main函数文件double.c 及编译后的文件
double.c ccg2xrkj.s ///////////////////////////////////////////// name@ubuntu:~$/usr/lib/gcc/x86_64-linux-gnu/4.7/cc1-quiet-v-imultiarchx86_64-linux-gnudouble.c-quiet-dumpbasedouble.c-mtune=generic-march=x86-64-auxbasedouble-version-fstack-protector-o/tmp/ccg2xrkj.s GNUC(Ubuntu/