Trig Tangent Bug (3884 version WP-34S)

[Paul Dale]

I think I found it via code inspection. The increased size of the numbers in the tangent code path caused overflows which could impact the things badly.

I also uncovered a very subtle bug in the range reduction code where an interrupt had the potential to alter the conditional tests that determined the octants -- very unlikely and possibly not harmful but better fixed.

The down side is a eight more bytes of stack space for comparisons. I hope we've got the headroom for the matrix functions.

Barry, care to give this a go?


- Pauli