extern void abort(void); extern void __assert_fail(const char *, const char *, unsigned int, const char *) __attribute__ ((__nothrow__ , __leaf__)) __attribute__ ((__noreturn__)); void reach_error() { __assert_fail("0", "float-no-simp1.c", 3, "reach_error"); } int main() { unsigned int i, j; double d; i=100.0; d=i; j=d; if(!(j==100)) {reach_error();abort();} }