Re: [android-developers] Need some math assistance please

Many thanks for your reply, but as this is not an iOS list........
I've been having trouble deciding on what type of variable should be
used when converting the formulea from javascript to android java, and
I could really use some pointers.

On 4 September 2011 02:08, lbendlin <lutz@bendlin.us> wrote:
> in iOS the manual function is faster than the built-in one, but on Android
> the difference is negligible.  here's the Objective-C version
>
> //spherical distance in meters
> - (CGFloat) sphericalDistanceFromLat1:(CGFloat)lat1 Lon1:(CGFloat)lon1
> toLat2:(CGFloat)lat2 Lon2:(CGFloat)lon2 {
>     return acos(sin(lat1 * 0.0174533) * sin(lat2 * 0.0174533) + cos(lat1 *
> 0.0174533) * cos(lat2 * 0.0174533) * cos((lon2-lon1) * 0.0174533)) *
> 6371000;
> }
>
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