Merge topic 'help-guide-tutorial'

8ab8563533 Help: Add tutorial guide table of contents
0a6c9c417a Help: Update tutorial to include text from CMake book
eef3e020c2 Help: Populate tutorial guide text
862cfc0e6c Help/guide/tutorial: Adopt tutorial code
d2fde94809 Help: Add infrastructure for guide-level documentation
f067af8e38 Tests/Tutorial: Remove trailing blank lines
d5a81ef747 Tests/Tutorial: Remove unused file

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !3439

1 files changed, 18 insertions, 0 deletions

diff --git a/Help/guide/tutorial/MultiPackage/MathFunctions/MathFunctions.cxx b/Help/guide/tutorial/MultiPackage/MathFunctions/MathFunctions.cxx
new file mode 100644
index 0000000..5351184
--- /dev/null
+++ b/Help/guide/tutorial/MultiPackage/MathFunctions/MathFunctions.cxx
@@ -0,0 +1,18 @@
+
+#include "MathFunctions.h"
+#include <cmath>
+
+#ifdef USE_MYMATH
+#  include "mysqrt.h"
+#endif
+
+namespace mathfunctions {
+double sqrt(double x)
+{
+#ifdef USE_MYMATH
+  return detail::mysqrt(x);
+#else
+  return std::sqrt(x);
+#endif
+}
+}