tvkalvas@duved:~/src/gsl_oveiv_bug$ gsl-config --version 1.12 tvkalvas@duved:~/src/gsl_oveiv_bug$ gcc --version gcc (GCC) 4.2.4 (Ubuntu 4.2.4-1ubuntu3) Copyright (C) 2007 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. tvkalvas@duved:~/src/gsl_oveiv_bug$ gcc -lgsl -lgslcblas test.c -o test tvkalvas@duved:~/src/gsl_oveiv_bug$ ./test Evaluate at t=0.000000 Evaluate at t=0.240000 Evaluate at t=0.360000 Evaluate at t=0.720000 Evaluate at t=1.200000 Evaluate at t=1.050000 Evaluate at t=1.200000 Evaluate at t=0.056886 Evaluate at t=0.085328 Evaluate at t=0.170657 Evaluate at t=0.284428 Evaluate at t=0.248874 Breaking at error: t= 1.200000 x= 0.000000 Evaluate at t=1.200000 Evaluate at t=1.256886 Evaluate at t=1.285328 Evaluate at t=1.370657 Evaluate at t=1.484428 Evaluate at t=1.448874 Evaluate at t=1.484428 Accept: t= 1.484428 x= 0.284428 Evaluate at t=1.484428 Evaluate at t=1.587542 Evaluate at t=1.639100 Evaluate at t=1.793771 Evaluate at t=2.000000 Evaluate at t=1.935553 Evaluate at t=2.000000 Accept: t= 2.000000 x= 0.800000 tvkalvas@duved:~/src/gsl_oveiv_bug$