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authorKen Martin <ken.martin@kitware.com>2005-11-10 15:50:45 (GMT)
committerKen Martin <ken.martin@kitware.com>2005-11-10 15:50:45 (GMT)
commit699a97a504f0a56858c91399954fb368a37048b7 (patch)
tree3ec027d9963748a453150ebae5bf4d1420a2b676 /Tests/Tutorial
parent814f0a573afba55840b5b3d7cdb4b710a996e100 (diff)
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ENH: step 4
Diffstat (limited to 'Tests/Tutorial')
-rw-r--r--Tests/Tutorial/Step4/CMakeLists.txt66
-rw-r--r--Tests/Tutorial/Step4/MathFunctions/CMakeLists.txt4
-rw-r--r--Tests/Tutorial/Step4/MathFunctions/MathFunctions.h1
-rw-r--r--Tests/Tutorial/Step4/MathFunctions/mysqrt.cxx39
-rw-r--r--Tests/Tutorial/Step4/TutorialConfig.h.in9
-rw-r--r--Tests/Tutorial/Step4/tutorial.cxx33
6 files changed, 152 insertions, 0 deletions
diff --git a/Tests/Tutorial/Step4/CMakeLists.txt b/Tests/Tutorial/Step4/CMakeLists.txt
new file mode 100644
index 0000000..03e4a9b
--- /dev/null
+++ b/Tests/Tutorial/Step4/CMakeLists.txt
@@ -0,0 +1,66 @@
+project (Tutorial)
+
+# The version number.
+set (Tutorial_VERSION_MAJOR 1)
+set (Tutorial_VERSION_MINOR 0)
+
+# does this system provide the log and exp functions?
+include (${CMAKE_ROOT}/Modules/CheckFunctionExists.cmake)
+check_function_exists (log HAVE_LOG)
+check_function_exists (exp HAVE_EXP)
+
+# configure a header file to pass some of the CMake settings
+# to the source code
+configure_file (
+ "${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 ${EXTRA_LIBS})
+
+# add the install targets
+install_targets (/bin Tutorial)
+install_files (/include FILES "${PROJECT_BINARY_DIR}/TutorialConfig.h")
+
+# enable testing
+enable_testing ()
+
+# does the application run
+add_test (TutorialRuns Tutorial 25)
+
+# does the usage message work?
+add_test (TutorialUsage Tutorial)
+set_tests_properties (TutorialUsage
+ PROPERTIES
+ PASS_REGULAR_EXPRESSION "Usage:.*number"
+ )
+
+#define a macro to simplify adding tests
+macro (do_test arg result)
+ add_test (TutorialComp${arg} Tutorial ${arg})
+ set_tests_properties (TutorialComp${arg}
+ PROPERTIES PASS_REGULAR_EXPRESSION ${result}
+ )
+endmacro (do_test)
+
+# do a bunch of result based tests
+do_test (25 "25 is 5")
+do_test (-25 "-25 is 0")
+do_test (0.0001 "0.0001 is 0.01")
+
diff --git a/Tests/Tutorial/Step4/MathFunctions/CMakeLists.txt b/Tests/Tutorial/Step4/MathFunctions/CMakeLists.txt
new file mode 100644
index 0000000..329c204
--- /dev/null
+++ b/Tests/Tutorial/Step4/MathFunctions/CMakeLists.txt
@@ -0,0 +1,4 @@
+add_library(MathFunctions mysqrt.cxx)
+
+install_targets (/bin MathFunctions)
+install_files (/include FILES MathFunctions.h)
diff --git a/Tests/Tutorial/Step4/MathFunctions/MathFunctions.h b/Tests/Tutorial/Step4/MathFunctions/MathFunctions.h
new file mode 100644
index 0000000..cd36bcc
--- /dev/null
+++ b/Tests/Tutorial/Step4/MathFunctions/MathFunctions.h
@@ -0,0 +1 @@
+double mysqrt(double x);
diff --git a/Tests/Tutorial/Step4/MathFunctions/mysqrt.cxx b/Tests/Tutorial/Step4/MathFunctions/mysqrt.cxx
new file mode 100644
index 0000000..0cf7db4
--- /dev/null
+++ b/Tests/Tutorial/Step4/MathFunctions/mysqrt.cxx
@@ -0,0 +1,39 @@
+#include <stdio.h>
+#include "MathFunctions.h"
+#include "TutorialConfig.h"
+
+#include <math.h>
+
+// a hack square root calculation using simple operations
+double mysqrt(double x)
+{
+ if (x <= 0)
+ {
+ return 0;
+ }
+
+ double result;
+
+ // if we have both log and exp then use them
+#if defined(HAVE_LOG) && defined (HAVE_EXP)
+ result = exp(log(x)*0.5);
+ fprintf(stdout,"Computing sqrt of %g to be %g using log\n",x,result);
+#else
+ 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);
+ }
+#endif
+ return result;
+}
diff --git a/Tests/Tutorial/Step4/TutorialConfig.h.in b/Tests/Tutorial/Step4/TutorialConfig.h.in
new file mode 100644
index 0000000..a091265
--- /dev/null
+++ b/Tests/Tutorial/Step4/TutorialConfig.h.in
@@ -0,0 +1,9 @@
+// the configured options and settings for Tutorial
+#define Tutorial_VERSION_MAJOR @Tutorial_VERSION_MAJOR@
+#define Tutorial_VERSION_MINOR @Tutorial_VERSION_MINOR@
+#cmakedefine USE_MYMATH
+
+// does the platform provide exp and log functions?
+#cmakedefine HAVE_LOG
+#cmakedefine HAVE_EXP
+
diff --git a/Tests/Tutorial/Step4/tutorial.cxx b/Tests/Tutorial/Step4/tutorial.cxx
new file mode 100644
index 0000000..e1f9cd8
--- /dev/null
+++ b/Tests/Tutorial/Step4/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;
+}