Put to adjacent view in the horizontal middle of screen

center2views.m

// No working anyway

    CGSize screenSz = [UIScreen mainScreen].bounds.size;
    
    CGSize leftSz = [self.haveAccountLabel intrinsicContentSize];
    CGSize rightSz = [self.signInButton intrinsicContentSize];
    CGFloat contentWidth = leftSz.width + rightSz.width + 8;
    CGFloat x = (screenSz.width - contentWidth) / 2;
    if (x < 0) {
        NSLog(@"Text overflow %lf > %lf", contentWidth, screenSz.width);
    } else {
        _haveAccountLabel.translatesAutoresizingMaskIntoConstraints = YES;
        _signInButton.translatesAutoresizingMaskIntoConstraints = YES;
        CGRect f = _haveAccountLabel.frame;
        f.origin.x = 0;
        f.size.width = x + leftSz.width;
        self.haveAccountLabel.frame = f;
        
        f = self.signInButton.frame;
        f.origin.x = x + leftSz.width + 8;
        f.size.width = screenSz.width - f.origin.x;
        self.signInButton.frame = f;
    }