Could anyone please explain to this old newby why he got a different solution?
Thanks Kevin
I am using Cygwin64 on a Windows 10 computer. I have downloaded the gsl
pack. The header files are in /usr/local/include. I have used nano to
enter the example code from the gsl reference pdf into a file named
example.c. I have used the compile and link commands as in the gsl
reference (by copying from the reference and pasting into my Gygwin64
terminal). The only modification is that I use -o example.exe as the
first argument in the linker command. I executed example.exe and
received a value for the Bessel function J0(x) for x = 5 of J0(5) =
-1.917848549326277019e-01 instead of J0(5) = -1.775967713143382642e-01.
