标签：
第一种是yes和no类型的：常用的TRUE,YES,ENABLE,ACTIVE,VALID,ON,SET,OK都是1的意思，反之则是0：
#define DEF_FALSE 0u #define DEF_TRUE 1u #define DEF_NO 0u #define DEF_YES 1u #define DEF_DISABLED 0u #define DEF_ENABLED 1u #define DEF_INACTIVE 0u #define DEF_ACTIVE 1u #define DEF_INVALID 0u #define DEF_VALID 1u #define DEF_OFF 0u #define DEF_ON 1u #define DEF_CLR 0u #define DEF_SET 1u #define DEF_FAIL 0u #define DEF_OK 1u
第二种是常用的数字的定义。例如DEF_BIT_XX的意思就是二进制的一个1后面有XX个零，例如DEF_BIT_00代表1后面一个0，那就是1，也就是0x01u，而DEF_BIT_07就是1后面7个0，也就是二进制的10000000，这就是十六进制的0x80u。
#define DEF_BIT_00 0x01u #define DEF_BIT_01 0x02u #define DEF_BIT_02 0x04u #define DEF_BIT_03 0x08u #define DEF_BIT_04 0x10u #define DEF_BIT_05 0x20u #define DEF_BIT_06 0x40u #define DEF_BIT_07 0x80u #define DEF_BIT_08 0x0100u #define DEF_BIT_09 0x0200u #define DEF_BIT_10 0x0400u #define DEF_BIT_11 0x0800u #define DEF_BIT_12 0x1000u #define DEF_BIT_13 0x2000u #define DEF_BIT_14 0x4000u #define DEF_BIT_15 0x8000u #define DEF_BIT_16 0x00010000u #define DEF_BIT_17 0x00020000u #define DEF_BIT_18 0x00040000u #define DEF_BIT_19 0x00080000u #define DEF_BIT_20 0x00100000u #define DEF_BIT_21 0x00200000u #define DEF_BIT_22 0x00400000u #define DEF_BIT_23 0x00800000u #define DEF_BIT_24 0x01000000u #define DEF_BIT_25 0x02000000u #define DEF_BIT_26 0x04000000u #define DEF_BIT_27 0x08000000u #define DEF_BIT_28 0x10000000u #define DEF_BIT_29 0x20000000u #define DEF_BIT_30 0x40000000u #define DEF_BIT_31 0x80000000u /*$PAGE*/ #define DEF_BIT_32 0x0000000100000000u #define DEF_BIT_33 0x0000000200000000u #define DEF_BIT_34 0x0000000400000000u #define DEF_BIT_35 0x0000000800000000u #define DEF_BIT_36 0x0000001000000000u #define DEF_BIT_37 0x0000002000000000u #define DEF_BIT_38 0x0000004000000000u #define DEF_BIT_39 0x0000008000000000u #define DEF_BIT_40 0x0000010000000000u #define DEF_BIT_41 0x0000020000000000u #define DEF_BIT_42 0x0000040000000000u #define DEF_BIT_43 0x0000080000000000u #define DEF_BIT_44 0x0000100000000000u #define DEF_BIT_45 0x0000200000000000u #define DEF_BIT_46 0x0000400000000000u #define DEF_BIT_47 0x0000800000000000u #define DEF_BIT_48 0x0001000000000000u #define DEF_BIT_49 0x0002000000000000u #define DEF_BIT_50 0x0004000000000000u #define DEF_BIT_51 0x0008000000000000u #define DEF_BIT_52 0x0010000000000000u #define DEF_BIT_53 0x0020000000000000u #define DEF_BIT_54 0x0040000000000000u #define DEF_BIT_55 0x0080000000000000u #define DEF_BIT_56 0x0100000000000000u #define DEF_BIT_57 0x0200000000000000u #define DEF_BIT_58 0x0400000000000000u #define DEF_BIT_59 0x0800000000000000u #define DEF_BIT_60 0x1000000000000000u #define DEF_BIT_61 0x2000000000000000u #define DEF_BIT_62 0x4000000000000000u #define DEF_BIT_63 0x8000000000000000u
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原文地址：http://www.cnblogs.com/jiwangbujiu/p/5562310.html
