An attempt at some saner min-max-clamp macros for C and Objective-C. Require a modern compiler (C11) with support for statement expressions (Gnu11).

SaneMinMaxMacros.h

#pragma once

#define _CheckTypes(a,b) _Static_assert(_Generic(a, typeof (b):1, default: 0), "Mismatched types")

#define Min(a,b) \
    ({ \
        const typeof (a) _a = (a); \
        const typeof (b) _b = (b); \
        _CheckTypes(_a,_b); \
        (_a < _b ? _a : _b); \
    })

#define Max(a,b) \
    ({ \
        const typeof (a) _a = (a); \
        const typeof (b) _b = (b); \
        _CheckTypes(_a,_b); \
        (_a > _b ? _a : _b); \
    })

#define Clamp(x,min,max) \
    ({ \
        const typeof (x) _x = (x); \
        const typeof (min) _min = (min); \
        const typeof (max) _max = (max); \
        _CheckTypes(_x,_min); \
        _CheckTypes(_x,_max); \
        (_x > _max ? _max : (_x < _min ? _min : _x)); \
    })

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