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author | Ken Martin <ken.martin@kitware.com> | 2005-11-10 10:51:25 -0500 |
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committer | Ken Martin <ken.martin@kitware.com> | 2005-11-10 10:51:25 -0500 |
commit | 6f5a53618a73b1d0437c7915a8aa0ed2b04d6eda (patch) | |
tree | a2873a3f61c47e99700eb879403faa1581e89cec | |
parent | 699a97a504f0a56858c91399954fb368a37048b7 (diff) | |
download | cmake-6f5a53618a73b1d0437c7915a8aa0ed2b04d6eda.tar.gz |
ENH: step 5
-rw-r--r-- | Tests/Tutorial/Step5/CMakeLists.txt | 70 | ||||
-rw-r--r-- | Tests/Tutorial/Step5/MathFunctions/CMakeLists.txt | 24 | ||||
-rw-r--r-- | Tests/Tutorial/Step5/MathFunctions/MakeTable.cxx | 35 | ||||
-rw-r--r-- | Tests/Tutorial/Step5/MathFunctions/MathFunctions.h | 1 | ||||
-rw-r--r-- | Tests/Tutorial/Step5/MathFunctions/mysqrt.cxx | 44 | ||||
-rw-r--r-- | Tests/Tutorial/Step5/TutorialConfig.h.in | 9 | ||||
-rw-r--r-- | Tests/Tutorial/Step5/tutorial.cxx | 33 |
7 files changed, 216 insertions, 0 deletions
diff --git a/Tests/Tutorial/Step5/CMakeLists.txt b/Tests/Tutorial/Step5/CMakeLists.txt new file mode 100644 index 0000000000..bb7fe995e4 --- /dev/null +++ b/Tests/Tutorial/Step5/CMakeLists.txt @@ -0,0 +1,70 @@ +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 (4 "4 is 2") +do_test (9 "9 is 3") +do_test (5 "5 is 2.236") +do_test (7 "7 is 2.645") +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/Step5/MathFunctions/CMakeLists.txt b/Tests/Tutorial/Step5/MathFunctions/CMakeLists.txt new file mode 100644 index 0000000000..7dc4d8247c --- /dev/null +++ b/Tests/Tutorial/Step5/MathFunctions/CMakeLists.txt @@ -0,0 +1,24 @@ +# first we add the exetuable that generates the table +add_executable(MakeTable MakeTable.cxx) + +# add the command to generate the source code +add_custom_command ( + OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/Table.h + DEPENDS MakeTable + COMMAND MakeTable + ARGS ${CMAKE_CURRENT_BINARY_DIR}/Table.h + ) + +set_source_files_properties ( + mysqrt.cxx PROPERTIES + OBJECT_DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/Table.h + ) + +# add the binary tree directory to the search path for include files +include_directories( ${CMAKE_CURRENT_BINARY_DIR} ) + +# add the main library +add_library(MathFunctions mysqrt.cxx) + +install_targets (/bin MathFunctions) +install_files (/include FILES MathFunctions.h) diff --git a/Tests/Tutorial/Step5/MathFunctions/MakeTable.cxx b/Tests/Tutorial/Step5/MathFunctions/MakeTable.cxx new file mode 100644 index 0000000000..23fa7d4147 --- /dev/null +++ b/Tests/Tutorial/Step5/MathFunctions/MakeTable.cxx @@ -0,0 +1,35 @@ +// A simple program that builds a sqrt table +#include <stdio.h> +#include <math.h> + +int main (int argc, char *argv[]) +{ + int i; + double result; + + // make sure we have enough arguments + if (argc < 2) + { + return 1; + } + + // open the output file + FILE *fout = fopen(argv[1],"w"); + if (!fout) + { + return 1; + } + + // crate a source file with a tabel fo square roots + fprintf(fout,"double sqrtTable[] = {\n"); + for (i = 0; i < 10; ++i) + { + result = sqrt(static_cast<double>(i)); + fprintf(fout,"%g,\n",result); + } + + // close the table with a zero + fprintf(fout,"0};\n"); + fclose(fout); + return 0; +} diff --git a/Tests/Tutorial/Step5/MathFunctions/MathFunctions.h b/Tests/Tutorial/Step5/MathFunctions/MathFunctions.h new file mode 100644 index 0000000000..cd36bccffd --- /dev/null +++ b/Tests/Tutorial/Step5/MathFunctions/MathFunctions.h @@ -0,0 +1 @@ +double mysqrt(double x); diff --git a/Tests/Tutorial/Step5/MathFunctions/mysqrt.cxx b/Tests/Tutorial/Step5/MathFunctions/mysqrt.cxx new file mode 100644 index 0000000000..33659b7408 --- /dev/null +++ b/Tests/Tutorial/Step5/MathFunctions/mysqrt.cxx @@ -0,0 +1,44 @@ +#include <stdio.h> +#include "MathFunctions.h" +#include "TutorialConfig.h" + +// include the generated table +#include "Table.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 + double delta; + + // use the table to help find an initial value + result = x; + if (x >= 1 && x < 10) + { + result = sqrtTable[static_cast<int>(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/Step5/TutorialConfig.h.in b/Tests/Tutorial/Step5/TutorialConfig.h.in new file mode 100644 index 0000000000..a0912656a6 --- /dev/null +++ b/Tests/Tutorial/Step5/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/Step5/tutorial.cxx b/Tests/Tutorial/Step5/tutorial.cxx new file mode 100644 index 0000000000..e1f9cd8408 --- /dev/null +++ b/Tests/Tutorial/Step5/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; +} |