**1. NAME AND TITLE**

LAZY**: **General Experimental Data Processing
Program.

**2. CONTRIBUTOR**

AB
Atomenergi, Stockholm 43, Sweden through the OECD Nuclear Energy Agency Data
Bank, Issy-les-Moulineaux, France.

**3. CODING LANGUAGE
AND COMPUTER**

Fortran IV; IBM 360 Series (P00595I036000).

**4. NATURE OF
PROBLEM SOLVED**

In treating experimental data certain problems (curve fitting etc.) repeat themselves with only small variations. LAZY is a general program capable of treating many of these problems and has the following main features:

A - Facilities for tabulation, derivation, integration, least square fitting, calculation of roots and solution of differential equations are built in. The method to be used is chosen on the input list.

B - The function to be treated is given in mathematical notation on the input list. The rules to write this function are fairly general and most of the expressions frequently used can be formed.

**5. METHOD OF
SOLUTION**

None listed.

**6. RESTRICTIONS OR
LIMITATIONS**

None listed.

**7. TYPICAL RUNNING
TIME**

Not provided.

**8. COMPUTER
HARDWARE REQUIREMENTS**

IBM 360 (32k memory).

**9. COMPUTER
SOFTWARE REQUIREMENTS**

IBM 360 Operating System.

**10. REFERENCES**

**a) Included Documentation:**

G. Naslund: “LAZY - A General Program (FORTRAN IV) for Data Treatment,” AE-RFN-195 (May 1965) and Corrections ( June 1967).

**11. CONTENTS OF CODE
PACKAGE**

The package is distributed on a CD with a compressed zip file including source files, sample problem data, output, and documentation.

**12. DATE OF ABSTRACT**

November 2013.

**KEYWORDS: **DATA
PROCESSING, DIFFERENTIAL EQUATIONS, LEAST SQUARE FIT