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+-- Forum: HP Calculators (and very old HP Computers) (/forum-3.html)
+--- Forum: HP Prime (/forum-5.html)
+--- Thread: Cordic (/thread-559.html)
Cordic - Tugdual - 01-28-2014 04:11 PM
Does anybdoy knows if the Prime still relies on Cordic or uses a math coprocessor (which itself may as well rely on cordic...)?
RE: Cordic - Tim Wessman - 01-28-2014 04:23 PM
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.
RE: Cordic - debrouxl - 01-28-2014 05:39 PM
The ancient ARM9 processor series doesn't have floating-point acceleration like, say, the Cortex-A series does.
RE: Cordic - parisse - 01-28-2014 05:41 PM
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).
RE: Cordic - Tugdual - 01-28-2014 08:43 PM
Thank you all for quick and detailed answers!
RE: Cordic - cyrille de brébisson - 01-29-2014 06:36 AM
Hello
(01-28-2014 05:39 PM)debrouxl Wrote: The ancient ARM9 processor series doesn't have floating-point acceleration like, say, the Cortex-A series does.
Incorrect, some ARM9 do, and some Cortex-A 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