编程语言及工具
1#ifndef COMDEF_H 2#define COMDEF_H 3//头文件内容 4#endif
1typedef unsigned char boolean; /* Boolean value type. */ 2typedef unsigned long int uint32; /* Unsigned 32 bit value */ 3typedef unsigned short uint16; /* Unsigned 16 bit value */ 4typedef unsigned char uint8; /* Unsigned 8 bit value */ 5typedef signed long int int32; /* Signed 32 bit value */ 6typedef signed short int16; /* Signed 16 bit value */ 7typedef signed char int8; /* Signed 8 bit value */ 下面的不建议使用
1typedef unsigned char byte; /* Unsigned 8 bit value type. */ 2typedef unsigned short word; /* Unsinged 16 bit value type. */ 3typedef unsigned long dword; /* Unsigned 32 bit value type. */ 4typedef unsigned char uint1; /* Unsigned 8 bit value type. */ 5typedef unsigned short uint2; /* Unsigned 16 bit value type. */ 6typedef unsigned long uint4; /* Unsigned 32 bit value type. */ 7typedef signed char int1; /* Signed 8 bit value type. */ 8typedef signed short int2; /* Signed 16 bit value type. */ 9typedef long int int4; /* Signed 32 bit value type. */ 10typedef signed long sint31; /* Signed 32 bit value */ 11typedef signed short sint15; /* Signed 16 bit value */ 12typedef signed char sint7; /* Signed 8 bit value */
1#define MEM_B( x ) ( *( (byte *) (x) ) ) 2#define MEM_W( x ) ( *( (word *) (x) ) )
1#define MAX( x, y ) ( ((x) > (y)) ? (x) : (y) ) 2#define MIN( x, y ) ( ((x) < (y)) ? (x) : (y) )
1#define FPOS( type, field ) 2/*lint -e545 */ ( (dword) &(( type *) 0)-> field ) /*lint +e545 */
1#define FSIZ( type, field ) sizeof( ((type *) 0)->field )
1#define FLIPW( ray ) ( (((word) (ray)[0]) * 256) + (ray)[1] )
1#define FLOPW( ray, val ) 2(ray)[0] = ((val) / 256); 3(ray)[1] = ((val) & 0xFF)
1#define B_PTR( var ) ( (byte *) (void *) &(var) ) 2#define W_PTR( var ) ( (word *) (void *) &(var) )
1#define WORD_LO(xxx) ((byte) ((word)(xxx) & 255)) 2#define WORD_HI(xxx) ((byte) ((word)(xxx) >> 8))
1#define RND8( x ) ((((x) + 7) / 8 ) * 8 )
1#define UPCASE( c ) ( ((c) >= 'a' && (c) <= 'z') ? ((c) - 0x20) : (c) )
1#define DECCHK( c ) ((c) >= '0' && (c) <= '9')
1#define HEXCHK( c ) ( ((c) >= '0' && (c) <= '9') || 2((c) >= 'A' && (c) <= 'F') || 3((c) >= 'a' && (c) <= 'f') )
1#define INC_SAT( val ) (val = ((val)+1 > (val)) ? (val)+1 : (val))
1#define ARR_SIZE( a ) ( sizeof( (a) ) / sizeof( (a[0]) ) )
1#define MOD_BY_POWER_OF_TWO( val, mod_by ) 2( (dword)(val) & (dword)((mod_by)-1) )
1#define inp(port) (*((volatile byte *) (port))) 2#define inpw(port) (*((volatile word *) (port))) 3#define inpdw(port) (*((volatile dword *)(port))) 4#define outp(port, val) (*((volatile byte *) (port)) = ((byte) (val))) 5#define outpw(port, val) (*((volatile word *) (port)) = ((word) (val))) 6#define outpdw(port, val) (*((volatile dword *) (port)) = ((dword) (val)))
1_ L I N E _ 2_ F I L E _ 3_ D A T E _ 4_ T I M E _ 5_ S T D C _ 如果编译不是标准的,则可能仅支持以上宏名中的几个,或根本不支持。记住编译程序也许还提供其它预定义的宏名。
_ L I N E _
及_ F I L E _
宏指令在有关# l i n e
的部分中已讨论,这里讨论其余的宏名。_ D AT E _
宏指令含有形式为月/日/年的串,表示源文件被翻译到代码时的日期。源代码翻译到目标代码的时间作为串包含在_ T I M E _
中。串形式为时:分:秒。如果实现是标准的,则宏_ S T D C _
含有十进制常量1。如果它含有任何其它数,则实现是非标准的。可以定义宏,例如: 当定义了_DEBUG
,输出数据信息和所在文件所在行1#ifdef _DEBUG 2#define DEBUGMSG(msg,date) printf(msg);printf(“%d%d%d”,date,_LINE_,_FILE_) 3#else 4#define DEBUGMSG(msg,date) 5#endif
1#define ADD(a,b) (a+b) 用
do{}while(0)
语句包含多语句防止错误例如:1#difne DO(a,b) a+b; 2a++; 应用时:
1if(….) 2DO(a,b); //产生错误 3else 解决方法:
1#difne DO(a,b) do{a+b; 2a++;}while(0) 审核编辑:汤梓红
全部0条评论
快来发表一下你的评论吧 !