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authorKen Martin <ken.martin@kitware.com>2005-11-09 21:21:05 (GMT)
committerKen Martin <ken.martin@kitware.com>2005-11-09 21:21:05 (GMT)
commitcf3116872673493859130699e5c42f8ba2775f50 (patch)
treee2c7de433bd755cc7b5833203379e46874bf3322 /Tests/Tutorial/Step2
parent4245eb0b53559f643f044b49ad31121e9c38298b (diff)
downloadCMake-cf3116872673493859130699e5c42f8ba2775f50.zip
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ENH: checkeed in step 1 and 2
Diffstat (limited to 'Tests/Tutorial/Step2')
-rw-r--r--Tests/Tutorial/Step2/CMakeLists.txt30
-rw-r--r--Tests/Tutorial/Step2/MathFunctions/CMakeLists.txt1
-rw-r--r--Tests/Tutorial/Step2/MathFunctions/MathFunctions.h1
-rw-r--r--Tests/Tutorial/Step2/MathFunctions/mysqrt.cxx29
-rw-r--r--Tests/Tutorial/Step2/TutorialConfig.h.in5
-rw-r--r--Tests/Tutorial/Step2/tutorial.cxx33
6 files changed, 99 insertions, 0 deletions
diff --git a/Tests/Tutorial/Step2/CMakeLists.txt b/Tests/Tutorial/Step2/CMakeLists.txt
new file mode 100644
index 0000000..7f12051
--- /dev/null
+++ b/Tests/Tutorial/Step2/CMakeLists.txt
@@ -0,0 +1,30 @@
+project (Tutorial)
+
+# The version number.
+set (Tutorial_VERSION_MAJOR 1)
+set (Tutorial_VERSION_MINOR 0)
+
+# configure a header file to pass some of the CMake settings
+# to the source code
+configure_file (
+ "${PROJECT_SOURCE_DIR}/TutorialConfig.h.in"
+ "${PROJECT_BINARY_DIR}/TutorialConfig.h"
+ )
+
+# should we use our own math functions
+option(USE_MYMATH "Use tutorial provided math implementation" ON)
+
+# add the binary tree to the search path for include files
+# so that we will find TutorialConfig.h
+include_directories ("${PROJECT_BINARY_DIR}")
+
+# add the MathFunctions library?
+if (USE_MYMATH)
+ include_directories ("${PROJECT_SOURCE_DIR}/MathFunctions")
+ add_subdirectory (MathFunctions)
+ set (EXTRA_LIBS ${EXTRA_LIBS} MathFunctions)
+endif (USE_MYMATH)
+
+# add the executable
+add_executable (Tutorial tutorial.cxx)
+target_link_libraries (Tutorial ${EXTRA_LIBS})
diff --git a/Tests/Tutorial/Step2/MathFunctions/CMakeLists.txt b/Tests/Tutorial/Step2/MathFunctions/CMakeLists.txt
new file mode 100644
index 0000000..8b443a6
--- /dev/null
+++ b/Tests/Tutorial/Step2/MathFunctions/CMakeLists.txt
@@ -0,0 +1 @@
+add_library(MathFunctions mysqrt.cxx)
diff --git a/Tests/Tutorial/Step2/MathFunctions/MathFunctions.h b/Tests/Tutorial/Step2/MathFunctions/MathFunctions.h
new file mode 100644
index 0000000..cd36bcc
--- /dev/null
+++ b/Tests/Tutorial/Step2/MathFunctions/MathFunctions.h
@@ -0,0 +1 @@
+double mysqrt(double x);
diff --git a/Tests/Tutorial/Step2/MathFunctions/mysqrt.cxx b/Tests/Tutorial/Step2/MathFunctions/mysqrt.cxx
new file mode 100644
index 0000000..76b8e2d
--- /dev/null
+++ b/Tests/Tutorial/Step2/MathFunctions/mysqrt.cxx
@@ -0,0 +1,29 @@
+#include <stdio.h>
+#include "MathFunctions.h"
+
+// a hack square root calculation using simple operations
+double mysqrt(double x)
+{
+ if (x <= 0)
+ {
+ return 0;
+ }
+
+ double result;
+ double delta;
+ result = x;
+
+ // do ten iterations
+ int i;
+ for (i = 0; i < 10; ++i)
+ {
+ if (result <= 0)
+ {
+ result = 0.1;
+ }
+ delta = x - (result*result);
+ result = result + 0.5*delta/result;
+ fprintf(stdout,"Computing sqrt of %g to be %g\n",x,result);
+ }
+ return result;
+}
diff --git a/Tests/Tutorial/Step2/TutorialConfig.h.in b/Tests/Tutorial/Step2/TutorialConfig.h.in
new file mode 100644
index 0000000..25a0602
--- /dev/null
+++ b/Tests/Tutorial/Step2/TutorialConfig.h.in
@@ -0,0 +1,5 @@
+// the configured options and settings for Tutorial
+#define Tutorial_VERSION_MAJOR @Tutorial_VERSION_MAJOR@
+#define Tutorial_VERSION_MINOR @Tutorial_VERSION_MINOR@
+#cmakedefine USE_MYMATH
+
diff --git a/Tests/Tutorial/Step2/tutorial.cxx b/Tests/Tutorial/Step2/tutorial.cxx
new file mode 100644
index 0000000..e1f9cd8
--- /dev/null
+++ b/Tests/Tutorial/Step2/tutorial.cxx
@@ -0,0 +1,33 @@
+// A simple program that computes the square root of a number
+#include <stdio.h>
+#include <math.h>
+#include "TutorialConfig.h"
+
+#ifdef USE_MYMATH
+#include "MathFunctions.h"
+#endif
+
+int main (int argc, char *argv[])
+{
+ if (argc < 2)
+ {
+ fprintf(stdout,"%s Version %d.%d\n",
+ argv[0],
+ Tutorial_VERSION_MAJOR,
+ Tutorial_VERSION_MINOR);
+ fprintf(stdout,"Usage: %s number\n",argv[0]);
+ return 1;
+ }
+
+ double inputValue = atof(argv[1]);
+
+#ifdef USE_MYMATH
+ double outputValue = mysqrt(inputValue);
+#else
+ double outputValue = sqrt(inputValue);
+#endif
+
+ fprintf(stdout,"The square root of %g is %g\n",
+ inputValue, outputValue);
+ return 0;
+}