/* $OpenBSD: toint.c,v 1.5 2004/04/02 20:37:42 mickey 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); } 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); i = toint(INT_MAX); if (i != INT_MIN) { printf("%d != %d\n", i, INT_MIN); exit(1); } exit(0); }