Remove FXSYS_Div.

xfa/src/fxgraphics/src/fx_graphics.cpp

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #include <memory>
 
 #include "xfa/src/fxgraphics/src/fx_path_generator.h"
 #include "xfa/src/fxgraphics/src/pre.h"
@@ skipping 960 matching lines @@
     case FX_SHADING_Axial: {
       FX_FLOAT x_span = end_x - start_x;
       FX_FLOAT y_span = end_y - start_y;
       FX_FLOAT axis_len_square = (x_span * x_span) + (y_span * y_span);
       for (int32_t row = 0; row < height; row++) {
         FX_DWORD* dib_buf = (FX_DWORD*)(bmp.GetBuffer() + row * pitch);
         for (int32_t column = 0; column < width; column++) {
           FX_FLOAT x = (FX_FLOAT)(column);
           FX_FLOAT y = (FX_FLOAT)(row);
           FX_FLOAT scale =
-              FXSYS_Div(((x - start_x) * x_span) + ((y - start_y) * y_span),
-                        axis_len_square);
+              (((x - start_x) * x_span) + ((y - start_y) * y_span)) /
+              axis_len_square;
           if (scale < 0) {
             if (!_info._fillColor->_shading->_isExtendedBegin) {
               continue;
             }
             scale = 0;
           } else if (scale > 1.0f) {
             if (!_info._fillColor->_shading->_isExtendedEnd) {
               continue;
             }
             scale = 1.0f;
@@ skipping 16 matching lines @@
         for (int32_t column = 0; column < width; column++) {
           FX_FLOAT x = (FX_FLOAT)(column);
           FX_FLOAT y = (FX_FLOAT)(row);
           FX_FLOAT b = -2 * (((x - start_x) * (end_x - start_x)) +
                              ((y - start_y) * (end_y - start_y)) +
                              (start_r * (end_r - start_r)));
           FX_FLOAT c = ((x - start_x) * (x - start_x)) +
                        ((y - start_y) * (y - start_y)) - (start_r * start_r);
           FX_FLOAT s;
           if (a == 0) {
-            s = (FXSYS_Div(-c, b));
+            s = -c / b;
           } else {
             FX_FLOAT b2_4ac = (b * b) - 4 * (a * c);
             if (b2_4ac < 0) {
               continue;
             }
             FX_FLOAT root = (FXSYS_sqrt(b2_4ac));
             FX_FLOAT s1, s2;
             if (a > 0) {
-              s1 = FXSYS_Div(-b - root, 2 * a);
-              s2 = FXSYS_Div(-b + root, 2 * a);
+              s1 = (-b - root) / (2 * a);
+              s2 = (-b + root) / (2 * a);
             } else {
-              s2 = FXSYS_Div(-b - root, 2 * a);
-              s1 = FXSYS_Div(-b + root, 2 * a);
+              s2 = (-b - root) / (2 * a);
+              s1 = (-b + root) / (2 * a);
             }
             if (s2 <= 1.0f || _info._fillColor->_shading->_isExtendedEnd) {
               s = (s2);
             } else {
               s = (s1);
             }
             if ((start_r) + s * (end_r - start_r) < 0) {
               continue;
             }
           }
@@ skipping 406 matching lines @@
     b3 = (int32_t)(i * bScale);
     _argbArray[i] =
         FXARGB_TODIB(FXARGB_MAKE((a1 + a3), (r1 + r3), (g1 + g3), (b1 + b3)));
   }
   return FX_ERR_Succeeded;
 }
 class CFX_Pause : public IFX_Pause {
  public:
   virtual FX_BOOL NeedToPauseNow() { return TRUE; }
 };