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1/*
2 * PROJECT: ReactOS NT CRT library
3 * LICENSE: MIT (https://spdx.org/licenses/MIT)
4 * PURPOSE: Implementation of tolower
5 * COPYRIGHT: Copyright 2025 Timo Kreuzer <timo.kreuzer@reactos.org>
6 */
7
8#include <string.h>
9
10_Check_return_
11_CRTIMP
12int
13__cdecl
14tolower(
15 _In_ int _C)
16{
17 if (((char)_C >= 'A') && ((char)_C <= 'Z'))
18 {
19 return _C + ('a' - 'A');
20 }
21
22 return _C;
23}