assert.h

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// -*- C++ -*-
#include <iostream>
#include <sstream>
 
#define CXZ_ERRTAG __FILE__ << '@' << __LINE__ << '(' << __func__ << "): error"
 
#define CXZ_WARNTAG __FILE__ << '@' << __LINE__ << ": warning"
 
#define CXZ_ERROR(errmsg) {                     \
    auto mkerr = [&](){ std::stringstream ss; ss << CXZ_ERRTAG << ": " << errmsg << std::flush; return ss.str(); }; \
    throw std::runtime_error(mkerr()); }
 
#define CXZ_WARNING(errmsg) {\
    std::cerr << CXZ_WARNTAG << ": " << errmsg << std::endl; }
 
#define CXZ_ASSERT(statement, errmsg) if(not (statement)) { CXZ_ERROR(errmsg); }