/* $OpenBSD: toint.c,v 1.7 2010/02/06 18:53:19 otto Exp $ */ /* Written by Michael Shalayeff, 2003, Public domain. */ #include #include #include #include #include #include void sigfpe(int sig, siginfo_t *si, void *v) { char buf[132]; if (si) { snprintf(buf, sizeof(buf), "sigfpe: trap=%d code=%d addr=%p\n", si->si_trapno, si->si_code, si->si_addr); write(1, buf, strlen(buf)); } _exit(1); } int toint(double d) { return (int)(d + 1); } long long toll(double d) { return (long long)d; } int main(int argc, char *argv[]) { struct sigaction sa; int i; memset(&sa, 0, sizeof(sa)); sa.sa_sigaction = sigfpe; sa.sa_flags = SA_SIGINFO; sigaction(SIGFPE, &sa, NULL); if (toint(8.6) != 9) exit(1); if (toll(2.3456e+17) != 234560000000000000LL) exit(1); exit(0); }