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-simp7.c", 3, "reach_error"); } int main (int argc, char **argv) { float f = 0x1.9e0c22p-101f; float g = -0x1.3c9014p-50f; float target = -0x1p-149f; float result = f * g; if(!(result == target)) {reach_error();abort();} return 0; }