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/**
* @license Apache-2.0
*
* Copyright (c) 2021 The Stdlib Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "stdlib/ndarray/base/unary.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>
void print_ndarray_contents( const struct ndarray *x ) {
int64_t i;
uint8_t v;
int8_t s;
for ( i = 0; i < stdlib_ndarray_length( x ); i++ ) {
s = stdlib_ndarray_iget_uint8( x, i, &v );
if ( s != 0 ) {
fprintf( stderr, "Unable to resolve data element.\n" );
exit( EXIT_FAILURE );
}
fprintf( stdout, "data[%"PRId64"] = %hhu\n", i, v );
}
}
uint8_t scale( const uint8_t x ) {
return x * 10;
}
int main() {
// Define the ndarray data type:
enum STDLIB_NDARRAY_DTYPE dtype = STDLIB_NDARRAY_UINT8;
// Create underlying byte arrays:
uint8_t xbuf[] = { 1, 2, 3, 4, 5, 6, 7, 8 };
uint8_t ybuf[] = { 0, 0, 0, 0, 0, 0, 0, 0 };
// Define the number of dimensions:
int64_t ndims = 3;
// Define the array shapes:
int64_t shape[] = { 2, 2, 2 };
// Define the strides:
int64_t sx[] = { 4, 2, 1 };
int64_t sy[] = { 4, 2, 1 };
// 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( dtype, xbuf, ndims, shape, 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( dtype, ybuf, ndims, shape, 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 };
// Apply the callback:
int8_t status = stdlib_ndarray_b_b( arrays, (void *)scale );
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 );
}
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