I'm writing a fixpoint that requires an integer to be incremented "towards" zero at every iteration. This is too complicated for Coq to recognize as a decreasing argument automatically and I'm trying prove that my fixpoint will terminate.
I have been copying (what I believe is) an example of a well-foundedness proof for a step function on Z from the standard library. (Here)
Require Import ZArith.Zwf.
Section wf_proof_wf_inc.
Variable c : Z.
Let Z_increment (z:Z) := (z + ((Z.sgn c) …当我尝试C在代码中构建一个项目时:使用GLM的ubuntu 14.04上的块我得到了这个
致命错误:cmath:没有这样的文件或目录
任何想法如何解决这一问题？