Reproduce Bug from Practical Astronomy - Rust, issue # 6

pa_rust_issue_6.rs

// https://github.com/jfcarr/practical-astronomy-rust/issues/6

use practical_astronomy_rust::moon as M;

struct MoonRiseSetInfo {
    mr_lt_hour: f64,
    mr_lt_min: f64,
    mr_local_date_day: f64,
    mr_local_date_month: u32,
    mr_local_date_year: u32,
    mr_azimuth_deg: f64,
    ms_lt_hour: f64,
    ms_lt_min: f64,
    ms_local_date_day: f64,
    ms_local_date_month: u32,
    ms_local_date_year: u32,
    ms_azimuth_deg: f64,
}

fn get_moon_rise_set_info(
    local_date_day: f64,
    local_date_month: u32,
    local_date_year: u32,
    is_daylight_saving: bool,
    zone_correction_hours: i32,
    geog_longitude_deg: f64,
    geog_latitude_deg: f64,
) -> MoonRiseSetInfo {
    let (
        mr_lt_hour,
        mr_lt_min,
        mr_local_date_day,
        mr_local_date_month,
        mr_local_date_year,
        mr_azimuth_deg,
        ms_lt_hour,
        ms_lt_min,
        ms_local_date_day,
        ms_local_date_month,
        ms_local_date_year,
        ms_azimuth_deg,
    ) = M::moonrise_and_moonset(
        local_date_day,
        local_date_month,
        local_date_year,
        is_daylight_saving,
        zone_correction_hours,
        geog_longitude_deg,
        geog_latitude_deg,
    );

    let return_value = MoonRiseSetInfo {
        mr_lt_hour,
        mr_lt_min,
        mr_local_date_day,
        mr_local_date_month,
        mr_local_date_year,
        mr_azimuth_deg,
        ms_lt_hour,
        ms_lt_min,
        ms_local_date_day,
        ms_local_date_month,
        ms_local_date_year,
        ms_azimuth_deg,
    };

    return return_value;
}

fn main() {
    let local_date_day: f64 = 24.0;
    let local_date_month: u32 = 11;
    let local_date_year: u32 = 2024;
    let is_daylight_saving: bool = false;
    let zone_correction_hours: i32 = 1;
    let geog_longitude_deg: f64 = 9.44041;
    let geog_latitude_deg: f64 = 49.17738;

    let mut result = get_moon_rise_set_info(
        local_date_day,
        local_date_month,
        local_date_year,
        is_daylight_saving,
        zone_correction_hours,
        geog_longitude_deg,
        geog_latitude_deg,
    );

    // Did we actually get the result for the next day, instead of the day we requested?
    if result.mr_local_date_day == local_date_day + 1.0 {
        // If so, get the result again, but for the requested day - 1:
        result = get_moon_rise_set_info(
            local_date_day - 1.0,
            local_date_month,
            local_date_year,
            is_daylight_saving,
            zone_correction_hours,
            geog_longitude_deg,
            geog_latitude_deg,
        );
    }

    println!(
		"Moonrise and Moonset: [Local Date] {}/{}/{} [DST?] {} [Zone Correction] {} hours [Geographical Longitude/Latitude] {} degrees / {} degrees = [Moonrise] [Local Time] {}:{} [Local Date] {}/{}/{} [Azimuth] {} degrees [Moonset] [Local Time] {}:{} [Local Date] {}/{}/{} [Azimuth] {} degrees",
		local_date_month,
		local_date_day,
		local_date_year,
		is_daylight_saving,
		zone_correction_hours,
		geog_longitude_deg,
		geog_latitude_deg,
		result.mr_lt_hour,
		result.mr_lt_min,
		result.mr_local_date_month,
		result.mr_local_date_day,
		result.mr_local_date_year,
		result.mr_azimuth_deg,
		result.ms_lt_hour,
		result.ms_lt_min,
		result.ms_local_date_month,
		result.ms_local_date_day,
		result.ms_local_date_year,
		result.ms_azimuth_deg
	);
}