如何进行64位数据的算术运算？ 算术运算, 数据

hitmissile

因为程序中进行了64位数据的算术运算，提示错误如下：

Link error: Undefined "__rt_add64"
Referenced from "btd" in main.c
Referenced from "btu" in main.c

Link error: Undefined "__rt_and64"
Referenced from "btd" in main.c
Referenced from "btu" in main.c

Link error: Undefined "__rt_or64"
Referenced from "btd" in main.c
Referenced from "btu" in main.c

请问如何才能进行64位数据运算？

hitmissile

不是重复定义,重复定义是multi-define
比如第一个"__rt_add64"，因为在函数btd和btu都用到了64位的加运算。