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dal (dal-1.198) [xmmsas_20211130_0941-20.0.0]

Introduction

This document contains reference material for the XMM SAS Data Access Layer (DAL) software.

The DAL's Application Programmable Interface (API) supports four languages; F90, C++, C and Perl.

Primarily, this document will serve as reference material for the F90 DAL API. The C++ and C APIs are also described but with less detail.

Where appropriate, a language-independent approach has been taken and this will partially serve as general user information.

It is a mandatory requirement that all SAS task developers must use the DAL APIs to access FITS files.



XMM-Newton SOC -- 2021-11-30