I found a Sunrise/Sunset algorithm here:
http://williams.best.vwh.net/sunrise_sunset_algorithm.htm
which gives step by step English explanation of what it is doing.
It uses sin, cos, tan, asin, acos & atan functions.
I have generated all the tables with a program and saved them as c arrays
in an effort to implement the needed trig function using lookup tables since
the platform I'm using doesn't have a maths lib.
Just to clarify...
sin, cos & atan should range from 0-360,
asin, acos & tan from 0 to 1.
Is that right?
http://williams.best.vwh.net/sunrise_sunset_algorithm.htm
which gives step by step English explanation of what it is doing.
It uses sin, cos, tan, asin, acos & atan functions.
I have generated all the tables with a program and saved them as c arrays
in an effort to implement the needed trig function using lookup tables since
the platform I'm using doesn't have a maths lib.
Just to clarify...
sin, cos & atan should range from 0-360,
asin, acos & tan from 0 to 1.
Is that right?