Tutorial: Improve Step 6

* Print message when using the table
* Remove duplicated comment
* Remove HAVE_LOG and HAVE_EXP checks, use generated table instead

2 files changed, 1 insertions, 14 deletions

diff --git a/Help/guide/tutorial/Step11/MathFunctions/CMakeLists.txt b/Help/guide/tutorial/Step11/MathFunctions/CMakeLists.txt
index 55a40d3..df9f4df 100644
--- a/Help/guide/tutorial/Step11/MathFunctions/CMakeLists.txt
+++ b/Help/guide/tutorial/Step11/MathFunctions/CMakeLists.txt
@@ -40,10 +40,6 @@ if(USE_MYMATH)
   target_link_libraries(SqrtLibrary PUBLIC tutorial_compiler_flags)
 
   target_compile_definitions(MathFunctions PRIVATE "USE_MYMATH")
-  if(HAVE_LOG AND HAVE_EXP)
-    target_compile_definitions(SqrtLibrary
-                               PRIVATE "HAVE_LOG" "HAVE_EXP")
-  endif()
   target_link_libraries(MathFunctions PRIVATE SqrtLibrary)
 endif()
 
diff --git a/Help/guide/tutorial/Step11/MathFunctions/mysqrt.cxx b/Help/guide/tutorial/Step11/MathFunctions/mysqrt.cxx
index 436f96d..ff37312 100644
--- a/Help/guide/tutorial/Step11/MathFunctions/mysqrt.cxx
+++ b/Help/guide/tutorial/Step11/MathFunctions/mysqrt.cxx
@@ -4,8 +4,6 @@
 // include the generated table
 #include "Table.h"
 
-#include <cmath>
-
 namespace mathfunctions {
 namespace detail {
 // a hack square root calculation using simple operations
@@ -15,20 +13,13 @@ double mysqrt(double x)
     return 0;
   }
 
-  // if we have both log and exp then use them
-#if defined(HAVE_LOG) && defined(HAVE_EXP)
-  double result = exp(log(x) * 0.5);
-  std::cout << "Computing sqrt of " << x << " to be " << result
-            << " using log and exp" << std::endl;
-#else
   // use the table to help find an initial value
   double result = x;
   if (x >= 1 && x < 10) {
+    std::cout << "Use the table to help find an initial value " << std::endl;
     result = sqrtTable[static_cast<int>(x)];
   }
 
-  // if we have both log and exp then use them
-
   // do ten iterations
   for (int i = 0; i < 10; ++i) {
     if (result <= 0) {