WP 34S and 31S bugs and fixes

[emece67]

Apparently I've found another bug.

This time it is inside function decNumberLnGamma in file decn.c. It causes the LN[GAMMA] function to crash when called with negative arguments that have an odd integer part (say -1.5, -3.5, and so on).

Problem is in lines 1853-1854 of decn.c that say:

Code:

        // Figure out S * PI mod 2PI
        decNumberMod(&u, &s, &const_2);

and must say:

Code:

        // Figure out xin * PI mod 2PI
        decNumberMod(&u, xin, &const_2);

(&s is not initialized, this causes the issue).

Regards.