utility.h

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/* BSD 3-Clause License
 *
 * Copyright © 2008-2026, Jice and the libtcod contributors.
 * All rights reserved.
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 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright notice,
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 *    and/or other materials provided with the distribution.
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 *    this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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#pragma once
#ifndef LIBTCOD_UTILITY_H
#define LIBTCOD_UTILITY_H
#include <assert.h>
#include <stddef.h>
 
#define TCOD_MAX(a, b) (((a) > (b)) ? (a) : (b))
#define TCOD_MIN(a, b) (((a) < (b)) ? (a) : (b))
#define TCOD_ABS(a) ((a) < 0 ? -(a) : (a))
#define TCOD_CLAMP(a, b, x) ((x) < (a) ? (a) : ((x) > (b) ? (b) : (x)))
#define TCOD_LERP(a, b, x) ((a) + (x) * ((b) - (a)))

static inline size_t TCOD_strscpy(char* __restrict dest, const char* __restrict src, size_t count) {
  assert(dest != NULL && src != NULL);
  if (count <= 0) return 0;
  for (size_t i = 0; i < count; ++i) {
    dest[i] = src[i];
    if (src[i] == '\0') return i;
  }
  dest[count - 1] = '\0';
  return count - 1;
}
#endif