| Compiling IDL code with a C compiler [message #40157] |
Sat, 17 July 2004 12:10 |
cedricl
Messages: 8
Registered: July 2004
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Junior Member |
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Hi everyone,
I'm interested in writing an IDL-to-C compiler, for optimization
purposes. To be clear about what I'm talking about, here's what some
sample IDL code would look like:
;#COMPILE gcc -O1
function EvaluateEnergy, field, area
; Type Declarations
;#field = fltarr(101, 101)
;#area = fltarr(101, 101)
;#sum = float(0.)
sum = 0
for x=0, 100 do begin
for y=0, 100 do begin
sum = sum + field[x,y] ^ 2 * area[x, y]
endfor
endfor
return, sum
end
My IDL-to-C (pre)compiler would parse the IDL pro files, looking for
functions preceded by a ;#COMPILE (aka ~preprocessor directive) and
would translate the subsequent IDL code into the equivalent C code,
compiling it with the options specified before. It would then replace
the body of EvaluateEnergy with the proper external function call, and
compile it with IDL's normal .compile compiler.
So before I embark on such an endeavor, I decided to write here to get
some input. Is there anything like that already out there? Is there a
fundamental flaw in my thinking? Any suggestions, advice?
Thank you,
C�dric
(Note: I'm fully aware that the function of my example should be a
one-liner; it's for demonstration purposes, and because I intend to do
a "litteral" IDL-to-C translation at first, and not support IDL's
numerous notational shortcuts)
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