ref: 15d3cccf394c8c68e3d6e8311c3b50910ad23f91 dir: /tests/scc/execute/0036-notneg.c/
int main() { int x; x = 4; if(!x != 0) return 1; if(!!x != 1) return 1; if(-x != 0 - 4) return 1; return 0; }