How can I find the specific implementation code of functions such as gsl-Matrix-add?

[EchoFyLinda]

我想要把matrix部分的代码include到我的c语言项目中，但是我的工作不允许把gsl库全部编译后导入。因此我想通过只include部分的matrix代码，但是我在整个gsl项目的源码里面都没看见gsl_Matrix_add函数的实现（只看到了gsl_Matrix_add函数的声明），还有很多gsl_matrix的函数都是这样，请问我应该怎么样才能找到gsl_Matrix_add等等函数的具体实现代码？

Translation by fanyi.baidu.com:
I want to include the code from the Matrix section in my C language project, but my job does not allow for the compilation and import of all the GSL libraries. So I want to include only a portion of the matrix code, but I haven't seen the implementation of the gsl-Matrix-add function in the source code of the entire gsl project (only the declaration of the gsl-Matrix-add function), and there are many functions of gsl-Matrix that are like this. How can I find the specific implementation code of functions such as gsl-Matrix-add?

[4er4er4er]

This repository (ampl/gsl) only uses GSL to make numerical and scientific functions available to the AMPL modeling language. For help with GSL matrix functions, you could try posting to one of the GSL mailing lists.