This shows how to write programs that call Numerical Recipres functions, how to compile and link these programs. The Numerical Recipes Library libnrecc.a is located in the directory /usr/local/nrcp/  .   All the header files are also in this directory. The source code is available in the directory /usr/local/nrcp/C/ansi-c/ .

The program nrcp_test.cintegrates two functions f(x)=1   and g(x)=x  from  the limits 0 to 1.  It uses the function qsimp to do the integration.

To compile the program

cc -c nrcp_test.c -I/usr/local/nrcp/

To link

cc -o  nrcp_test  nrcp_test.o  -L/usr/local/nrcp/ -lnrecc -lm

To run

./nrcp_test

Sample program (prog.c) for solving a set of orinary differential equations (ODEs) using the Numerical Recipes function odeint(). This program evolves  the position and momentum of a simple harmonic oscillalor which starts from rest at x=1.