This library converts from year, month, day and hour, minute, second to a decimal year. This library is compatible with Arduino and CMake build systems.
Use the Arduino Library Manager to install this library or clone to your Arduino/libraries folder. Additionally, the Bolder Flight Systems Julian Date library must be installed. This library is added as:
#include "decyear.h"An example Arduino executable is located at examples/arduino/decyear_ex/decyear_ex.ino. Teensy 3.x, 4.x, and LC devices are used for testing under Arduino and this library should be compatible with other Arduino devices.
CMake is used to build this library, which is exported as a library target called decyear. The header is added as:
#include "decyear.h"The library can be also be compiled stand-alone using the CMake idiom of creating a build directory and then, from within that directory issuing:
cmake ..
make
This will build the library, an example executable called decyear_example, and an executable for testing using the Google Test framework, called decyear_test. The example executable source files are located at examples/cmake/decyear_ex.cc.
This library is within the namespace bfs.
double decyear(const int16_t yyyy, const int8_t mm, const int8_t dd, const int8_t h, const int8_t m, const int8_t s) Given the UTC year, month, day, hour, minute, and second, computes and returns the decimal year.
/* Decimal year on 2023-5-30 13:23:10 UTC, 2023.40974727296 */
std::cout << std::setprecision(20) << bfs::decyear(2023, 5, 30, 13, 23, 10) << std::endl;double decyear(const int16_t yyyy, const int8_t mm, const int8_t dd) Given the UTC year, month, and day, computes and returns the decimal year.
/* Decimal year on 2023-5-30 0:0:0 UTC, 2023.40821917808 */
Serial.println(bfs::decyear(2023, 5, 30), 20);