Compiler (people Retired) API's ;FFT's;FHT's

Hi!

Do you have the drive to do a task to enhance Rexx?

I know there are experts with compilers etc out there in this world.

Many Retired experts from IBM and other companies exist. Maybe you would

like to leave another mark in this world yet.

I need help. I need someone or many people to get involved to build

Fast Fourier Transforms and/or Fast Hartley Transforms to enhance Rexx's

Multiply and Divide.

I am a retired person from the Stanford University environment. I work

with Rexx and have built many functions for Numerics using rexx over the

past 20 years. I have attempted, using an associate, various API's

interfacing Rexx and my Numerics routines with compilers and

assemblers.( Mostly fortran, the Mathematicians language.)

If you are not too familiar with FFT's/FHT's to do the task I can

outline the structures.

As you may know, Rexx's multiply and divide is what is called N

squared. This means if we double numeric digits it takes 2**2=4 times

the actual time. If we increase to say 1e20 digits then rexx will

increase to a factor of 1e40. Typical examples are: At 1e20 digits via

rexx and an FFT/FHT is over 85,000 times faster. This means hours by

rexx becomes sub seconds using the transforms to a multiply at a million

digits. The FFT/FHT works at N*lg(N). N here is 2**n samples of

typically 4 digits/sample.[for 2**20 multiply each numeric is

[(2**18)*18]*2 for 2**18 array samples using dbl precision within

compiler.] the final *2 is because the FFT/FHT requires a ZERO pad the

same size and twice this sine each numeric array must be the same size.

So, if we double digits we will only double time, ( approximately.)

I have constructed an API and code for FHT's and have realized

computation of Numerics to 4 million digits with 256 megabytes of ram

and using os/2. I need someone that is smarter than I. You're just that

person. Can you help? I'm all burned out with compilers etc. and need

help.

interfacing.

I realize that the reward is zero dollars, but the fame is very large.

The true monies,(Specie := real dollars), is nil but your help and

efforts are important to the entire rexx world.

Help if you can. Please contact me via Email.

Russ