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-.TH LIBRED_SOLAR_ELEVATION 3 LIBRED
-.SH NAME
-libred_solar_elevation \- Calculate the Sun's apparent elevation
-.SH SYNOPSIS
-.nf
-#include <libred.h>
-
-double \fBlibred_solar_elevation\fP(double \fIlatitude\fP, double \fIlongitude\fP);
-.fi
-.PP
-Link with
-.IR -lred .
-.SH DESCRIPTION
-.B libred_solar_elevation
-calculates the Sun's  elevation as apparent from a select geographical position.
-Namely from
-.I latitude
-degrees north of GPS's equator and
-.I longitude
-degrees east of GPS's prime meridian. The function is only explicitly defined for
-values between -90 and +90 for
-.I latitude
-and values between -180 and +180 for and
-.IR longitude .
-Other values may or may not work, no error is thrown if used.
-.SH "RETURN VALUE"
-Upon successful completion, the function sets
-.B errno
-to 0 and returns the Sun's current apparent elevation, measured in
-degrees above the horizon. On failure, the function returns an
-arbitrary value (happens to always be 0.0) and sets
-.B errno
-an a non-zero value.
-.SH ERRORS
-The function may fail for any reason specified for
-.BR clock_gettime (3),
-and set the value of
-.B errno
-to the same values.
-.B errno
-is always set to 0 on success.
-.SH "FUTURE DIRECTIONS"
-None.
-.SH "SEE ALSO"
-.BR libred.h (0),
-.BR libred (7),
-.BR libred_check_timetravel (3),
-.BR libred_init_colour (3)
-.SH LICENSE
-Copyright \(co 2016  Mattias Andrée
-.br
-License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
-.br
-This is free software: you are free to change and redistribute it.
-.br
-There is NO WARRANTY, to the extent permitted by law.
-.PP
-Copying and distribution of this manual, with or without modification,
-are permitted in any medium without royalty provided the copyright
-notice and this notice are preserved.  This file is offered as-is,
-without any warranty.
-.SH BUGS
-Please report bugs to <https://github.com/maandree/libred/issues>
-or to <maandree@member.fsf.org>.
-