It's not possible. A single 200x200 image cannot fill a space larger than 200x200 without stretching/scaling.
You do have various options for displaying it in an UIImageView
though See Apple's Documentation on UIViewContentMode for the contentMode
options.
UIImage *img = [UIImage imageNamed:@"glyph"];
self.imageView.image = img;
self.imageView.contentMode = UIViewContentModeScaleAspectFit;