diff options
author | Simon Glass <sjg@chromium.org> | 2019-11-14 12:57:19 -0700 |
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committer | Tom Rini <trini@konsulko.com> | 2019-12-02 18:23:08 -0500 |
commit | 8bef79bf3c30cd1fc5367cc1f78f72e6552629e9 (patch) | |
tree | 318647c77cc039fd2a0e8d611c2156027a3c4691 /include/sort.h | |
parent | f083583786913de7652312c137dd4fea5c2e291f (diff) |
common: Move sorting functions to their own header file
These don't need to be in common.h so move them out into a new header.
Also add some missing comments.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
Diffstat (limited to 'include/sort.h')
-rw-r--r-- | include/sort.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/include/sort.h b/include/sort.h new file mode 100644 index 0000000000..0c6b588fcb --- /dev/null +++ b/include/sort.h @@ -0,0 +1,34 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright 2019 Google LLC + */ + +#ifndef __SORT_H +#define __SORT_H + +/** + * qsort() - Use the quicksort algorithm to sort some values + * + * @base: Base address of array to sort + * @nmemb: Number of members to sort + * @size: Size of each member in bytes + * @compar: Comparison function which should return: + * < 0 if element at s1 < element at s2, + * 0 if element at s1 == element at s2, + * > 0 if element at s1 > element at s2, + */ +void qsort(void *base, size_t nmemb, size_t size, + int (*compar)(const void *s1, const void *s2)); + +/** + * strcmp_compar() - compar function for string arrays + * + * This can be passed to qsort when a string array is being sorted + * + * @s1: First string to compare + * @s2: Second string to compare + * @return comparison value (less than, equal to, or greater than 0) + */ +int strcmp_compar(const void *s1, const void *s2); + +#endif |