C++ Examples#
File list#
- CMakeLists.txt
CMake configuration file for building all of the examples below.
- meson.build
Meson configuration file for building all of the examples below.
- example.cpp
The simple 1D complex FFT from the Introduction.
- fft_cc.cpp
Several examples of complex time domain, complex frequency domain FFTs. Also, the use of scratch memory is explored.
- fft_cc_2d.cpp
A complex time, complex frequency 2D FFT that demonstrates strides and passing a Factory to a function. It also uses OpenMP.
- fft_rc.cpp
Several examples of real time domain, complex frequency domain FFTs.
- advanced/CMakeLists.txt
CMake configuration file for building all of the advanced examples below.
- advanced/meson.build
Meson configuration file for building all of the advanced examples below.
- advanced/link-f.py
Python script that creates hard links, removing existing destination files.
- advanced/fft_12.cpp
An example that illustrates disabling dlsym() lookup.
- advanced/fft_3x6.cpp
A 2D complex time, complex frequency FFT that demonstrates dynamically loading FFT libraries at runtime.
- advanced/ncpu.cpp
An example demonstrating run-time detection of cpus, cores, dies, and packages. The resulting binary may itself be of practical utility.
The links above have some further discussion particular to each example. In addition to reading the code and the comments sprinkled throughout, please see the API Design section for an overview.
CMake#
Assuming Hpk has been installed into /opt/libhpk0, the following command
will make the directory mybuild and write Makefile therein:
cmake -B mybuild -S /opt/libhpk0/share/doc/hpk/examples
By default, the CMakeLists.txt in the examples directory looks for the Hpk
package files in the directory /opt/libhpk0/lib/cmake/hpk on x86_64 and
in /opt/libhpk0/lib64/cmake/hpk on aarch64.
If your installation directory differs, specify the directory that contains
HpkConfig.cmake on the command line as follows:
cmake -D Hpk_DIR=/opt/libhpk0/lib/cmake/hpk \
-B mybuild -S /opt/libhpk0/share/doc/hpk/examples
Next, build all the examples:
cmake --build mybuild
Please see Building for additional discussion on preprocessor macros and CMake targets.
Meson#
Assuming Hpk has been installed into /opt/libhpk0, the following command
will make the directory mybuild and write build.ninja therein:
meson setup mybuild /opt/libhpk0/share/doc/hpk/examples
By default, the meson.build from the examples directory looks for the Hpk
pkgconfig files in both /opt/libhpk0/lib/pkgconfig and
/opt/libhpk0/lib64/pkgconfig.
If your installation directory differs, specify the directory that contains
hpk_core.pc, etc. on the command line as follows:
meson setup --pkg-config-path=/opt/libhpk0/lib/pkgconfig \
mybuild /opt/libhpk0/share/doc/hpk/examples
Next, build all the examples:
meson compile -C mybuild
Please see Building for additional discussion on preprocessor macros and Meson dependencies.