modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/execute/ieee/builtin-nan-1.c (about) 1 /* PR middle-end/19983 */ 2 3 typedef __SIZE_TYPE__ size_t; 4 5 extern void abort(void); 6 extern int memcmp(const void *, const void *, size_t); 7 8 double n1 = __builtin_nan("0x1"); 9 double n2 = __builtin_nan("0X1"); 10 11 int main() 12 { 13 if (memcmp (&n1, &n2, sizeof(double))) 14 abort(); 15 return 0; 16 } 17