libc/src/stdlib/qsort_r.cpp

   1 //===-- Implementation of qsort_r -----------------------------------------===//
   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_r.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_r,
  19                    (void *array, size_t array_size, size_t elem_size,
  20                     int (*compare)(const void *, const void *, void *),
  21                     void *arg)) {
  22   if (array == nullptr || array_size == 0 || elem_size == 0)
  23     return;
  24   internal::Comparator c(compare, arg);
  25   auto arr = internal::Array(reinterpret_cast<uint8_t *>(array), array_size,
  26                              elem_size, c);
  27
  28   internal::sort(arr);
  29 }
  30
  31 } // namespace LIBC_NAMESPACE_DECL