Hi again Brian, Here we are trying to build a functional library of GSL 0.9 with Visual C++ 6.0. When we build it in debug configuration there is no errors at all in the test cases, but when we build the release versions of the libraries and the test programs we get 28 failures (See below). It seems to be related with the optimisation flags ("maximizate speed" choosen, /O2 flag) because if we build all, in the release configuration, but changing the optimization to "default" then we get 0 errors. This is a issue to investigate in more depth, I think ;-). Best regards. José Miguel. --------------------->8-------------------------------------------------------- FAIL: qagiu(f455) smooth elist (3.1474288913331199e-014 observed vs 3.1473804321981764e-014 expected) [...] FAIL: filip gsl_fit_multilinear cov00 (88854.396979064302 observed vs 88854.387618829263 expected) FAIL: filip gsl_fit_multilinear cov11 (313353.53093073762 observed vs 313353.49779115315 expected) FAIL: filip gsl_fit_multilinear cov22 (217601.34836382096 observed vs 217601.32529824311 expected) FAIL: filip gsl_fit_multilinear cov33 (51621.78781601938 observed vs 51621.782340961217 expected) FAIL: filip gsl_fit_multilinear cov44 (5133.4172587447338 observed vs 5133.4167149056166 expected) FAIL: filip gsl_fit_multilinear cov55 (233.77549738541126 observed vs 233.7754726891439 expected) FAIL: filip gsl_fit_multilinear cov66 (5.0037740242150477 observed vs 5.0037734979842003 expected) FAIL: filip gsl_fit_multilinear cov77 (0.049117345206935024 observed vs 0.049117340072805889 expected) FAIL: filip gsl_fit_multilinear cov88 (0.0002026744316204776 observed vs 0.00020267441059574351 expected) FAIL: filip gsl_fit_multilinear cov99 (2.8688603819991648e-007 observed vs 2.8688600870584576e-007 expected) FAIL: filip gsl_fit_multilinear cov1010 (8.039505268652566e-011 observed vs 8.039504450571134e-011 expected) [...] FAIL: gsl_sf_legendre_Plm_e(100, 5, 0.999, &r) expected: -1983161080.380621 obtained: -1983161080.38064 0.02135698560189238 1.07692e-011 fracdiff: 4.628527347686955e-015 value not within tolerance of expected value -1983161080.3806396 0.021356985601892382 [...] FAIL: gsl_sf_legendre_sphPlm_e(10, 0, 0.999, &r) expected: 1.222575412279739 obtained: 1.222575412279737 2.307463332491048e-015 1.88738e-015 fracdiff: 5.448611251987747e-016 value not within tolerance of expected value 1.2225754122797372 2.307463332491048e-015 [...] FAIL: gsl_isnan(nan) (0 observed vs 1 expected) [...] FAIL: gsl_finite(nan) (1 observed vs 0 expected) -- ------------------------------------------------------------------- Jose Miguel Buenaposada Biencinto Facultad de Informática | Computer Science School Universidad Politécnica de Madrid (UPM) | Madrid Tech. University. Campus de Montegancedo s/n 28660 Boadilla del Monte, Madrid (ESPAÑA)| (SPAIN) Voice +34 91 336 69 47 Fax +34 91 352 48 19 e-mail: jmbuena@dia.fi.upm.es web : http://www.dia.fi.upm.es/~jmbuena ------------------------------------------------------------------- Yo soy Precario FPU, ¿ y tu ?: http://www.precarios.org