Exemplos de roundl em C++ (Cpp)

Exemplo n.º 1

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Arquivo: fibprod.c Projeto: dendres/c-play

ull* productFib(ull prod) {

        ull *out = malloc(3 * sizeof(ull*));
        ull isfib = 1;
        long double golden = 1.6180339887498948482;
        long double srfive = 2.2360679774997896964;
        long double p = (long double)prod;
        long double n, m, r, t;

        n = roundl(sqrtl(p / golden));
        m = p / n;
        r = fmodl(p, n);

        if (r > 0) {
                isfib = 0;
                t = floorl(logl(n * srfive) / logl(golden)) + 1;
                n = roundl(powl(golden, t) / srfive);
                m = roundl(powl(golden, t + 1) / srfive);
        }

        out[0] = (ull)n;
        out[1] = (ull)m;
        out[2] = isfib;
        return out;
}

Exemplo n.º 2

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Arquivo: vtkInteractorStyleGame.cpp Projeto: paulmelis/vtk-wrapping-example

//----------------------------------------------------------------------------
void vtkInteractorStyleGame::OnMouseMove()
{
  if(this->CurrentRenderer == NULL){
    return;
  }

  vtkRenderWindowInteractor *rwi = this->Interactor;
  vtkXOpenGLRenderWindow *rw = static_cast<vtkXOpenGLRenderWindow *>(rwi->GetRenderWindow());
  int *size = rw->GetSize();
  int *eventPos = rwi->GetEventPosition();

  Window Win = rw->GetWindowId();
  Display* Disp = rw->GetDisplayId();

  if(eventPos[0] < size[0] && eventPos[1] < size[1]){
    mousedt.x += rwi->GetEventPosition()[0] - roundl(size[0]/2);
    mousedt.y += (rwi->GetEventPosition()[1] +1) - roundl(size[1]/2);
  }
  else{
    mousedt.x = 0;
    mousedt.y = 0;
  }

  // Warp mouse to center of screen to grap the mouse
  XWarpPointer(Disp, Win, Win, 0,0,size[0],size[1], roundl(size[0]/2), roundl(size[1]/2));
}

Exemplo n.º 3

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void shoes_plot_draw_scatter_pts(cairo_t *cr, shoes_plot *plot)
{
  // first series (x) controls graphical settings. 
  if (plot->seriescnt !=  2)
    return; // we don't have just two series 
  int i;
  int top,left,bottom,right;
  left = plot->graph_x; top = plot->graph_y;
  right = plot->graph_w; bottom = plot->graph_h; 
  int height = bottom - top;
  int width = right - left; 
  VALUE rbxser, rbyser;
  shoes_chart_series *serx, *sery;
  rbxser = rb_ary_entry(plot->series, 0);
  Data_Get_Struct(rbxser, shoes_chart_series, serx);
  rbyser = rb_ary_entry(plot->series, 1);
  Data_Get_Struct(rbyser, shoes_chart_series, sery);
 
  double xmax = NUM2DBL(serx->maxv);
  double ymax = NUM2DBL(sery->maxv);
  double xmin = NUM2DBL(serx->minv);
  double ymin = NUM2DBL(sery->minv);
  int nubs = NUM2INT(serx->point_type);
  VALUE shcolor = serx->color;
  VALUE rbstroke = serx->strokes;
  int strokew = NUM2INT(rbstroke);
  if (strokew < 1) strokew = 1;
  shoes_color *color;
  Data_Get_Struct(shcolor, shoes_color, color);

  int obvs = RARRAY_LEN(serx->values);
  for (i = 0; i < obvs; i++) {
    double xval, yval;
    xval = NUM2DBL(rb_ary_entry(serx->values, i));
    yval = NUM2DBL(rb_ary_entry(sery->values, i));
    //printf("scatter x: %f, y: %f\n", xval, yval);
  }
  
  double yScale = height / (ymax - ymin);
  double xScale = width / (xmax - xmin);
  cairo_set_source_rgba(cr, color->r / 255.0, color->g / 255.0,
      color->b / 255.0, color->a / 255.0); 
  for (i = 0; i < obvs; i++) {
    VALUE rbx = rb_ary_entry(serx->values, i);
    double xval = NUM2DBL(rbx);
    VALUE rby = rb_ary_entry(sery->values, i);
    double yval = NUM2DBL(rby);
    long x = roundl((xval - xmin) * xScale);
    long y = height - roundl((yval - ymin) * yScale);
    x += left;
    y += top;
    //printf("x: %f, y: %f --> x: %i px, y: %i, px\n", xval, yval, x, y);
    // lets draw a nub at x, y
    cairo_move_to(cr, x, y);
    shoes_plot_draw_nub(cr, plot, x, y, nubs, strokew + 2);
  }
  cairo_stroke(cr); 
  shoes_plot_set_cairo_default(cr, plot);
}

Exemplo n.º 4

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