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-@node Constants
-@chapter Constants
-
-@file{<libred.h>} defines a number of symbolic constants
-suitable for using a @code{#if} preprocessing directives.
-
-@table @code
-@item LIBRED_SOLAR_APPARENT_RADIUS
-The approximate apparent size of the Sun in degrees.
-This value should be about 0.5(3).
-
-@item LIBRED_SOLAR_ELEVATION_SUNSET_SUNRISE
-The Sun's elevation at sunset and sunrise, measured in
-degrees. This value will always be 0.0.
-
-@item LIBRED_SOLAR_ELEVATION_CIVIL_DUSK_DAWN
-The Sun's elevation at civil dusk and civil dawn, measured
-in degrees. This value will always be @math{-6.0}.
-
-@item LIBRED_SOLAR_ELEVATION_NAUTICAL_DUSK_DAWN
-The Sun's elevation at nautical dusk and nautical dawn,
-measured in degrees. This value will always be @math{-12.0}.
-
-@item LIBRED_SOLAR_ELEVATION_ASTRONOMICAL_DUSK_DAWN
-The Sun's elevation at astronomical dusk and astronomical
-dawn, measured in degrees. This value will always be @math{-18.0}.
-
-@item LIBRED_HIGHEST_TEMPERATURE
-The highest temperature, in kelvins, for which there is a
-colour temperature in the table of colour temperature. Any
-temperature above this is automatically truncated by
-@code{libred_get_colour}, as higher values shall be
-unnoticeable. Currently, this value is 40@tie{}000.
-
-@item LIBRED_LOWEST_TEMPERATURE
-The lowest temperature, in kelvins, for which there is a
-colour temperature in the table of colour temperature. Any
-temperature below this results in @code{libred_get_colour}
-failing and setting @code{errno} to @code{EDOM}. Currently
-this value 1000, hypothetical changes will be very small.
-
-@item LIBRED_DELTA_TEMPERATURE
-The temperatures differences between sequential colour
-temperatures in the colour temperatures look up table.
-Currently this value is 100.
-@end table
-