modernc.org/cc@v1.0.1/testdata/gcc-6.3.0/gcc/testsuite/gcc.c-torture/execute/ieee/unsafe-fp-assoc-1.x (about)

     1  if [istarget "avr-*-*"] {
     2      # AVR doubles are floats
     3      return 1
     4  }
     5  return 0