d87eea35fa
This is the first step in preparation for: https://discourse.llvm.org/t/rfc-make-clang-builtin-math-functions-constexpr-with-llvm-libc-to-support-c-23-constexpr-math-functions/86450
45 lines
1.2 KiB
C++
45 lines
1.2 KiB
C++
//===-- Implementation of hsearch_r -----------------------------*- C++ -*-===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "src/search/hsearch_r.h"
|
|
#include "src/__support/HashTable/table.h"
|
|
#include "src/__support/libc_errno.h"
|
|
#include "src/__support/macros/config.h"
|
|
|
|
namespace LIBC_NAMESPACE_DECL {
|
|
LLVM_LIBC_FUNCTION(int, hsearch_r,
|
|
(ENTRY item, ACTION action, ENTRY **retval,
|
|
struct hsearch_data *htab)) {
|
|
if (htab == nullptr) {
|
|
libc_errno = EINVAL;
|
|
return 0;
|
|
}
|
|
internal::HashTable *table =
|
|
static_cast<internal::HashTable *>(htab->__opaque);
|
|
switch (action) {
|
|
case FIND:
|
|
*retval = table->find(item.key);
|
|
if (*retval == nullptr) {
|
|
libc_errno = ESRCH;
|
|
return 0;
|
|
}
|
|
break;
|
|
case ENTER:
|
|
*retval = internal::HashTable::insert(table, item);
|
|
htab->__opaque = table;
|
|
if (*retval == nullptr) {
|
|
libc_errno = ENOMEM;
|
|
return 0;
|
|
}
|
|
break;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
} // namespace LIBC_NAMESPACE_DECL
|