mexFunction return valur error after doing clear all
显示 更早的评论
Hello,
I'm running C code as mexFunction and the result returned was correct before I added 'clear all'. After adding 'clear all' at the beginning of the compile .m script, certain values of the output matrix became infinitely large, which I guess are addresses instead of the calculated values. Then after omitting 'clear all', the output matrix was correct again.
What could have caused the error? If without 'clear all', the mexFunction gave the correct answer, can I conclude that the C code contains no error?
clear all;
load('parametersForKalmanFilter.mat');
blaslib = fullfile('C:\Program Files\MATLAB\R2011b\extern\lib\win64\microsoft\libmwblas.lib');
lapacklib = fullfile('C:\Program Files\MATLAB\R2011b\extern\lib\win64\microsoft\libmwlapack.lib');
mex('-largeArrayDims', 'kalmanFilter.c', 'mathFunction64.c', 'softConstrainedAddFunctions.c', blaslib, lapacklib)
[output1] = kalmanFilter(varA, varB, varC, varD);
采纳的回答
Kaustubha Govind
2012-4-10
0 个投票
Could you replace "clear all" with "clear mex" and see if have similar behavior? That is, having "clear mex" causes issues, but commenting it out gets the right result. If the issue is "clear mex", you could look for things like static/persistent variables in your C code and examine how they are being used.
更多回答（0 个）
类别
在 帮助中心 和 File Exchange 中查找有关 Operators and Elementary Operations 的更多信息
产品
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
