usr/src/usr.bin/tn3270/general/general.h

/*
 * Some general definitions.
 *
 * @(#)general.h        3.1 (Berkeley) %G%
 */


#define numberof(x)     (sizeof x/sizeof x[0])
#define highestof(x)    (numberof(x)-1)

#if     defined(unix)
#define ClearElement(x)         bzero((char *)&x, sizeof x)
#define ClearArray(x)           bzero((char *)x, sizeof x)
#else   /* defined(unix) */
#define ClearElement(x)         memset((char *)&x, 0, sizeof x)
#define ClearArray(x)           memset((char *)x, 0, sizeof x)
#endif  /* defined(unix) */

#if     defined(unix)           /* Define BSD equivalent mem* functions */
#define memcpy(dest,src,n)      bcopy(src,dest,n)
#define memmove(dest,src,n)     bcopy(src,dest,n)
#define memset(s,c,n)           if (c == 0) { \
                                    bzero(s,n); \
                                } else { \
                                    register char *src = s; \
                                    register int count = n; \
                                        \
                                    while (count--) { \
                                        *src++ = c; \
                                    } \
                                }
#define memcmp(s1,s2,n)         bcmp(s1,s2,n)
#endif  /* defined(unix) */