time-to-botec

b_f.c (2299B)

---

 /**
 * @license Apache-2.0
 *
 * Copyright (c) 2020 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/strided/base/unary/b_f.h"
 #include "stdlib/strided/base/unary/typedefs.h"
 #include "stdlib/strided/base/unary/macros.h"
 #include <stdint.h>
 
 /**
 * 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.
 *
 * @param arrays   array whose first element is a pointer to a strided input array and whose last element is a pointer to a strided output array
 * @param shape    array whose only element is the number of elements over which to iterate
 * @param strides  array containing strides (in bytes) for each strided array
 * @param fcn      callback
 *
 * @example
 * #include "stdlib/strided/base/unary/b_f.h"
 * #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( uint8_t x ) {
 *     return x + 10;
 * }
 *
 * // Apply the callback:
 * stdlib_strided_b_f( arrays, shape, strides, (void *)scale );
 */
 void stdlib_strided_b_f( uint8_t *arrays[], int64_t *shape, int64_t *strides, void *fcn ) {
 	UnaryFcnUint8 *f = (UnaryFcnUint8 *)fcn;
 	STDLIB_STRIDED_UNARY_LOOP_CLBK( uint8_t, float )
 }