utils.h

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/*
 * SPDX-FileCopyrightText: 2023 Otto-von-Guericke-Universität Magdeburg
 * SPDX-License-Identifier: LGPL-2.1-only
 */
 
#pragma once

 
#ifdef __cplusplus
extern "C" {
#endif

#define CONCAT_NOEXPAND(a, b) a ## b

#define CONCAT(a, b) CONCAT_NOEXPAND(a, b)

#define CONCAT3_NOEXPAND(a, b, c) a ## b ## c

#define CONCAT3(a, b, c) CONCAT3_NOEXPAND(a, b, c)

#define CONCAT4_NOEXPAND(a, b, c, d) a ## b ## c ## d

#define CONCAT4(a, b, c, d) CONCAT4_NOEXPAND(a, b, c, d)
 
/* For compatibility with vendor headers, only provide MAX() and MIN() if not
 * provided. (The alternative approach of using #undef has the downside that
 * vendor header files may provide a smarter version of MAX() / MIN() that does
 * not evaluate the argument twice and rely on this).
 */
#ifndef MAX
#define MAX(a, b) ((a) > (b) ? (a) : (b))
#endif
 
#ifndef MIN
#define MIN(a, b) ((a) < (b) ? (a) : (b))
#endif
 
#ifndef ABS
#define ABS(x) ((x) > 0 ? (x) : -(x))
#endif

#define LIMIT(val, low, high) ((val < low) ? low : (val > high) ? high : val)
 
#ifdef __cplusplus
}
#endif