[Mratc-developers] Compute time for Vincenty equations

[Michael R. <ht...@us...>]

I coded Inverse Vincenty equations in both C and Perl to
compare.  Our system is going to be spending a lot of time on
these equations, so we probably want to optimize around them.

The C version could do 35328 Inverse Vincentys per second.  Perl
could do 5091 Inverse Vincentys per second.  Going by that, C is
seven times faster than Perl in Inverse Vincentys--a performance
improvement worth taking advantage of.  Perl was more
cooperative than C during coding.  However, to realize the
performance improvements, it is worth taking a little beating
during coding.

Let me try and attach the C and Perl source files, see if they
go through.

--Mike