Cordic

01282014, 04:11 PM
Post: #1




Cordic
Does anybdoy knows if the Prime still relies on Cordic or uses a math coprocessor (which itself may as well rely on cordic...)?


01282014, 04:23 PM
Post: #2




RE: Cordic
The numeric math library is essentially the same BCD math library from the 48 series. So yes.
The CAS however uses binary and I don't know exactly what Bernard does there. TW Although I work for the HP calculator group, the views and opinions I post here are my own. 

01282014, 05:39 PM
Post: #3




RE: Cordic
The ancient ARM9 processor series doesn't have floatingpoint acceleration like, say, the CortexA series does.


01282014, 05:41 PM
Post: #4




RE: Cordic
Floating point arithmetic in the CAS is using the double format representation (truncated to 48 bits mantissa) and the standard libm/libstdc++ functions (except for a few special functions).


01282014, 08:43 PM
Post: #5




RE: Cordic
Thank you all for quick and detailed answers!


01292014, 06:36 AM
Post: #6




RE: Cordic
Hello
(01282014 05:39 PM)debrouxl Wrote: The ancient ARM9 processor series doesn't have floatingpoint acceleration like, say, the CortexA series does. Incorrect, some ARM9 do, and some CortexA do not... but in our case, we do not... However, the ARM FPU does not integrate sin/cos anyway... so the conversation is moot :) ARM FPU only have +, , *, / and sqrt... Cyrille 

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