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/*
 
@deftypefn Supplemental char* strdup (const char *@var{s})
 
Returns a pointer to a copy of @var{s} in memory obtained from
@code{malloc}, or @code{NULL} if insufficient memory was available.
 
@end deftypefn
 
*/
 
char *
strdup(s)
     char *s;
{
    char *result = (char*)malloc(strlen(s) + 1);
    if (result == (char*)0)
	return (char*)0;
    strcpy(result, s);
    return result;
}