MP — A multiple precision package

Abstract
A package written in Fortran is presented that allows multiple precision calculations through simple subroutine calls. The package can be used in an already existing program or in a new program after proper substitution of Fortran statements by the above mentioned calls. The available subroutines range from basic arithmetic operations to trigonometric functions and provide up to 300 digit precision or higher on VAX machines.

Title of program: MP
Catalogue Id: ABRJ_v1_0

Nature of problem
In many situations a higher precision than the one furnished by the machine is necessary to get confinding results, like in variational calculations in Nuclear Physics, when large harmonic oscillator bases are used.

Versions of this program held in the CPC repository in Mendeley Data
ABRJ_v1_0; MP; 10.1016/0010-4655(90)90183-2

This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2018)

本文介绍了一种使用 Fortran 编写的软件包，该软件包通过简单的子程序调用实现高精度计算。该软件包可应用于现有程序或新程序中，只需将上述调用替换 Fortran 语句即可。软件包提供的子程序涵盖了从基本的算术运算到三角函数等，在 VAX 计算机上可提供高达 300 位或更高的精度。

程序名称：MP
目录编号：ABRJ_v1_0

问题性质：在许多情况下，为了获得可靠的计算结果，需要比机器提供的精度更高的精度，例如在核物理中的变分计算，当使用大型谐振子基时。

本程序版本存放在 CPC 程序库中的 Mendeley 数据，版本信息如下：ABRJ_v1_0; MP; 10.1016/0010-4655(90)90183-2

本程序已从贝尔法斯特女王大学（1969-2018年）持有的 CPC 程序库中导入。