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C++ bilən var?


AliZairov

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Salam. Azan proqramı yığıram. Proqramın vaxt hesablamasını tapa bilmirəm. Sadəcə əlimdə PrayTimes.org saytından yüklədiyim C++ üçün olan kodlama var. Saytda əgər C++ normal bilən varsa Allah rızası üçün mənə kömək etsin. C++ kodlarını Delphi üçün uyğunlaşdırsın.

 

prayertimes.cpp faylı

 

#include <ctime>

#include <cmath>

#include <cstring>

#include <unistd.h>

#include <getopt.h>

 

#include "prayertimes.hpp"

 

#define PROG_NAME "prayertimes"

#define PROG_NAME_FRIENDLY "PrayerTimes"

#define PROG_VERSION "0.3"

 

static const char* TimeName[] =

{

"Fajr",

"Sunrise",

"Dhuhr",

"Asr",

"Sunset",

"Maghrib",

"Isha",

};

 

void print_help(FILE* f)

{

fputs(PROG_NAME_FRIENDLY " " PROG_VERSION "\\n\\n", stderr);

fputs("Usage: " PROG_NAME " options...\\n"

"\\n"

" Options\\n"

" --help -h you're reading it\\n"

" --version -v prints name and version, then exits\\n"

" --date arg -d get prayer times for arbitrary date\\n"

" --timezone arg -z get prayer times for arbitrary timezone\\n"

" * --latitude arg -l latitude of desired location\\n"

" * --longitude arg -n longitude of desired location\\n"

" --calc-method arg -c select prayer time calculation method\\n"

" --asr-juristic-method arg -a select Juristic method for calculating Asr prayer time\\n"

" --high-lats-method arg -i select adjusting method for higher latitude\\n"

" --dhuhr-minutes arg minutes after mid-way for calculating Dhuhr prayer time\\n"

" ** --maghrib-minutes arg minutes after sunset for calculating Maghrib prayer time\\n"

" ** --isha-minutes arg minutes after Maghrib for calculating Isha prayer time\\n"

" ** --fajr-angle arg angle for calculating Fajr prayer time\\n"

" ** --maghrib-angle arg angle for calculating Maghrib prayer time\\n"

" ** --isha-angle arg angle for calculating Isha prayer time\\n"

"\\n"

" * These options are required\\n"

" ** By providing any of these options the calculation method is set to custom\\n"

"\\n"

" Possible arguments for --calc-method\\n"

" jafari Ithna Ashari\\n"

" karachi University of Islamic Sciences, Karachi\\n"

" isna Islamic Society of North America (ISNA)\\n"

" mwl Muslim World League (MWL)\\n"

" makkah Umm al-Qura, Makkah\\n"

" egypt Egyptian General Authority of Survey\\n"

" custom Custom Setting\\n"

"\\n"

" Possible arguments for --asr-juristic-method\\n"

" shafii Shafii (standard)\\n"

" hanafi Hanafi\\n"

"\\n"

" Possible arguments for --high-lats-method\\n"

" none No adjustment\\n"

" midnight middle of night\\n"

" oneseventh 1/7th of night\\n"

" anglebased angle/60th of night\\n"

, stderr);

 

}

 

int main(int argc, char* argv[])

{

PrayerTimes prayer_times;

double latitude = NAN; // 35.7061

double longitude = NAN; // 51.4358

time_t date = time(NULL);

double timezone = NAN;

 

// Parse options

for (;;)

{

static option long_options[] =

{

{ "help", no_argument, NULL, 'h' },

{ "version", no_argument, NULL, 'v' },

{ "date", required_argument, NULL, 'd' },

{ "timezone", required_argument, NULL, 'z' },

{ "latitude", required_argument, NULL, 'l' },

{ "longitude", required_argument, NULL, 'n' },

{ "calc-method", required_argument, NULL, 'c' },

{ "asr-juristic-method", required_argument, NULL, 'a' },

{ "high-lats-method", required_argument, NULL, 'i' },

{ "dhuhr-minutes", required_argument, NULL, 0 },

{ "maghrib-minutes", required_argument, NULL, 0 },

{ "isha-minutes", required_argument, NULL, 0 },

{ "fajr-angle", required_argument, NULL, 0 },

{ "maghrib-angle", required_argument, NULL, 0 },

{ "isha-angle", required_argument, NULL, 0 },

{ 0, 0, 0, 0 }

};

 

enum // long options missing a short form

{

DHUHR_MINUTES = 9,

MAGHRIB_MINUTES,

ISHA_MINUTES,

FAJR_ANGLE,

MAGHRIB_ANGLE,

ISHA_ANGLE,

};

 

int option_index = 0;

int c = getopt_long(argc, argv, "hvd:z:l:n:c:a:i:", long_options, &option_index);

 

if (c == -1)

break; // Last option

 

if (!optarg && c != 'h' && c != 'v')

{

fprintf(stderr, "Error: %s option requires an argument\\n", long_options[option_index].name);

return 2;

}

 

switch ©

{

case 0:

double arg;

if (sscanf(optarg, "%lf", &arg) != 1)

{

fprintf(stderr, "Error: Invalid number '%s'\\n", optarg);

return 2;

}

switch (option_index)

{

case DHUHR_MINUTES:

prayer_times.set_dhuhr_minutes(arg);

break;

case MAGHRIB_MINUTES:

prayer_times.set_maghrib_minutes(arg);

break;

case ISHA_MINUTES:

prayer_times.set_isha_minutes(arg);

break;

case FAJR_ANGLE:

prayer_times.set_fajr_angle(arg);

break;

case MAGHRIB_ANGLE:

prayer_times.set_maghrib_angle(arg);

break;

case ISHA_ANGLE:

prayer_times.set_isha_angle(arg);

break;

default:

fprintf(stderr, "Error: Invalid command line option\\n");

return 2;

}

break;

case 'h': // --help

print_help(stdout);

return 0;

case 'v': // --version

puts(PROG_NAME_FRIENDLY " " PROG_VERSION);

return 0;

case 'd': // --date

{

tm* new_date = getdate(optarg);

if (!new_date)

{

fprintf(stderr, "Error: Failed to parse '%s' as date (%m)\\n", optarg);

return 2;

}

date = mktime(new_date);

break;

}

case 'z': // --timezone

if (sscanf(optarg, "%lf", &timezone) != 1)

{

fprintf(stderr, "Error: Invalid timezone '%s'\\n", optarg);

return 2;

}

break;

case 'l': // --latitude

if (sscanf(optarg, "%lf", &latitude) != 1)

{

fprintf(stderr, "Error: Invalid latitude '%s'\\n", optarg);

return 2;

}

break;

case 'n': // --longitude

if (sscanf(optarg, "%lf", &longitude) != 1)

{

fprintf(stderr, "Error: Invalid longitude '%s'\\n", optarg);

return 2;

}

break;

case 'c': // --calc-method

if (strcmp(optarg, "jafari") == 0)

prayer_times.set_calc_method(PrayerTimes::Jafari);

else if (strcmp(optarg, "karachi") == 0)

prayer_times.set_calc_method(PrayerTimes::Karachi);

else if (strcmp(optarg, "isna") == 0)

prayer_times.set_calc_method(PrayerTimes::ISNA);

else if (strcmp(optarg, "mwl") == 0)

prayer_times.set_calc_method(PrayerTimes::MWL);

else if (strcmp(optarg, "makkah") == 0)

prayer_times.set_calc_method(PrayerTimes::Makkah);

else if (strcmp(optarg, "egypt") == 0)

prayer_times.set_calc_method(PrayerTimes::Egypt);

else if (strcmp(optarg, "custom") == 0)

prayer_times.set_calc_method(PrayerTimes::Custom);

else

{

fprintf(stderr, "Error: Unknown method '%s'\\n", optarg);

return 2;

}

break;

case 'a': // --asr-juristic-method

if (strcmp(optarg, "shafii") == 0)

prayer_times.set_asr_method(PrayerTimes::Shafii);

else if (strcmp(optarg, "hanafi") == 0)

prayer_times.set_asr_method(PrayerTimes::Hanafi);

else

{

fprintf(stderr, "Error: Unknown method '%s'\\n", optarg);

return 2;

}

break;

case 'i': // --high-lats-method

if (strcmp(optarg, "none") == 0)

prayer_times.set_high_lats_adjust_method(PrayerTimes::None);

else if (strcmp(optarg, "midnight") == 0)

prayer_times.set_high_lats_adjust_method(PrayerTimes::MidNight);

else if (strcmp(optarg, "oneseventh") == 0)

prayer_times.set_high_lats_adjust_method(PrayerTimes::OneSeventh);

else if (strcmp(optarg, "anglebased") == 0)

prayer_times.set_high_lats_adjust_method(PrayerTimes::AngleBased);

else

{

fprintf(stderr, "Error: Unknown method '%s'\\n", optarg);

return 2;

}

break;

default:

fprintf(stderr, "Error: Unknown option '%c'\\n", c);

print_help(stderr);

return 2;

}

}

 

if (isnan(latitude) || isnan(longitude))

{

fprintf(stderr, "Error: You must provide both latitude and longitude\\n");

return 2;

}

 

fputs(PROG_NAME_FRIENDLY " " PROG_VERSION "\\n\\n", stderr);

 

if (isnan(timezone))

timezone = PrayerTimes::get_effective_timezone(date);

 

double times[PrayerTimes::TimesCount];

fprintf(stderr, "date : %s", ctime(&date));

fprintf(stderr, "timezone : %.1lf\\n", timezone);

fprintf(stderr, "latitude : %.5lf\\n", latitude);

fprintf(stderr, "longitude : %.5lf\\n", longitude);

puts("");

prayer_times.get_prayer_times(date, latitude, longitude, timezone, times);

for (int i = 0; i < PrayerTimes::TimesCount; ++i)

printf("%8s : %s\\n", TimeName, PrayerTimes::float_time_to_time24(times).c_str());

return 0;

}

 

 

prayertimes.hpp faylı

 

#include <cstdio>

#include <cmath>

#include <string>

 

/* -------------------- PrayerTimes Class --------------------- */

 

class PrayerTimes

{

public:

enum

{

VERSION_MAJOR = 1,

VERSION_MINOR = 0,

};

/* --------------------- User Interface ----------------------- */

/*

PrayerTimes(CalculationMethod calc_method = Jafari,

JuristicMethod asr_juristic = Shafii,

AdjustingMethod adjust_high_lats = MidNight,

double dhuhr_minutes = 0)

 

get_prayer_times(date, latitude, longitude, timezone, &times)

get_prayer_times(year, month, day, latitude, longitude, timezone, &times)

 

set_calc_method(method_id)

set_asr_method(method_id)

set_high_lats_adjust_method(method_id) // adjust method for higher latitudes

 

set_fajr_angle(angle)

set_maghrib_angle(angle)

set_isha_angle(angle)

set_dhuhr_minutes(minutes) // minutes after mid-day

set_maghrib_minutes(minutes) // minutes after sunset

set_isha_minutes(minutes) // minutes after maghrib

 

get_float_time_parts(time, &hours, &minutes)

float_time_to_time24(time)

float_time_to_time12(time)

float_time_to_time12ns(time)

*/

 

// Calculation Methods

enum CalculationMethod

{

Jafari, // Ithna Ashari

Karachi, // University of Islamic Sciences, Karachi

ISNA, // Islamic Society of North America (ISNA)

MWL, // Muslim World League (MWL)

Makkah, // Umm al-Qura, Makkah

Egypt, // Egyptian General Authority of Survey

Custom, // Custom Setting

 

CalculationMethodsCount

};

 

// Juristic Methods

enum JuristicMethod

{

Shafii, // Shafii (standard)

Hanafi, // Hanafi

};

 

// Adjusting Methods for Higher Latitudes

enum AdjustingMethod

{

None, // No adjustment

MidNight, // middle of night

OneSeventh, // 1/7th of night

AngleBased, // angle/60th of night

};

 

// Time IDs

enum TimeID

{

Fajr,

Sunrise,

Dhuhr,

Asr,

Sunset,

Maghrib,

Isha,

 

TimesCount

};

 

/* -------------------- Interface Functions -------------------- */

 

PrayerTimes(CalculationMethod calc_method = Jafari,

JuristicMethod asr_juristic = Shafii,

AdjustingMethod adjust_high_lats = MidNight,

double dhuhr_minutes = 0)

: calc_method(calc_method)

, asr_juristic(asr_juristic)

, adjust_high_lats(adjust_high_lats)

, dhuhr_minutes(dhuhr_minutes)

{

method_params[Jafari] = MethodConfig(16.0, false, 4.0, false, 14.0); // Jafari

method_params[Karachi] = MethodConfig(18.0, true, 0.0, false, 18.0); // Karachi

method_params[iSNA] = MethodConfig(15.0, true, 0.0, false, 15.0); // ISNA

method_params[MWL] = MethodConfig(18.0, true, 0.0, false, 17.0); // MWL

method_params[Makkah] = MethodConfig(19.0, true, 0.0, true, 90.0); // Makkah

method_params[Egypt] = MethodConfig(19.5, true, 0.0, false, 17.5); // Egypt

method_params[Custom] = MethodConfig(18.0, true, 0.0, false, 17.0); // Custom

}

 

/* return prayer times for a given date */

void get_prayer_times(int year, int month, int day, double _latitude, double _longitude, double _timezone, double times[])

{

latitude = _latitude;

longitude = _longitude;

timezone = _timezone;

julian_date = get_julian_date(year, month, day) - longitude / (double) (15 * 24);

compute_day_times(times);

}

 

/* return prayer times for a given date */

void get_prayer_times(time_t date, double latitude, double longitude, double timezone, double times[])

{

tm* t = localtime(&date);

get_prayer_times(1900 + t->tm_year, t->tm_mon + 1, t->tm_mday, latitude, longitude, timezone, times);

}

 

/* set the calculation method */

void set_calc_method(CalculationMethod method_id)

{

calc_method = method_id;

}

 

/* set the juristic method for Asr */

void set_asr_method(JuristicMethod method_id)

{

asr_juristic = method_id;

}

 

/* set adjusting method for higher latitudes */

void set_high_lats_adjust_method(AdjustingMethod method_id)

{

adjust_high_lats = method_id;

}

 

/* set the angle for calculating Fajr */

void set_fajr_angle(double angle)

{

method_params[Custom].fajr_angle = angle;

calc_method = Custom;

}

 

/* set the angle for calculating Maghrib */

void set_maghrib_angle(double angle)

{

method_params[Custom].maghrib_is_minutes = false;

method_params[Custom].maghrib_value = angle;

calc_method = Custom;

}

 

/* set the angle for calculating Isha */

void set_isha_angle(double angle)

{

method_params[Custom].isha_is_minutes = false;

method_params[Custom].isha_value = angle;

calc_method = Custom;

}

 

/* set the minutes after mid-day for calculating Dhuhr */

void set_dhuhr_minutes(double minutes)

{

dhuhr_minutes = minutes;

}

 

/* set the minutes after Sunset for calculating Maghrib */

void set_maghrib_minutes(double minutes)

{

method_params[Custom].maghrib_is_minutes = true;

method_params[Custom].maghrib_value = minutes;

calc_method = Custom;

}

 

/* set the minutes after Maghrib for calculating Isha */

void set_isha_minutes(double minutes)

{

method_params[Custom].isha_is_minutes = true;

method_params[Custom].isha_value = minutes;

calc_method = Custom;

}

 

/* get hours and minutes parts of a float time */

static void get_float_time_parts(double time, int& hours, int& minutes)

{

time = fix_hour(time + 0.5 / 60); // add 0.5 minutes to round

hours = floor(time);

minutes = floor((time - hours) * 60);

}

 

/* convert float hours to 24h format */

static std::string float_time_to_time24(double time)

{

if (isnan(time))

return std::string();

int hours, minutes;

get_float_time_parts(time, hours, minutes);

return two_digits_format(hours) + ':' + two_digits_format(minutes);

}

 

/* convert float hours to 12h format */

static std::string float_time_to_time12(double time, bool no_suffix = false)

{

if (isnan(time))

return std::string();

int hours, minutes;

get_float_time_parts(time, hours, minutes);

const char* suffix = hours >= 12 ? " PM" : " AM";

hours = (hours + 12 - 1) % 12 + 1;

return int_to_string(hours) + ':' + two_digits_format(minutes) + (no_suffix ? "" : suffix);

}

 

/* convert float hours to 12h format with no suffix */

static std::string float_time_to_time12ns(double time)

{

return float_time_to_time12(time, true);

}

 

/* ---------------------- Time-Zone Functions ----------------------- */

 

/* compute local time-zone for a specific date */

static double get_effective_timezone(time_t local_time)

{

tm* tmp = localtime(&local_time);

tmp->tm_isdst = 0;

time_t local = mktime(tmp);

tmp = gmtime(&local_time);

tmp->tm_isdst = 0;

time_t gmt = mktime(tmp);

return (local - gmt) / 3600.0;

}

 

/* compute local time-zone for a specific date */

static double get_effective_timezone(int year, int month, int day)

{

tm date = { 0 };

date.tm_year = year - 1900;

date.tm_mon = month - 1;

date.tm_mday = day;

date.tm_isdst = -1; // determine it yourself from system

time_t local = mktime(&date); // seconds since midnight Jan 1, 1970

return get_effective_timezone(local);

}

 

private:

/* ------------------- Calc Method Parameters -------------------- */

 

struct MethodConfig

{

MethodConfig()

{

}

 

MethodConfig(double fajr_angle,

bool maghrib_is_minutes,

double maghrib_value,

bool isha_is_minutes,

double isha_value)

: fajr_angle(fajr_angle)

, maghrib_is_minutes(maghrib_is_minutes)

, maghrib_value(maghrib_value)

, isha_is_minutes(isha_is_minutes)

, isha_value(isha_value)

{

}

 

double fajr_angle;

bool maghrib_is_minutes;

double maghrib_value; // angle or minutes

bool isha_is_minutes;

double isha_value; // angle or minutes

};

 

/* ---------------------- Calculation Functions ----------------------- */

 

/* References: */

/* http://www.ummah.net/astronomy/saltime */

/* http://aa.usno.navy.mil/faq/docs/SunApprox.html */

 

typedef std::pair<double, double> DoublePair;

 

/* compute declination angle of sun and equation of time */

DoublePair sun_position(double jd)

{

double d = jd - 2451545.0;

double g = fix_angle(357.529 + 0.98560028 * d);

double q = fix_angle(280.459 + 0.98564736 * d);

double l = fix_angle(q + 1.915 * dsin(g) + 0.020 * dsin(2 * g));

 

// double r = 1.00014 - 0.01671 * dcos(g) - 0.00014 * dcos(2 * g);

double e = 23.439 - 0.00000036 * d;

 

double dd = darcsin(dsin(e) * dsin(l));

double ra = darctan2(dcos(e) * dsin(l), dcos(l)) / 15.0;

ra = fix_hour(ra);

double eq_t = q / 15.0 - ra;

 

return DoublePair(dd, eq_t);

}

 

/* compute equation of time */

double equation_of_time(double jd)

{

return sun_position(jd).second;

}

 

/* compute declination angle of sun */

double sun_declination(double jd)

{

return sun_position(jd).first;

}

 

/* compute mid-day (Dhuhr, Zawal) time */

double compute_mid_day(double _t)

{

double t = equation_of_time(julian_date + _t);

double z = fix_hour(12 - t);

return z;

}

 

/* compute time for a given angle G */

double compute_time(double g, double t)

{

double d = sun_declination(julian_date + t);

double z = compute_mid_day(t);

double v = 1.0 / 15.0 * darccos((-dsin(g) - dsin(d) * dsin(latitude)) / (dcos(d) * dcos(latitude)));

return z + (g > 90.0 ? - v : v);

}

 

/* compute the time of Asr */

double compute_asr(int step, double t) // Shafii: step=1, Hanafi: step=2

{

double d = sun_declination(julian_date + t);

double g = -darccot(step + dtan(fabs(latitude - d)));

return compute_time(g, t);

}

 

/* ---------------------- Compute Prayer Times ----------------------- */

 

// array parameters must be at least of size TimesCount

 

/* compute prayer times at given julian date */

void compute_times(double times[])

{

day_portion(times);

 

times[Fajr] = compute_time(180.0 - method_params[calc_method].fajr_angle, times[Fajr]);

times[sunrise] = compute_time(180.0 - 0.833, times[sunrise]);

times[Dhuhr] = compute_mid_day(times[Dhuhr]);

times[Asr] = compute_asr(1 + asr_juristic, times[Asr]);

times[sunset] = compute_time(0.833, times[sunset]);

times[Maghrib] = compute_time(method_params[calc_method].maghrib_value, times[Maghrib]);

times[isha] = compute_time(method_params[calc_method].isha_value, times[isha]);

}

 

 

/* compute prayer times at given julian date */

void compute_day_times(double times[])

{

double default_times[] = { 5, 6, 12, 13, 18, 18, 18 }; // default times

for (int i = 0; i < TimesCount; ++i)

times = default_times;

 

for (int i = 0; i < NUM_ITERATIONS; ++i)

compute_times(times);

 

adjust_times(times);

}

 

 

/* adjust times in a prayer time array */

void adjust_times(double times[])

{

for (int i = 0; i < TimesCount; ++i)

times += timezone - longitude / 15.0;

times[Dhuhr] += dhuhr_minutes / 60.0; // Dhuhr

if (method_params[calc_method].maghrib_is_minutes) // Maghrib

times[Maghrib] = times[sunset] + method_params[calc_method].maghrib_value / 60.0;

if (method_params[calc_method].isha_is_minutes) // Isha

times[isha] = times[Maghrib] + method_params[calc_method].isha_value / 60.0;

 

if (adjust_high_lats != None)

adjust_high_lat_times(times);

}

 

/* adjust Fajr, Isha and Maghrib for locations in higher latitudes */

void adjust_high_lat_times(double times[])

{

double night_time = time_diff(times[sunset], times[sunrise]); // sunset to sunrise

 

// Adjust Fajr

double fajr_diff = night_portion(method_params[calc_method].fajr_angle) * night_time;

if (isnan(times[Fajr]) || time_diff(times[Fajr], times[sunrise]) > fajr_diff)

times[Fajr] = times[sunrise] - fajr_diff;

 

// Adjust Isha

double isha_angle = method_params[calc_method].isha_is_minutes ? 18.0 : method_params[calc_method].isha_value;

double isha_diff = night_portion(isha_angle) * night_time;

if (isnan(times[isha]) || time_diff(times[sunset], times[isha]) > isha_diff)

times[isha] = times[sunset] + isha_diff;

 

// Adjust Maghrib

double maghrib_angle = method_params[calc_method].maghrib_is_minutes ? 4.0 : method_params[calc_method].maghrib_value;

double maghrib_diff = night_portion(maghrib_angle) * night_time;

if (isnan(times[Maghrib]) || time_diff(times[sunset], times[Maghrib]) > maghrib_diff)

times[Maghrib] = times[sunset] + maghrib_diff;

}

 

 

/* the night portion used for adjusting times in higher latitudes */

double night_portion(double angle)

{

switch (adjust_high_lats)

{

case AngleBased:

return angle / 60.0;

case MidNight:

return 1.0 / 2.0;

case OneSeventh:

return 1.0 / 7.0;

default:

// Just to return something!

// In original library nothing was returned

// Maybe I should throw an exception

// It must be impossible to reach here

return 0;

}

}

 

/* convert hours to day portions */

void day_portion(double times[])

{

for (int i = 0; i < TimesCount; ++i)

times /= 24.0;

}

 

/* ---------------------- Misc Functions ----------------------- */

 

/* compute the difference between two times */

static double time_diff(double time1, double time2)

{

return fix_hour(time2 - time1);

}

 

static std::string int_to_string(int num)

{

char tmp[16];

tmp[0] = '\\0';

sprintf(tmp, "%d", num);

return std::string(tmp);

}

 

/* add a leading 0 if necessary */

static std::string two_digits_format(int num)

{

char tmp[16];

tmp[0] = '\\0';

sprintf(tmp, "%2.2d", num);

return std::string(tmp);

}

 

/* ---------------------- Julian Date Functions ----------------------- */

 

/* calculate julian date from a calendar date */

double get_julian_date(int year, int month, int day)

{

if (month <= 2)

{

year -= 1;

month += 12;

}

 

double a = floor(year / 100.0);

double b = 2 - a + floor(a / 4.0);

 

return floor(365.25 * (year + 4716)) + floor(30.6001 * (month + 1)) + day + b - 1524.5;

}

 

/* convert a calendar date to julian date (second method) */

double calc_julian_date(int year, int month, int day)

{

double j1970 = 2440588.0;

tm date = { 0 };

date.tm_year = year - 1900;

date.tm_mon = month - 1;

date.tm_mday = day;

date.tm_isdst = -1; // determine it yourself from system

time_t ms = mktime(&date); // seconds since midnight Jan 1, 1970

double days = floor(ms / (double) (60 * 60 * 24));

return j1970 + days - 0.5;

}

 

/* ---------------------- Trigonometric Functions ----------------------- */

 

/* degree sin */

static double dsin(double d)

{

return sin(deg2rad(d));

}

 

/* degree cos */

static double dcos(double d)

{

return cos(deg2rad(d));

}

 

/* degree tan */

static double dtan(double d)

{

return tan(deg2rad(d));

}

 

/* degree arcsin */

static double darcsin(double x)

{

return rad2deg(asin(x));

}

 

/* degree arccos */

static double darccos(double x)

{

return rad2deg(acos(x));

}

 

/* degree arctan */

static double darctan(double x)

{

return rad2deg(atan(x));

}

 

/* degree arctan2 */

static double darctan2(double y, double x)

{

return rad2deg(atan2(y, x));

}

 

/* degree arccot */

static double darccot(double x)

{

return rad2deg(atan(1.0 / x));

}

 

/* degree to radian */

static double deg2rad(double d)

{

return d * M_PI / 180.0;

}

 

/* radian to degree */

static double rad2deg(double r)

{

return r * 180.0 / M_PI;

}

 

/* range reduce angle in degrees. */

static double fix_angle(double a)

{

a = a - 360.0 * floor(a / 360.0);

a = a < 0.0 ? a + 360.0 : a;

return a;

}

 

/* range reduce hours to 0..23 */

static double fix_hour(double a)

{

a = a - 24.0 * floor(a / 24.0);

a = a < 0.0 ? a + 24.0 : a;

return a;

}

 

private:

/* ---------------------- Private Variables -------------------- */

 

MethodConfig method_params[CalculationMethodsCount];

 

CalculationMethod calc_method; // caculation method

JuristicMethod asr_juristic; // Juristic method for Asr

AdjustingMethod adjust_high_lats; // adjusting method for higher latitudes

double dhuhr_minutes; // minutes after mid-day for Dhuhr

 

double latitude;

double longitude;

double timezone;

double julian_date;

 

/* --------------------- Technical Settings -------------------- */

 

static const int NUM_ITERATIONS = 1; // number of iterations needed to compute times

};

 

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