Remove FXSYS_Div.

core/src/fpdfapi/fpdf_render/fpdf_render_pattern.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 "core/src/fpdfapi/fpdf_render/render_int.h"
 
 #include "core/include/fpdfapi/fpdf_pageobj.h"
 #include "core/include/fpdfapi/fpdf_render.h"
@@ skipping 65 matching lines @@
     rgb_array[i] =
         FXARGB_TODIB(FXARGB_MAKE(alpha, FXSYS_round(R * 255),
                                  FXSYS_round(G * 255), FXSYS_round(B * 255)));
   }
   int pitch = pBitmap->GetPitch();
   for (int row = 0; row < height; row++) {
     FX_DWORD* dib_buf = (FX_DWORD*)(pBitmap->GetBuffer() + row * pitch);
     for (int column = 0; column < width; column++) {
       FX_FLOAT x = (FX_FLOAT)column, y = (FX_FLOAT)row;
       matrix.Transform(x, y);
-      FX_FLOAT scale = FXSYS_Div(
-          ((x - start_x) * x_span) + ((y - start_y) * y_span), axis_len_square);
+      FX_FLOAT scale = (((x - start_x) * x_span) + ((y - start_y) * y_span)) /
+                       axis_len_square;
       int index = (int32_t)(scale * (SHADING_STEPS - 1));
       if (index < 0) {
         if (!bStartExtend) {
           continue;
         }
         index = 0;
       } else if (index >= SHADING_STEPS) {
         if (!bEndExtend) {
           continue;
         }
@@ skipping 84 matching lines @@
     for (int column = 0; column < width; column++) {
       FX_FLOAT x = (FX_FLOAT)column, y = (FX_FLOAT)row;
       matrix.Transform(x, y);
       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 (bDecreasing) {
           if (s1 >= 0 || bStartExtend) {
             s = s1;
           } else {
             s = s2;
           }
         } else {
           if (s2 <= 1.0f || bEndExtend) {
             s = s2;
@@ skipping 821 matching lines @@
     width = 1;
   }
   if (height == 0) {
     height = 1;
   }
   int min_col, max_col, min_row, max_row;
   CFX_Matrix mtDevice2Pattern;
   mtDevice2Pattern.SetReverse(mtPattern2Device);
   CFX_FloatRect clip_box_p(clip_box);
   clip_box_p.Transform(&mtDevice2Pattern);
-  min_col = (int)FXSYS_ceil(
-      FXSYS_Div(clip_box_p.left - pPattern->m_BBox.right, pPattern->m_XStep));
-  max_col = (int)FXSYS_floor(
-      FXSYS_Div(clip_box_p.right - pPattern->m_BBox.left, pPattern->m_XStep));
-  min_row = (int)FXSYS_ceil(
-      FXSYS_Div(clip_box_p.bottom - pPattern->m_BBox.top, pPattern->m_YStep));
-  max_row = (int)FXSYS_floor(
-      FXSYS_Div(clip_box_p.top - pPattern->m_BBox.bottom, pPattern->m_YStep));
+
+  min_col = (int)FXSYS_ceil((clip_box_p.left - pPattern->m_BBox.right) /
+                            pPattern->m_XStep);
+  max_col = (int)FXSYS_floor((clip_box_p.right - pPattern->m_BBox.left) /
+                             pPattern->m_XStep);
+  min_row = (int)FXSYS_ceil((clip_box_p.bottom - pPattern->m_BBox.top) /
+                            pPattern->m_YStep);
+  max_row = (int)FXSYS_floor((clip_box_p.top - pPattern->m_BBox.bottom) /
+                             pPattern->m_YStep);
+
   if (width > clip_box.Width() || height > clip_box.Height() ||
       width * height > clip_box.Width() * clip_box.Height()) {
     CPDF_GraphicStates* pStates = NULL;
     if (!pPattern->m_bColored) {
       pStates = CloneObjStates(pPageObj, bStroke);
     }
     CPDF_Dictionary* pFormResource = NULL;
     if (pPattern->m_pForm->m_pFormDict) {
       pFormResource = pPattern->m_pForm->m_pFormDict->GetDictBy("Resources");
     }
@@ skipping 139 matching lines @@
     }
   }
   if (bStroke) {
     CPDF_Color& StrokeColor = *pPathObj->m_ColorState.GetStrokeColor();
     if (StrokeColor.m_pCS && StrokeColor.m_pCS->GetFamily() == PDFCS_PATTERN) {
       DrawPathWithPattern(pPathObj, pObj2Device, &StrokeColor, TRUE);
       bStroke = FALSE;
     }
   }
 }