剛好這邊有些資料，參考看看
Importing and Exporting MAT-File Data
The MATLAB C++ Math Library provides two functions, load() and save(),
that let you import mwArray variables from a MAT-file and export mwArray
variables to a MAT-file. Because MATLAB also reads and writes MAT-files,
you can use load() and save() to share data with MATLAB applications or
with other applications developed with the MATLAB C++ or C Math Library.
AMAT-file is a binary,machine-dependent file. However, it can be transported
between machines because of a machine signature in its file header. The
MATLAB C++Math Library checks the signature when it loads variables from
a MAT-file and, if a signature indicates that a file is foreign (file was saved on
a different architecture than the one on which it is being loaded), performs the
necessary conversion.
Example Program: Using load() and save()
#include <stdlib.h>
#include "matlab.hpp"
int main(void)
{
try {
mwArray x, y, z, a, b, c;
x = rand(4,4);
y = magic(7);
z = eig(x);
// Save (and name) the variables.
save("ex5.mat", "x", x, "y", y, "z", z);
// Load the named variables.
load("ex5.mat", "x", &a, "y", &b, "z", &c);
// Check to be sure the variables are equal.
if (tobool(a == x) && tobool(b == y) && tobool(c == z))
{
cout << "Success: all variables equal." << endl;
}
else
{
cout << "Failure: loaded values not equal to
saved values." << endl;
}
}
catch (mwException &ex) {
cout << ex << endl;
}
return(EXIT_SUCCESS);
}
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