typ.h

伯克利做的SFTP安全文件传输协议

// typ.h
// various types and definitions, some for portability, others for convenience
// SafeTP project
// copyright SafeTP Development Group, Inc., 2000  Terms of use are as specified in license.txt

#ifndef __TYP_H
#define __TYP_H

// byte
typedef unsigned char byte;
typedef signed char signed_byte;


// 16-bit integer
typedef unsigned short dbyte;
typedef signed short signed_dbyte;


// 32-bit integer
typedef int int32;
typedef unsigned int uint32;


// NULL
#ifndef NULL
#  define NULL 0
#endif // NULL


// bool
#ifdef LACKS_BOOL
  typedef int bool;
  bool const false=0;
  bool const true=1;
#endif // LACKS_BOOL


// min, max
// changed names to mymin,mymax to avoid problem with gcc-3
#ifndef mymin
  #define mymin(a,b) ((a)<(b)?(a):(b))
#endif
#ifndef mymax
  #define mymax(a,b) ((a)>(b)?(a):(b))
#endif


// tag for definitions of static member functions; there is no
// compiler in existence for which this is useful, but I like
// to see *something* next to implementations of static members
// saying that they are static, and this seems slightly more
// formal than just a comment
#define STATICDEF /*static*/


// often-useful number-of-entries function
#define TABLESIZE(tbl) ((int)(sizeof(tbl)/sizeof((tbl)[0])))


// concise way to loop on an integer range
#define loopi(end) for(int i=0; i<end; i++)
#define loopj(end) for(int j=0; j<end; j++)
#define loopk(end) for(int k=0; k<end; k++)


// for using selfCheck methods
// to explicitly check invariants in debug mode
#ifndef NDEBUG
#  define SELFCHECK() selfCheck()
#else
#  define SELFCHECK() ((void)0)
#endif


// division with rounding towards +inf
// (when operands are positive)
template <class T>
inline T div_up(T const &x, T const &y)
{ return (x + y - 1) / y; }


// mutable
#ifdef __BORLANDC__
#  define MUTABLE
#  define EXPLICIT
#else
#  define MUTABLE mutable
#  define EXPLICIT explicit
#endif


#define SWAP(a,b) \
  temp = a;       \
  a = b;          \
  b = temp /*user supplies semicolon*/


#endif // __TYP_H