NetBSD/gnu/usr.bin/fgrep/std.c

56 lines
984 B
C
Raw Normal View History

1993-03-21 12:45:37 +03:00
/* std.c - compensate for a few missing library functions.
In the Public Domain; written by Mike Haertel. */
#include "std.h"
#include "unix.h"
#ifdef X_memmove
PTR
DEFUN(memmove, (d, s, n), PTR d AND PTRCONST s AND size_t n)
{
char *dd;
const char *ss;
dd = d;
ss = s;
if (dd > ss && dd < ss + n)
{
dd += n;
ss += n;
while (n--)
*--dd = *--ss;
}
else
while (n--)
*dd++ = *ss++;
return d;
}
#endif /* X_memmove */
#ifdef X_remove
#if defined(unix) || defined(__unix__)
int
DEFUN(remove, (filename), const char *filename)
{
extern int EXFUN(unlink, (const char *));
return unlink(filename);
}
#endif /* unix */
#endif /* X_strerror */
#ifdef X_strerror
#if defined(unix) || defined(__unix__)
char *
DEFUN(strerror, (errnum), int errnum)
{
extern int sys_nerr;
extern char *sys_errlist[];
if (errnum > 0 && errnum < sys_nerr)
return sys_errlist[errnum];
return "";
}
#endif /* unix */
#endif /* X_strerror */