static int cmpBitmap()

in tjunittest.c [893:943]
47 lines of code
23 McCabe index (conditional complexity)

static int cmpBitmap(void *buf, int width, int pitch, int height, int pf,
                     int bottomUp, int gray2rgb)
{
  int roffset = tjRedOffset[pf];
  int goffset = tjGreenOffset[pf];
  int boffset = tjBlueOffset[pf];
  int aoffset = tjAlphaOffset[pf];
  int ps = tjPixelSize[pf];
  int i, j;

  for (j = 0; j < height; j++) {
    int row = bottomUp ? height - j - 1 : j;

    for (i = 0; i < width; i++) {
      int r = (i * (maxSample + 1) / width) % (maxSample + 1);
      int g = (j * (maxSample + 1) / height) % (maxSample + 1);
      int b = (j * (maxSample + 1) / height +
               i * (maxSample + 1) / width) % (maxSample + 1);

      if (pf == TJPF_GRAY) {
        if (getVal(buf, row * pitch + i * ps) != b)
          return 0;
      } else if (pf == TJPF_CMYK) {
        int rf, gf, bf;

        cmyk_to_rgb(getVal(buf, row * pitch + i * ps + 0),
                    getVal(buf, row * pitch + i * ps + 1),
                    getVal(buf, row * pitch + i * ps + 2),
                    getVal(buf, row * pitch + i * ps + 3), &rf, &gf, &bf);
        if (gray2rgb) {
          if (rf != b || gf != b || bf != b)
            return 0;
        } else if (rf != r || gf != g || bf != b) return 0;
      } else {
        if (gray2rgb) {
          if (getVal(buf, row * pitch + i * ps + roffset) != b ||
              getVal(buf, row * pitch + i * ps + goffset) != b ||
              getVal(buf, row * pitch + i * ps + boffset) != b)
            return 0;
        } else if (getVal(buf, row * pitch + i * ps + roffset) != r ||
                   getVal(buf, row * pitch + i * ps + goffset) != g ||
                   getVal(buf, row * pitch + i * ps + boffset) != b)
          return 0;
        if (aoffset >= 0 &&
            getVal(buf, row * pitch + i * ps + aoffset) != maxSample)
          return 0;
      }
    }
  }
  return 1;
}