#include <stdio.h>
#include <stdarg.h>
#include <stdint.h>
#include <signal.h>
#include <setjmp.h>

#define SENTINEL 0xDEADBEEFCAFEBABEULL
static sigjmp_buf jmp;
static void handler(int s) { siglongjmp(jmp, 1); }

static void _print(int d, ...) {
  va_list ap; va_start(ap, d);
  uint64_t *slot = (uint64_t *)(void *)ap;
  
  struct sigaction sa = {.sa_handler = handler}, ob, os;
  sigaction(SIGBUS, &sa, &ob); sigaction(SIGSEGV, &sa, &os);
  
  for (uint64_t v; (v = *slot++) != SENTINEL;) {
    int t = 0;
    if (!sigsetjmp(jmp, 1)) { 
      unsigned char c = *(char *)(uintptr_t)v; 
      t = (c - 9u < 5) || (c - 0x20u < 0x5F); 
    }
    
    if (!t && ((v >> 52 & 0x7FF) - 1u < 0x7FE)) t = 2;
    double f; __builtin_memcpy(&f, &v, 8);
    
    t == 1 
      ? printf("%s", (char *)(uintptr_t)v) 
      : t == 2 ? printf("%g", f) 
      : printf("%d", (int)v);
  }
  
  sigaction(SIGBUS, &ob, 0); sigaction(SIGSEGV, &os, 0);
}

#define print(...) _print(0, __VA_ARGS__, SENTINEL)

int main(void) {
  print("This print works in c and does not care about types\n");

  char *name = "Pablo";
  int age = 67;
  double pi = 3.14159;
  long big = 42L;

  print("name: ", name, " age: ", age, " pi: ", pi, " big: ", big, "\n");
}