
  • strides: [in] int64_t* array containing strides (in bytes) for each strided array.
  • fcn: [in] void* a int32_t (*f)(int32_t) function to apply provided as a void pointer.
void stdlib_strided_b_k_as_i_i( uint8_t *arrays[], int64_t *shape, int64_t *strides, void *fcn );

stdlib_strided_b_k_as_k_k( *arrays[], *shape, *strides, *fcn )

Applies a unary callback accepting and returning signed 16-bit integers to an unsigned 8-bit integer strided input array and assigns results to elements in a signed 16-bit integer strided output array.

#include <stdint.h>

// Create underlying byte arrays:
uint8_t x[] = { 0, 0, 0 };
uint8_t out[] = { 0, 0, 0, 0, 0, 0 };

// Define a pointer to an array containing pointers to strided arrays:
uint8_t *arrays[] = { x, out };

// Define the strides:
int64_t strides[] = { 1, 2 }; // 1 byte per uint8, 2 bytes per int16

// Define the number of elements over which to iterate:
int64_t shape[] = { 3 };

// Define a callback:
int16_t scale( const int16_t x ) {
    return x + 10;
}

// Apply the callback:
stdlib_strided_b_k_as_k_k( arrays, shape, strides, (void *)scale );

The function accepts the following arguments:

  • arrays: [inout] uint8_t** array whose first element is a pointer to a strided input array and whose last element is a pointer to a strided output array.
  • shape: [in] int64_t* array whose only element is the number of elements over which to iterate.
  • strides: [in] int64_t* array containing strides (in bytes) for each strided array.
  • fcn: [in] void* a int16_t (*f)(int16_t) function to apply provided as a void pointer.
void stdlib_strided_b_k_as_k_k( uint8_t *arrays[], int64_t *shape, int64_t *strides, void *fcn );

stdlib_strided_b_t( *arrays[], *shape, *strides, *fcn )

Applies a unary callback accepting and returning unsigned 8-bit integers to an unsigned 8-bit integer strided input array, casts the callback's unsigned 8-bit integer return value to an unsigned 16-bit integer, and assigns results to elements in an unsigned 16-bit integer strided output array.

#include <stdint.h>

// Create underlying byte arrays:
uint8_t x[] = { 0, 0, 0 };
uint8_t out[] = { 0, 0, 0, 0, 0, 0 };

// Define a pointer to an array containing pointers to strided arrays:
uint8_t *arrays[] = { x, out };

// Define the strides:
int64_t strides[] = { 1, 2 }; // 1 byte per uint8, 2 bytes per uint16

// Define the number of elements over which to iterate:
int64_t shape[] = { 3 };

// Define a callback:
uint8_t scale( const uint8_t x ) {
    return x + 10;
}

// Apply the callback:
stdlib_strided_b_t( arrays, shape, strides, (void *)scale );

The function accepts the following arguments:

  • arrays: [inout] uint8_t** array whose first element is a pointer to a strided input array and whose last element is a pointer to a strided output array.
  • shape: [in] int64_t* array whose only element is the number of elements over which to iterate.
  • strides: [in] int64_t* array containing strides (in bytes) for each strided array.
  • fcn: [in] void* a uint8_t (*f)(uint8_t) function to apply provided as a void pointer.
void stdlib_strided_b_t( uint8_t *arrays[], int64_t *shape, int64_t *strides, void *fcn );

stdlib_strided_b_t_as_t_t( *arrays[], *shape, *strides, *fcn )

Applies a unary callback accepting and returning unsigned 16-bit integers to an unsigned 8-bit integer strided input array and assigns results to elements in an unsigned 16-bit integer strided output array.

#include <stdint.h>

// Create underlying byte arrays:
uint8_t x[] = { 0, 0, 0 };
uint8_t out[] = { 0, 0, 0, 0, 0, 0 };

// Define a pointer to an array containing pointers to strided arrays:
uint8_t *arrays[] = { x, out };

// Define the strides:
int64_t strides[] = { 1, 2 }; // 1 byte per uint8, 2 bytes per uint16

// Define the number of elements over which to iterate:
int64_t shape[] = { 3 };

// Define a callback:
uint16_t scale( const uint16_t x ) {
    return x + 10;
}

// Apply the callback:
stdlib_strided_b_t_as_t_t( arrays, shape, strides, (void *)scale );

The function accepts the following arguments:

  • arrays: [inout] uint8_t** array whose first element is a pointer to a strided input array and whose last element is a pointer to a strided output array.
  • shape: [in] int64_t* array whose only element is the number of elements over which to iterate.
  • strides: [in] int64_t* array containing strides (in bytes) for each strided array.
  • fcn: [in] void* a uint16_t (*f)(uint16_t) function to apply provided as a void pointer.
void stdlib_strided_b_t_as_t_t( uint8_t *arrays[], int64_t *shape, int64_t *strides, void *fcn );

stdlib_strided_b_t_as_u_u( *arrays[], *shape, *strides, *fcn )

Applies a unary callback accepting and returning unsigned 32-bit integers to an unsigned 8-bit integer strided input array, casts the callback's unsigned 32-bit integer return value to an unsigned 16-bit integer, and assigns results to elements in an unsigned 16-bit integer strided output array.

#include <stdint.h>

// Create underlying byte arrays:
uint8_t x[] = { 0, 0, 0 };
uint8_t out[] = { 0, 0, 0, 0, 0, 0 };

// Define a pointer to an array containing pointers to strided arrays:
uint8_t *arrays[] = { x, out };

// Define the strides:
int64_t strides[] = { 1, 2 }; // 1 byte per uint8, 2 bytes per uint16

// Define the number of elements over which to iterate:
int64_t shape[] = { 3 };

// Define a callback:
uint32_t scale( const uint32_t x ) {
    return x + 10;
}

// Apply the callback:
stdlib_strided_b_t_as_u_u( arrays, shape, strides, (void *)scale );

The function accepts the following arguments:

  • arrays: [inout] uint8_t** array whose first element is a pointer to a strided input array and whose last element is a pointer to a strided output array.
  • shape: [in] int64_t* array whose only element is the number of elements over which to iterate.
  • strides: [in] int64_t* array containing strides (in bytes) for each strided array.
  • fcn: [in] void* a uint32_t (*f)(uint32_t) function to apply provided as a void pointer.
void stdlib_strided_b_t_as_u_u( uint8_t *arrays[], int64_t *shape, int64_t *strides, void *fcn );

stdlib_strided_b_u( *arrays[], *shape, *strides, *fcn )

Applies a unary callback accepting and returning unsigned 8-bit integers to an unsigned 8-bit integer strided input array, casts the callback's unsigned 8-bit integer return value to an unsigned 32-bit integer, and assigns results to elements in an unsigned 32-bit integer strided output array.

#include <stdint.h>

// Create underlying byte arrays:
uint8_t x[] = { 0, 0, 0 };
uint8_t out[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };

// Define a pointer to an array containing pointers to strided arrays:
uint8_t *arrays[] = { x, out };

// Define the strides:
int64_t strides[] = { 1, 4 }; // 1 byte per uint8, 4 bytes per uint32

// Define the number of elements over which to iterate:
int64_t shape[] = { 3 };

// Define a callback:
uint8_t scale( const uint8_t x ) {
    return x + 10;
}

// Apply the callback:
stdlib_strided_b_u( arrays, shape, strides, (void *)scale );

The function accepts the following arguments:

  • arrays: [inout] uint8_t** array whose first element is a pointer to a strided input array and whose last element is a pointer to a strided output array.
  • shape: [in] int64_t* array whose only element is the number of elements over which to iterate.
  • strides: [in] int64_t* array containing strides (in bytes) for each strided array.
  • fcn: [in] void* a uint8_t (*f)(uint8_t) function to apply provided as a void pointer.
void stdlib_strided_b_u( uint8_t *arrays[], int64_t *shape, int64_t *strides, void *fcn );

stdlib_strided_b_u_as_u_u( *arrays[], *shape, *strides, *fcn )

Applies a unary callback accepting and returning unsigned 32-bit integers to an unsigned 8-bit integer strided input array and assigns results to elements in an unsigned 32-bit integer strided output array.

#include <stdint.h>

// Create underlying byte arrays:
uint8_t x[] = { 0, 0, 0 };
uint8_t out[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };

// Define a pointer to an array containing pointers to strided arrays:
uint8_t *arrays[] = { x, out };

// Define the strides:
int64_t strides[] = { 1, 4 }; // 1 byte per uint8, 4 bytes per uint32

// Define the number of elements over which to iterate:
int64_t shape[] = { 3 };

// Define a callback:
uint32_t scale( const uint32_t x ) {
    return x + 10;
}

// Apply the callback:
stdlib_strided_b_u_as_u_u( arrays, shape, strides, (void *)scale );

The function accepts the following arguments:

  • arrays: [inout] uint8_t** array whose first element is a pointer to a strided input array and whose last element is a pointer to a strided output array.
  • shape: [in] int64_t* array whose only element is the number of elements over which to iterate.
  • strides: [in] int64_t* array containing strides (in bytes) for each strided array.
  • fcn: [in] void* a uint32_t (*f)(uint32_t) function to apply provided as a void pointer.
void stdlib_strided_b_u_as_u_u( uint8_t *arrays[], int64_t *shape, int64_t *strides, void *fcn );

stdlib_strided_d_d( *arrays[], *shape, *strides, *fcn )

Applies a unary callback accepting and returning double-precision floating-point numbers to a double-precision floating-point strided input array and assigns results to elements in a double-precision floating-point strided output array.

#include <stdint.h>

// Create underlying byte arrays:
uint8_t x[] = { 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 out[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };

// Define a pointer to an array containing pointers to strided arrays:
uint8_t *arrays[] = { x, out };

// Define the strides:
int64_t strides[] = { 8, 8 }; // 8 bytes per double

// Define the number of elements over which to iterate:
int64_t shape[] = { 3 };

// Define a callback:
double scale( const double x ) {
    return x + 10.0;
}

// Apply the callback:
stdlib_strided_d_d( arrays, shape, strides, (void *)scale );

The function accepts the following arguments:

  • arrays: [inout] uint8_t** array whose first element is a pointer to a strided input array and whose last element is a pointer to a strided output array.
  • shape: [in] int64_t* array whose only element is the number of elements over which to iterate.
  • strides: [in] int64_t* array containing strides (in bytes) for each strided array.
  • fcn: [in] void* a double (*f)(double) function to apply provided as a void pointer.
void stdlib_strided_d_d( uint8_t *arrays[], int64_t *shape, int64_t *strides, void *fcn );

stdlib_strided_d_i( *arrays[], *shape, *strides, *fcn )

Applies a unary callback accepting a double-precision floating-point number and returning a signed 32-bit integer to a double-precision floating-point strided input array and assigns results to elements in a signed 32-bit integer strided output array.

#include <stdint.h>
#include <math.h>

// Create underlying byte arrays:
uint8_t x[] = { 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 out[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };

// Define a pointer to an array containing pointers to strided arrays:
uint8_t *arrays[] = { x, out };

// Define the strides:
int64_t strides[] = { 8, 4 }; // 8 bytes per double, 4 bytes per int32

// Define the number of elements over which to iterate:
int64_t shape[] = { 3 };

// Apply the callback:
stdlib_strided_d_i( arrays, shape, strides, (void *)lrint );

The function accepts the following arguments:

  • arrays: [inout] uint8_t** array whose first element is a pointer to a strided input array and whose last element is a pointer to a strided output array.
  • shape: [in] int64_t* array whose only element is the number of elements over which to iterate.
  • strides: [in] int64_t* array containing strides (in bytes) for each strided array.
  • fcn: [in] void* a int32_t (*f)(double) function to apply provided as a void pointer.
void stdlib_strided_d_i( uint8_t *arrays[], int64_t *shape, int64_t *strides, void *fcn );

stdlib_strided_d_l( *arrays[], *shape, *strides, *fcn )

Applies a unary callback accepting a double-precision floating-point number and returning a signed 64-bit integer to a double-precision floating-point strided input array and assigns results to elements in a signed 64-bit integer strided output array.

#include <stdint.h>
#include <math.h>

// Create underlying byte arrays:
uint8_t x[] = { 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 out[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };

// Define a pointer to an array containing pointers to strided arrays:
uint8_t *arrays[] = { x, out };

// Define the strides:
int64_t strides[] = { 8, 8 }; // 8 bytes per double, 8 bytes per int64

// Define the number of elements over which to iterate:
int64_t shape[] = { 3 };

// Apply the callback:
stdlib_strided_d_l( arrays, shape, strides, (void *)llrint );

The function accepts the following arguments:

  • arrays: [inout] uint8_t** array whose first element is a pointer to a strided input array and whose last element is a pointer to a strided output array.
  • shape: [in] int64_t* array whose only element is the number of elements over which to iterate.
  • strides: [in] int64_t* array containing strides (in bytes) for each strided array.
  • fcn: [in] void* a int64_t (*f)(double) function to apply provided as a void pointer.
void stdlib_strided_d_l( uint8_t *arrays[], int64_t *shape, int64_t *strides, void *fcn );

stdlib_strided_f_d( *arrays[], *shape, *strides, *fcn )

Applies a unary callback accepting and returning single-precision floating-point numbers to a single-precision floating-point strided input array, casts the callback's single-precision floating-point return value to a double-precision floating-point number, and assigns results to elements in a double-precision floating-point strided output array.

#include <stdint.h>

// Create underlying byte arrays:
uint8_t x[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
uint8_t out[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };

// Define a pointer to an array containing pointers to strided arrays:
uint8_t *arrays[] = { x, out };

// Define the strides:
int64_t strides[] = { 4, 8 }; // 4 bytes per float, 8 bytes per double

// Define the number of elements over which to iterate:
int64_t shape[] = { 3 };

// Define a callback:
float scale( const float x ) {
    return x + 10.0f;
}

// Apply the callback:
stdlib_strided_f_d( arrays, shape, strides, (void *)scale );

The function accepts the following arguments:

  • arrays: [inout] uint8_t** array whose first element is a pointer to a strided input array and whose last element is a pointer to a strided output array.
  • shape: [in] int64_t* array whose only element is the number of elements over which to iterate.
  • strides: [in] int64_t* array containing strides (in bytes) for each strided array.
  • fcn: [in] void* a float (*f)(float) function to apply provided as a void pointer.
void stdlib_strided_f_d( uint8_t *arrays[], int64_t *shape, int64_t *strides, void *fcn );

stdlib_strided_f_d_as_d_d( *arrays[], *shape, *strides, *fcn )

Applies a unary callback accepting and returning double-precision floating-point numbers to a single-precision floating-point strided input array and assigns results to elements in a double-precision floating-point strided output array.

#include <stdint.h>

// Create underlying byte arrays:
uint8_t x[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
uint8_t out[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };

// Define a pointer to an array containing pointers to strided arrays:
uint8_t *arrays[] = { x, out };

// Define the strides:
int64_t strides[] = { 4, 8 }; // 4 bytes per float, 8 bytes per double

// Define the number of elements over which to iterate:
int64_t shape[] = { 3 };

// Define a callback:
double scale( const double x ) {
    return x + 10.0;
}

// Apply the callback:
stdlib_strided_f_d_as_d_d( arrays, shape, strides, (void *)scale );

The function accepts the following arguments:

  • arrays: [inout] uint8_t** array whose first element is a pointer to a strided input array and whose last element is a pointer to a strided output array.
  • shape: [in] int64_t* array whose only element is the number of elements over which to iterate.
  • strides: [in] int64_t* array containing strides (in bytes) for each strided array.
  • fcn: [in] void* a double (*f)(double) function to apply provided as a void pointer.
void stdlib_strided_f_d_as_d_d( uint8_t *arrays[], int64_t *shape, int64_t *strides, void *fcn );

stdlib_strided_f_f( *arrays[], *shape, *strides, *fcn )

Applies a unary callback accepting and returning single-precision floating-point numbers to a single-precision floating-point strided input array and assigns results to elements in a single-precision floating-point strided output array.

#include <stdint.h>

// Create underlying byte arrays:
uint8_t x[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
uint8_t out[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };

// Define a pointer to an array containing pointers to strided arrays:
uint8_t *arrays[] = { x, out };

// Define the strides:
int64_t strides[] = { 4, 4 }; // 4 bytes per float

// Define the number of elements over which to iterate:
int64_t shape[] = { 3 };

// Define a callback:
float scale( const float x ) {
    return x + 10.0f;
}

// Apply the callback:
stdlib_strided_f_f( arrays, shape, strides, (void *)scale );

The function accepts the following arguments:

  • arrays: [inout] uint8_t** array whose first element is a pointer to a strided input array and whose last element is a pointer to a strided output array.
  • shape: [in] int64_t* array whose only element is the number of elements over which to iterate.
  • strides: [in] int64_t* array containing strides (in bytes) for each strided array.
  • fcn: [in] void* a float (*f)(float) function to apply provided as a void pointer.
void stdlib_strided_f_f( uint8_t *arrays[], int64_t *shape, int64_t *strides, void *fcn );

stdlib_strided_f_f_as_d_d( *arrays[], *shape, *strides, *fcn )

Applies a unary callback accepting and returning double-precision floating-point numbers, casts the callback's double-precision floating-point return value to a single-precision floating-point number, and assigns results to elements in a single-precision floating-point strided output array.

#include <stdint.h>

// Create underlying byte arrays:
uint8_t x[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
uint8_t out[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };

// Define a pointer to an array containing pointers to strided arrays:
uint8_t *arrays[] = { x, out };

// Define the strides:
int64_t strides[] = { 4, 4 }; // 4 bytes per float

// Define the number of elements over which to iterate:
int64_t shape[] = { 3 };

// Define a callback:
double scale( const double x ) {
    return x + 10.0;
}

// Apply the callback:
stdlib_strided_f_f_as_d_d( arrays, shape, strides, (void *)scale );

The function accepts the following arguments:

  • arrays: [inout] uint8_t** array whose first element is a pointer to a strided input array and whose last element is a pointer to a strided output array.
  • shape: [in] int64_t* array whose only element is the number of elements over which to iterate.
  • strides: [in] int64_t* array containing strides (in bytes) for each strided array.
  • fcn: [in] void* a double (*f)(double) function to apply provided as a void pointer.
void stdlib_strided_f_f_as_d_d( uint8_t *arrays[], int64_t *shape, int64_t *strides, void *fcn );

stdlib_strided_f_i( *arrays[], *shape, *strides, *fcn )

Applies a unary callback accepting a single-precision floating-point number and returning a signed 32-bit integer to a single-precision floating-point strided input array and assigns results to elements in a signed 32-bit integer strided output array.

#include <stdint.h>
#include <math.h>

// Create underlying byte arrays:
uint8_t x[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
uint8_t out[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };

// Define a pointer to an array containing pointers to strided arrays:
uint8_t *arrays[] = { x, out };

// Define the strides:
int64_t strides[] = { 4, 4 }; // 4 bytes per float, 4 bytes per int32

// Define the number of elements over which to iterate:
int64_t shape[] = { 3 };

// Apply the callback:
stdlib_strided_f_i( arrays, shape, strides, (void *)lrintf );

The function accepts the following arguments:

  • arrays: [inout] uint8_t** array whose first element is a pointer to a strided input array and whose last element is a pointer to a strided output array.
  • shape: [in] int64_t* array whose only element is the number of elements over which to iterate.
  • strides: [in] int64_t* array containing strides (in bytes) for each strided array.
  • fcn: [in] void* a int32_t (*f)(float) function to apply provided as a void pointer.
void stdlib_strided_f_i( uint8_t *arrays[], int64_t *shape, int64_t *strides, void *fcn );

stdlib_strided_f_l( *arrays[], *shape, *strides, *fcn )

Applies a unary callback accepting a single-precision floating-point number and returning a signed 64-bit integer to a single-precision floating-point strided input array and assigns results to elements in a signed 64-bit integer strided output array.

#include <stdint.h>
#include <math.h>

// Create underlying byte arrays:
uint8_t x[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
uint8_t out[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };

// Define a pointer to an array containing pointers to strided arrays:
uint8_t *arrays[] = { x, out };

// Define the strides:
int64_t strides[] = { 4, 8 }; // 4 bytes per float, 8 bytes per int64

// Define the number of elements over which to iterate:
int64_t shape[] = { 3 };

// Apply the callback:
stdlib_strided_f_l( arrays, shape, strides, (void *)lrintf );

The function accepts the following arguments:

  • arrays: [inout] uint8_t** array whose first element is a pointer to a strided input array and whose last element is a pointer to a strided output array.
  • shape: [in] int64_t* array whose only element is the number of elements over which to iterate.
  • strides: [in] int64_t* array containing strides (in bytes) for each strided array.
  • fcn: [in] void* a int64_t (*f)(float) function to apply provided as a void pointer.
void stdlib_strided_f_l( uint8_t *arrays[], int64_t *shape, int64_t *strides, void *fcn );

stdlib_strided_i_d( *arrays[], *shape, *strides, *fcn )

Applies a unary callback accepting and returning signed 32-bit integers to a signed 32-bit integer strided input array, casts the callback's signed 32-bit integer return value to a double-precision floating-point number, and assigns results to elements in a double-precision floating-point strided output array.

#include <stdint.h>

// Create underlying byte arrays:
uint8_t x[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
uint8_t out[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };

// Define a pointer to an array containing pointers to strided arrays:
uint8_t *arrays[] = { x, out };

// Define the strides:
int64_t strides[] = { 4, 8 }; // 4 bytes per int32, 8 bytes per double

// Define the number of elements over which to iterate:
int64_t shape[] = { 3 };

// Define a callback:
int32_t scale( const int32_t x ) {
    return x + 10;
}

// Apply the callback:
stdlib_strided_i_d( arrays, shape, strides, (void *)scale );

The function accepts the following arguments:

  • arrays: [inout] uint8_t** array whose first element is a pointer to a strided input array and whose last element is a pointer to a strided output array.
  • shape: [in] int64_t* array whose only element is the number of elements over which to iterate.
  • strides: [in] int64_t* array containing strides (in bytes) for each strided array.
  • fcn: [in] void* a int32_t (*f)(int32_t) function to apply provided as a void pointer.
void stdlib_strided_i_d( uint8_t *arrays[], int64_t *shape, int64_t *strides, void *fcn );

stdlib_strided_i_d_as_d_d( *arrays[], *shape, *strides, *fcn )

Applies a unary callback accepting and returning double-precision floating-point numbers to a signed 32-bit integer strided input array and assigns results to elements in a double-precision floating-point strided output array.

#include <stdint.h>

// Create underlying byte arrays:
uint8_t x[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
uint8_t out[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };

// Define a pointer to an array containing pointers to strided arrays:
uint8_t *arrays[] = { x, out };

// Define the strides:
int64_t strides[] = { 4, 8 }; // 4 bytes per int32, 8 bytes per double

// Define the number of elements over which to iterate:
int64_t shape[] = { 3 };

// Define a callback:
double scale( const double x ) {
    return x + 10.0;
}

// Apply the callback:
stdlib_strided_i_d_as_d_d( arrays, shape, strides, (void *)scale );

The function accepts the following arguments:

  • arrays: [inout] uint8_t** array whose first element is a pointer to a strided input array and whose last element is a pointer to a strided output array.
  • shape: [in] int64_t* array whose only element is the number of elements over which to iterate.
  • strides: [in] int64_t* array containing strides (in bytes) for each strided array.
  • fcn: [in] void* a double (*f)(double) function to apply provided as a void pointer.
void stdlib_strided_i_d_as_d_d( uint8_t *arrays[], int64_t *shape, int64_t *strides, void *fcn );

stdlib_strided_i_i( *arrays[], *shape, *strides, *fcn )

Applies a unary callback accepting and returning signed 32-bit integers to a signed 32-bit integer strided input array and assigns results to elements in a signed 32-bit integer strided output array.

#include <stdint.h>

// Create underlying byte arrays:
uint8_t x[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
uint8_t out[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };

// Define a pointer to an array containing pointers to strided arrays:
uint8_t *arrays[] = { x, out };

// Define the strides:
int64_t strides[] = { 4, 4 }; // 4 bytes per int32

// Define the number of elements over which to iterate:
int64_t shape[] = { 3 };

// Define a callback:
int32_t scale( const int32_t x ) {
    return x + 10;
}

// Apply the callback:
stdlib_strided_i_i( arrays, shape, strides, (void *)scale );

The function accepts the following arguments:

  • arrays: [inout] uint8_t** array whose first element is a pointer to a strided input array and whose last element is a pointer to a strided output array.
  • shape: [in] int64_t* array whose only element is the number of elements over which to iterate.
  • strides: [in] int64_t* array containing strides (in bytes) for each strided array.
  • fcn: [in] void* a int32_t (*f)(int32_t) function to apply provided as a void pointer.
void stdlib_strided_i_i( uint8_t *arrays[], int64_t *shape, int64_t *strides, void *fcn );

stdlib_strided_i_u( *arrays[], *shape, *strides, *fcn )

Applies a unary callback accepting and returning signed 32-bit integers to a signed 32-bit integer strided input array, casts the callback's signed 32-bit integer return value to an unsigned 32-bit integer, and assigns results to elements in an unsigned 32-bit integer strided output array.

#include <stdint.h>

// Create underlying byte arrays:
uint8_t x[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
uint8_t out[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };

// Define a pointer to an array containing pointers to strided arrays:
uint8_t *arrays[] = { x, out };

// Define the strides:
int64_t strides[] = { 4, 4 }; // 4 bytes per int32, 4 bytes per uint32

// Define the number of elements over which to iterate:
int64_t shape[] = { 3 };

// Define a callback:
int32_t abs( const int32_t x ) {
    if ( x < 0 ) {
        return -x;
    }
    return x;
}

// Apply the callback:
stdlib_strided_i_u( arrays, shape, strides, (void *)abs );

The function accepts the following arguments:

  • arrays: [inout] uint8_t** array whose first element is a pointer to a strided input array and whose last element is a pointer to a strided output array.
  • shape: [in] int64_t* array whose only element is the number of elements over which to iterate.
  • strides: [in] int64_t* array containing strides (in bytes) for each strided array.
  • fcn: [in] void* a int32_t (*f)(int32_t) function to apply provided as a void pointer.
void stdlib_strided_i_u( uint8_t *arrays[], int64_t *shape, int64_t *strides, void *fcn );

stdlib_strided_k_d( *arrays[], *shape, *strides, *fcn )

Applies a unary callback accepting and returning signed 16-bit integers to a signed 16-bit integer strided input array, casts the callback's signed 16-bit integer return value to a double-precision floating-point number, and assigns results to elements in a double-precision floating-point strided output array.

#include <stdint.h>

// Create underlying byte arrays:
uint8_t x[] = { 0, 0, 0, 0, 0, 0 };
uint8_t out[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };

// Define a pointer to an array containing pointers to strided arrays:
uint8_t *arrays[] = { x, out };

// Define the strides:
int64_t strides[] = { 2, 8 }; // 2 bytes per int16, 8 bytes per double

// Define the number of elements over which to iterate:
int64_t shape[] = { 3 };

// Define a callback:
int16_t scale( const int16_t x ) {
    return x + 10;
}

// Apply the callback:
stdlib_strided_k_d( arrays, shape, strides, (void *)scale );

The function accepts the following arguments:

  • arrays: [inout] uint8_t** array whose first element is a pointer to a strided input array and whose last element is a pointer to a strided output array.
  • shape: [in] int64_t* array whose only element is the number of elements over which to iterate.
  • strides: [in] int64_t* array containing strides (in bytes) for each strided array.
  • fcn: [in] void* a int16_t (*f)(int16_t) function to apply provided as a void pointer.
void stdlib_strided_k_d( uint8_t *arrays[], int64_t *shape, int64_t *strides, void *fcn );

stdlib_strided_k_d_as_d_d( *arrays[], *shape, *strides, *fcn )

Applies a unary callback accepting and returning double-precision floating-point numbers to a signed 16-bit integer strided input array and assigns results to elements in a double-precision floating-point strided output array.

#include <stdint.h>

// Create underlying byte arrays:
uint8_t x[] = { 0, 0, 0, 0, 0, 0 };
uint8_t out[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };

// Define a pointer to an array containing pointers to strided arrays:
uint8_t *arrays[] = { x, out };

// Define the strides:
int64_t strides[] = { 2, 8 }; // 2 bytes per int16, 8 bytes per double

// Define the number of elements over which to iterate:
int64_t shape[] = { 3 };

// Define a callback:
double scale( const double x ) {
    return x + 10.0;
}

// Apply the callback:
stdlib_strided_k_d_as_d_d( arrays, shape, strides, (void *)scale );

The function accepts the following arguments:

  • arrays: [inout] uint8_t** array whose first element is a pointer to a strided input array and whose last element is a pointer to a strided output array.
  • shape: [in] int64_t* array whose only element is the number of elements over which to iterate.
  • strides: [in] int64_t* array containing strides (in bytes) for each strided array.
  • fcn: [in] void* a double (*f)(double) function to apply provided as a void pointer.
void stdlib_strided_k_d_as_d_d( uint8_t *arrays[], int64_t *shape, int64_t *strides, void *fcn );

stdlib_strided_k_f( *arrays[], *shape, *strides, *fcn )

Applies a unary callback accepting and returning signed 16-bit integers to a signed 16-bit integer strided input array, casts the callback's signed 16-bit integer return value to a single-precision floating-point number, and assigns results to elements in a single-precision floating-point strided output array.

#include <stdint.h>

// Create underlying byte arrays:
uint8_t x[] = { 0, 0, 0, 0, 0, 0 };
uint8_t out[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };

// Define a pointer to an array containing pointers to strided arrays:
uint8_t *arrays[] = { x, out };

// Define the strides:
int64_t strides[] = { 2, 4 }; // 2 bytes per int16, 4 bytes per float

// Define the number of elements over which to iterate:
int64_t shape[] = { 3 };

// Define a callback:
int16_t scale( const int16_t x ) {
    return x + 10;
}

// Apply the callback:
stdlib_strided_k_f( arrays, shape, strides, (void *)scale );

The function accepts the following arguments:

  • arrays: [inout] uint8_t** array whose first element is a pointer to a strided input array and whose last element is a pointer to a strided output array.
  • shape: [in] int64_t* array whose only element is the number of elements over which to iterate.
  • strides: [in] int64_t* array containing strides (in bytes) for each strided array.
  • fcn: [in] void* a int16_t (*f)(int16_t) function to apply provided as a void pointer.
void stdlib_strided_k_f( uint8_t *arrays[], int64_t *shape, int64_t *strides, void *fcn );

stdlib_strided_k_f_as_d_d( *arrays[], *shape, *strides, *fcn )

Applies a unary callback accepting and returning double-precision floating-point numbers to a signed 16-bit integer strided input array, casts the callback's double-precision floating-point return value to a single-precision floating-point number, and assigns results to elements in a single-precision floating-point strided output array.

#include <stdint.h>

// Create underlying byte arrays:
uint8_t x[] = { 0, 0, 0, 0, 0, 0 };
uint8_t out[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };

// Define a pointer to an array containing pointers to strided arrays:
uint8_t *arrays[] = { x, out };

// Define the strides:
int64_t strides[] = { 2, 4 }; // 2 bytes per int16, 4 bytes per float

// Define the number of elements over which to iterate:
int64_t shape[] = { 3 };

// Define a callback:
double scale( const double x ) {
    return x + 10.0;
}

// Apply the callback:
stdlib_strided_k_f_as_d_d( arrays, shape, strides, (void *)scale );

The function accepts the following arguments:

  • arrays: [inout] uint8_t** array whose first element is a pointer to a strided input array and whose last element is a pointer to a strided output array.
  • shape: [in] int64_t* array whose only element is the number of elements over which to iterate.
  • strides: [in] int64_t* array containing strides (in bytes) for each strided array.
  • fcn: [in] void* a double (*f)(double) function to apply provided as a void pointer.
void stdlib_strided_k_f_as_d_d( uint8_t *arrays[], int64_t *shape, int64_t *strides, void *fcn );

stdlib_strided_k_f_as_f_f( *arrays[], *shape, *strides, *fcn )

Applies a unary callback accepting and returning single-precision floating-point numbers to a signed 16-bit integer strided input array and assigns results to elements in a single-precision floating-point strided output array.

#include <stdint.h>

// Create underlying byte arrays:
uint8_t x[] = { 0, 0, 0, 0, 0, 0 };
uint8_t out[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };

// Define a pointer to an array containing pointers to strided arrays:
uint8_t *arrays[] = { x, out };

// Define the strides:
int64_t strides[] = { 2, 4 }; // 2 bytes per int16, 4 bytes per float

// Define the number of elements over which to iterate:
int64_t shape[] = { 3 };

// Define a callback:
float scale( const float x ) {
    return x + 10.0f;
}

// Apply the callback:
stdlib_strided_k_f_as_f_f( arrays, shape, strides, (void *)scale );

The function accepts the following arguments:

  • arrays: [inout] uint8_t** array whose first element is a pointer to a strided input array and whose last element is a pointer to a strided output array.
  • shape: [in] int64_t* array whose only element is the number of elements over which to iterate.
  • strides: [in] int64_t* array containing strides (in bytes) for each strided array.
  • fcn: [in] void* a float (*f)(float) function to apply provided as a void pointer.
void stdlib_strided_k_f_as_f_f( uint8_t *arrays[], int64_t *shape, int64_t *strides, void *fcn );

stdlib_strided_k_i( *arrays[], *shape, *strides, *fcn )

Applies a unary callback accepting and returning signed 16-bit integers to a signed 16-bit integer strided input array, casts the callback's signed 16-bit integer return value to a signed 32-bit integer, and assigns results to elements in a signed 32-bit integer strided output array.

#include <stdint.h>

// Create underlying byte arrays:
uint8_t x[] = { 0, 0, 0, 0, 0, 0 };
uint8_t out[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };

// Define a pointer to an array containing pointers to strided arrays:
uint8_t *arrays[] = { x, out };

// Define the strides:
int64_t strides[] = { 2, 4 }; // 2 bytes per int16, 4 bytes per int32

// Define the number of elements over which to iterate:
int64_t shape[] = { 3 };

// Define a callback:
int16_t scale( const int16_t x ) {
    return x + 10;
}

// Apply the callback:
stdlib_strided_k_i( arrays, shape, strides, (void *)scale );

The function accepts the following arguments:

  • arrays: [inout] uint8_t** array whose first element is a pointer to a strided input array and whose last element is a pointer to a strided output array.
  • shape: [in] int64_t* array whose only element is the number of elements over which to iterate.
  • strides: [in] int64_t* array containing strides (in bytes) for each strided array.
  • fcn: [in] void* a int16_t (*f)(int16_t) function to apply provided as a void pointer.
void stdlib_strided_k_i( uint8_t *arrays[], int64_t *shape, int64_t *strides, void *fcn );

stdlib_strided_k_i_as_i_i( *arrays[], *shape, *strides, *fcn )

Applies a unary callback accepting and returning signed 32-bit integers to a signed 16-bit integer stride