xref: /llvm-project/libc/src/stdlib/qsort.cpp (revision a738d81cd2822698539b0482af48d49d91ea5a2e)
1 //===-- Implementation of qsort -------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #include "src/stdlib/qsort.h"
10 #include "src/__support/common.h"
11 #include "src/__support/macros/config.h"
12 #include "src/stdlib/qsort_util.h"
13 
14 #include <stdint.h>
15 
16 namespace LIBC_NAMESPACE_DECL {
17 
18 LLVM_LIBC_FUNCTION(void, qsort,
19                    (void *array, size_t array_size, size_t elem_size,
20                     int (*compare)(const void *, const void *))) {
21 
22   const auto is_less = [compare](const void *a, const void *b) -> bool {
23     return compare(a, b) < 0;
24   };
25 
26   internal::unstable_sort(array, array_size, elem_size, is_less);
27 }
28 
29 } // namespace LIBC_NAMESPACE_DECL
30