Hi Niklas! On Fri, 18 Jun 2004, Niklas Knutsson wrote:

the following bug required a workaround when writing source code for Qalculate!:

cl_N log(const cl_N& a, const cl_N& b) returns zero when an exact negative integer is expected.

example:

log(recip(cl_RA(1000)), cl_N(10)); returns 0 log(cl_N(0.001), cl_N(10)); returns -3

using cln-1.1.6 gmp-4.1.2 gcc-3.3.3 glibc-2.3.3_pre20040207 linux-2.6.5-mm1

//niklas k.

Thank you very much for your bugreport. I have fixed it in CVS. It turns out to be a one-character fix: Index: src/rational/transcendental/cl_RA_logp.cc =================================================================== RCS file: /home/cvs/cln/src/rational/transcendental/cl_RA_logp.cc,v retrieving revision 1.2 diff -a -u -r1.2 cl_RA_logp.cc --- src/rational/transcendental/cl_RA_logp.cc 28 Aug 2000 22:08:23 -0000 1.2 +++ src/rational/transcendental/cl_RA_logp.cc 18 Jun 2004 21:33:23 -0000 @@ -50,7 +50,7 @@ return cl_false; // a1=1 var cl_RA l; - if (logp(a2,b,pl)) { + if (logp(a2,b,&l)) { *pl = -l; return cl_true; } else return cl_false; Regards -richy. -- Richard B. Kreckel <http://www.ginac.de/~kreckel/>