To use any of the C Stat Library functions, you must first write a program in C to call the function. Each function conforms to established conventions in programming and documentation. First priority in development is given to efficient algorithms, clear documentation, and accurate results. The uniform design of the functions makes it easy to use more than one function in a given application. Also, you will find that the design consistency enables you to apply your experience with one C Stat Library function to all other C functions that you use.

The include file <imsls.h> is used in all the examples in this manual. This file contains prototypes for all IMSL-defined functions; the structures, Imsls_f_regression, Imsls_d_regression, Imsls_f_poly_regression, Imsls_d_poly_regression, Imsls_f_arma, and Imsls_d_arma; and the enumerated data types,
Imsls_arma_method, Imsls_permute, Imsls_dummy_method, Imsls_write_options, Imsls_page_options, and Imsls_error.