// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Copyright (C) 2026 Richard QIn
 */

#ifndef _CTYPE_H
#define _CTYPE_H

#ifdef __cplusplus
extern "C"
{
#endif

    static inline int isdigit(int c) { return c >= '0' && c <= '9'; }
    static inline int islower(int c) { return c >= 'a' && c <= 'z'; }
    static inline int isupper(int c) { return c >= 'A' && c <= 'Z'; }
    static inline int isalpha(int c) { return islower(c) || isupper(c); }
    static inline int isalnum(int c) { return isalpha(c) || isdigit(c); }
    static inline int isspace(int c) { return c == ' ' || c == '\t' || c == '\n' || c == '\v' || c == '\f' || c == '\r'; }
    static inline int isprint(int c) { return c >= 32 && c <= 126; }
    static inline int iscntrl(int c) { return c < 32 || c == 127; }
    static inline int isxdigit(int c) { return isdigit(c) || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F'); }

    static inline int tolower(int c) { return isupper(c) ? c + 32 : c; }
    static inline int toupper(int c) { return islower(c) ? c - 32 : c; }

#ifdef __cplusplus
}
#endif

#endif