Sweden-Number/misc/port.c

52 lines
1.1 KiB
C

/*
* Misc. functions for systems that don't have them
*
* Copyright 1996 Alexandre Julliard
*/
#include "config.h"
#include <sys/types.h>
#include <sys/time.h>
#ifndef HAVE_USLEEP
#ifdef __EMX__
unsigned int usleep (unsigned int useconds) { DosSleep(useconds); }
#else
unsigned int usleep (unsigned int useconds)
{
struct timeval delay;
delay.tv_sec = 0;
delay.tv_usec = useconds;
select( 0, 0, 0, 0, &delay );
return 0;
}
#endif
#endif /* HAVE_USLEEP */
#ifndef HAVE_MEMMOVE
void *memmove( void *dest, const void *src, unsigned int len )
{
register char *dst = dest;
/* Use memcpy if not overlapping */
if ((dst + len <= (char *)src) || ((char *)src + len <= dst))
{
memcpy( dst, src, len );
}
/* Otherwise do it the hard way (FIXME: could do better than this) */
else if (dst < src)
{
while (len--) *dst++ = *((char *)src)++;
}
else
{
dst += len - 1;
src = (char *)src + len - 1;
while (len--) *dst-- = *((char *)src)--;
}
return dest;
}
#endif /* HAVE_MEMMOVE */