Cmp.h

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/**
 * @file Cmp.h
 * @author ae2f
 * @brief 
 * @date 2025-02-01
 * 
 * @copyright Copyright (c) 2025
 * 
 */
 
#if !defined(ae2f_Cmp_h)
#define ae2f_Cmp_h
 
#include "Cmp/Fun.h"
 
/// @warning
/// Two parameters must be comparable with operator.
/// @return
/// One bigger.
#define ae2f_CmpGetGt(a, b)     ((a) > (b) ? (a) : (b))
 
/// @warning
/// Two parameters must be comparable with operator.
/// @return
/// One smaller.
#define ae2f_CmpGetLs(a, b) ((a) < (b) ? (a) : (b))
 
/// @return
/// The absolute different of two.
#define ae2f_CmpDiff(a, b)          (ae2f_CmpGetGt(a, b) - ae2f_CmpGetLs(a, b))
 
/// @brief
/// Gets the member from the pointer.
/// Given nullptr, the return will be alter.
/// @param ptr The pointer for getting member.
/// @param member The valid member's name. [from the structure]
/// @param alter The alternative value when given nullptr.
#define ae2f_CmpGetMem(ptr, member, alter) ((ptr) ? ((ptr)->member) : (alter))
 
/// @brief
/// Returns ptr's self.
/// Given nullptr, the return will be alt.
/// @param ptr Self Referring
/// @param alt The alternative value.
#define ae2f_CmpGetSelf(ptr, alt) ((ptr) ? (ptr) : (alt))
#endif // !defined(ae2f_Macro_Compare_h)