char *ev;  if (!_pr_initialized) _PR_ImplicitInitialization();  _PR_LOCK_ENV(); ev = _PR_MD_GET_ENV(var); _PR_UNLOCK_ENV(); return ev;
return (PR_SetEnv(string) == PR_SUCCESS) ? PR_TRUE : PR_FALSE;
PR_IMPLEMENT(char*) PR_GetEnv(const char *var){    char *ev;    if (!_pr_initialized) _PR_ImplicitInitialization();    _PR_LOCK_ENV();    ev = _PR_MD_GET_ENV(var);    _PR_UNLOCK_ENV();    return ev;}