void GfxCalRGBColorSpace::getRGB(GfxColor *color, GfxRGB *rgb) {
  double X, Y, Z;
  double r, g, b;

  getXYZ(color,&X,&Y,&Z);
#ifdef USE_CMS
  if (XYZ2DisplayTransform != NULL && displayPixelType == PT_RGB) {
    Guchar out[gfxColorMaxComps];
    double in[gfxColorMaxComps];
    
    in[0] = clip01(X/whiteX);
    in[1] = clip01(Y/whiteY);
    in[2] = clip01(Z/whiteZ);
    XYZ2DisplayTransform->doTransform(in,out,1);
    rgb->r = byteToCol(out[0]);
    rgb->g = byteToCol(out[1]);
    rgb->b = byteToCol(out[2]);
    return;
  }
#endif
  r = xyzrgb[0][0] * X + xyzrgb[0][1] * Y + xyzrgb[0][2] * Z;
  g = xyzrgb[1][0] * X + xyzrgb[1][1] * Y + xyzrgb[1][2] * Z;
  b = xyzrgb[2][0] * X + xyzrgb[2][1] * Y + xyzrgb[2][2] * Z;
  rgb->r = dblToCol(pow(clip01(r), 0.5));
  rgb->g = dblToCol(pow(clip01(g), 0.5));
  rgb->b = dblToCol(pow(clip01(b), 0.5));
}

This weakness involves numeric computation errors, such as integer overflows, underflows, or precision losses, which can lead to miscalculations and exploitable behaviors in software.