Does anyone know of a good C math library for 8 bit PICs (PIC16F
type)? The ones HI-TECH C provides are a bit strange. The sine values
that the sin function calculates are a bit off. My calculators and
computers are all giving the right answer, but the HI-TECH library is
only accurate to about three decimal places. After that, the numbers
don't match my calculator and my computer. I looked at the source code
for sine and it *looks* like they're using the CORDIC algorithm. I
thought that (after reading various articles on the Internet) that
most calculators use CORDIC to compute sine. So shouldn't my
calculator and HI-TECH be giving the same answer? I'm building a
calculator, so I want my math functions to be giving the right values.

If anyone has any answers to explain this anomaly or any links to
other math libraries, I would really appreciate it.

I tried to look through uClibc but their library is HUGE and designed
for 32 bit architectures I believe. It would take wayyyyy too long to
strip out the useful bits from their library. Same with other
libraries I've looked at.

-- 
solarwind
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