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# 3.8 Example

Here is an example of a simple function in C and in C++. Figure 3.1 shows the example from section 5 of the VIPS Application Programmers' Guide, and figure 3.2 shows the same function in C++.

This example is supposed to show a lot of operations joined together -- it is not actually very useful, nor the most efficient way to code up this problem. There's `im_lintra_vec()` which does exactly this much more quickly.

Figure 3.1: `apply_factors` function in C

Figure 3.2: `apply_factors` function in C++