astro::sun::geocentric_coord::math Namespace Reference

Namespaces
namespace	detail

Functions
auto	discriminant (const int32_t year, const double lon) -> uint32_t
	Return the count of the roots for the given year and lon.
auto	find_roots (const int32_t year, const double expected_lon) -> std::vector< double >
	Find the roots (i.e. JDEs) for the given year and expected_lon.

Function Documentation

discriminant()

auto astro::sun::geocentric_coord::math::discriminant ( const int32_t year, const double lon )->uint32_t

inlinenodiscard

Return the count of the roots for the given year and lon.

Parameters

year	The Gregorian year, in [1, 32766]; see astro::julian_day::validate_annual_year.
lon	The expected solar longitude, in degrees.

Exceptions

std::invalid_argument

If year leaves [1, 32766].

find_roots()

auto astro::sun::geocentric_coord::math::find_roots ( const int32_t year, const double expected_lon )->std::vector< double >

inlinenodiscard

Find the roots (i.e. JDEs) for the given year and expected_lon.

Parameters

year	The Gregorian year, in [1, 32766]; see astro::julian_day::validate_annual_year.
expected_lon	The expected solar longitude, in degrees.

Returns

The roots (i.e. JDEs). There can be 0, 1 or 2 roots.

Exceptions

std::invalid_argument

If year leaves [1, 32766].