in.js" integrity="sha256-ZX/yNShbjqsohH1k95liqY9Gd8uOiE1S4vZc+9KQ1K4=" crossorigin="anonymous"></script><!-- pkgdown --><link href="../pkgdown.css" rel="stylesheet"><script src="../pkgdown.js"></script><meta property="og:title" content="Create FFT definitions — fftrees_define"><meta property="og:description" content="fftrees_define defines fast-and-frugal trees (FFTs)
either from the definitions provided or by applying algorithms (when no definitions are provided),
and returns a modified FFTrees object th