GSL——gsl_matrix 中频繁出现的MULTIPLICITY的值为多少
这是从GNU官网上考下来的一段代码，它是说MULTIPLICITY是一个定义数据多样性的常数，
当所参与计算的数位复数时MULTIPLICITY的值为2 当为实数时值为1
它的定义在gsl文档的根目录的template_on.c文档里
Re: [Help-gsl] Macro definitions
From: Francesco AbbateSubject: Re: [Help-gsl] Macro definitions
Date: Sat, 27 Aug 2011 11:25:40 +0200
2011/8/27 Greg Lyukshin <address@hidden>:
> Hello everyone,
> Forgive me for a silly question but I can't seem to be able to find the
> meaning of macro called MULTIPLICITY. It is used all over, including the
> source file called permute_source.c, which is located in the permutation
> folder of gsl libraries.
> Does anyone know what MULTIPLICITY means?
> Thank you!
Hi Greg,
the MULTIPLICITY macro definition is part of the GSL template system.
You will find the definition in the file templates_on.h in the root
directory.
The meaning of the MULTIPLICITY is to take into account complex number
that can be expressed as a pair of real number. So MULTIPLICITY is 2
for complex number and 1 for real number independently of the base
type that can be either float, double or also other more exotic types.
这是从GNU官网上考下来的一段代码，它是说MULTIPLICITY是一个定义数据多样性的常数，
当所参与计算的数位复数时MULTIPLICITY的值为2 当为实数时值为1
它的定义在gsl文档的根目录的template_on.c文档里