$ port provides /opt/local/include/gsl/gsl_math.h
/opt/local/include/gsl/gsl_math.h is provided by: gsl
$ port info gsl
gsl @1.15, Revision 1 (math, science)
Variants: doc, gcc43, gcc44, gcc45, gcc46, gcc47, optimize, universal
Description: The GNU Scientific Library (GSL) is a numerical library for C
and C++ programmers. It is free software under the GNU General
Public License. The library provides a wide range of
mathematical routines such as random number generators, special
functions and least-squares fitting. There are over 1000
functions in total.
Homepage: http://www.gnu.org/software/gsl
Build Dependencies: texinfo
Conflicts with: gsl-devel
Platforms: darwin
License: GPL-3+
Maintainers:sudo port install gsl2.1 An Example Program
======================
The following short program demonstrates the use of the library by
computing the value of the Bessel function J_0(x) for x=5,
#include <stdio.h>
#include <gsl/gsl_sf_bessel.h>
int
main (void)
{
double x = 5.0;
double y = gsl_sf_bessel_J0 (x);
printf ("J0(%g) = %.18e\n", x, y);
return 0;
}
The output is shown below, and should be correct to double-precision
accuracy,(1)
J0(5) = -1.775967713143382920e-01
The steps needed to compile this program are described in the following
sections.
---------- Footnotes ----------
(1) The last few digits may vary slightly depending on the compiler
and platform used--this is normal.$ cat > bessel.c << EOF
> #include <stdio.h>
> #include <gsl/gsl_sf_bessel.h>
>
> int
> main (void)
> {
> double x = 5.0;
> double y = gsl_sf_bessel_J0 (x);
> printf ("J0(%g) = %.18e\n", x, y);
> return 0;
> }
> EOF
$ gcc -Wall -I/opt/local/include -L/opt/local/lib -lgsl -o bessel bessel.c
$ ./bessel
J0(5) = -1.775967713143382642e-01
$I'd be surprised if it did. Is your professor handing out a preconfigured cygwin environment, somehow?
Thanks for your example. I am following what you did in terminal, does it look like it is installed?
nbp-152-194:~ Colin$ sudo port install gsl
Password:
---> Fetching archive for gsl
---> Attempting to fetch gsl-1.15_2.darwin_11.x86_64.tbz2 from http://packages.macports.org/gsl
---> Attempting to fetch gsl-1.15_2.darwin_11.x86_64.tbz2.rmd160 from http://packages.macports.org/gsl
---> Installing gsl @1.15_2
---> Deactivating gsl @1.15_1
---> Cleaning gsl
---> Activating gsl @1.15_2
---> Cleaning gsl
---> Updating database of binaries: 100.0%
---> Scanning binaries for linking errors: 100.0%
---> No broken files found.
nbp-152-194:~ Mike$