include/sort.h

   1 /* SPDX-License-Identifier: GPL-2.0+ */
   2 /*
   3  * Copyright 2019 Google LLC
   4  */
   5
   6 #ifndef __SORT_H
   7 #define __SORT_H
   8
   9 /**
  10  * qsort() - Use the quicksort algorithm to sort some values
  11  *
  12  * @base: Base address of array to sort
  13  * @nmemb: Number of members to sort
  14  * @size: Size of each member in bytes
  15  * @compar: Comparison function which should return:
  16  *      < 0 if element at s1 < element at s2,
  17  *        0 if element at s1 == element at s2,
  18  *      > 0 if element at s1 > element at s2,
  19  */
  20 void qsort(void *base, size_t nmemb, size_t size,
  21            int (*compar)(const void *s1, const void *s2));
  22
  23 /**
  24  * strcmp_compar() - compar function for string arrays
  25  *
  26  * This can be passed to qsort when a string array is being sorted
  27  *
  28  * @s1: First string to compare
  29  * @s2: Second string to compare
  30  * @return comparison value (less than, equal to, or greater than 0)
  31  */
  32 int strcmp_compar(const void *s1, const void *s2);
  33
  34 #endif