[英]Calling Octave built-in function taking 2 arguments from C++
I am getting a segfault when running the following code. 运行以下代码时出现段错误。 Calling an Octave built-in function taking 1 argument works fine, eg Fsize.
调用带有1个参数的Octave内置函数可以正常工作,例如Fsize。 But with any of the 2 argument ones I get a segfault.
但是使用这两个参数中的任何一个,我都会遇到段错误。 I have tried Frdivide and Fplus.
我已经尝试过Frdivide和Fplus。
#include <octave/oct.h>
#include <octave/builtin-defun-decls.h>
int main() {
octave_value_list args;
octave_value_list res;
Matrix l(3,1,1.0);
Matrix r(3,1,1.0);
args(0) = l;
args(1) = r;
res = Fplus(args); // BOOM !!!
} }
Seems one has to initialize the interpreter, even thought the Octave documentation indicates that this is not necessary for built-in Octave functions. 似乎必须初始化解释器,甚至认为Octave文档指出对于内置的Octave函数而言,这不是必需的。 The following code works:
以下代码有效:
#include <octave/oct.h>
#include <octave/octave.h>
#include <octave/builtin-defun-decls.h>
#include <octave/toplev.h>
int main() {
string_vector argv(2);
argv(0) = "embedded";
argv(1) = "-q";
octave_main(2, argv.c_str_vec(), 1);
octave_value_list args;
octave_value_list res;
Matrix l(3,1,1.0);
Matrix r(3,1,1.0);
args(0) = l;
args(1) = r;
res = Fplus(args);
std::cout << res(0).matrix_value();
clean_up_and_exit(0);
}
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