always_assert.h

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#pragma once
 
#include <cstdio>
#include <cstdlib>
 
namespace clustering {

[[noreturn]] inline void alwaysAssertFail(const char *cond, const char *file, int line) noexcept {
  std::fprintf(stderr, "clustering: always-assert failed: %s at %s:%d\n", cond, file, line);
  std::abort();
}
 
} // namespace clustering

#define CLUSTERING_ALWAYS_ASSERT(cond)                                                             \
  do {                                                                                             \
    if (!(cond)) {                                                                                 \
      ::clustering::alwaysAssertFail(#cond, __FILE__, __LINE__);                                   \
    }                                                                                              \
  } while (0)