Pass matlab array to c function as mxArray

1 次查看（过去 30 天）
Bogdan Iliuta
Bogdan Iliuta 2019-12-12
评论： Bogdan Iliuta 2019-12-16
Hi,
I'm trying to pass a matlab array to a C function but the coder translates the array to a double[] type and I would need a mxArray * type.
Here is the Matlab code:
coder.cinclude('container_wrap.h');
coder.ceval('put_mxArray', 'key', [3 4 5 6]);
The container_wrap.h contains the declaration of put_mxArray:
#ifndef __CONTAINER_H__
#define __CONTAINER_H__
#ifdef __cplusplus
extern "C" {
#else
#include <stdint.h>
#endif
typedef struct mxArray mxArray;
void put_mxArray(char * key, mxArray * val);
void put_uint16_t(char * key, uint16_t val);
uint16_t get_uint16_t(char *key);
#ifdef __cplusplus
}
#endif
#endif /* __CONTAINER_H__ */
The generated code by the coder is this (this is just the piece of generated code that calls put_mxArray):
double dv23[4];
dv23[0] = 3.0;
dv23[1] = 4.0;
dv23[2] = 5.0;
dv23[3] = 6.0;
emxInit_uint8_T(&r18, 3);
emxInit_real_T(&r19, 3);
put_mxArray(cv0, dv23);
Is there a way to force the coder to generate code that passes the array as mxArray ? Can I use the mxArray inside my C code or mxArrays are just for Matlab internal use (can be used only by the generated C code or mex files) and I have to use the more basic types in my C code?
Thank you.
  1 个评论
Bogdan Iliuta
Bogdan Iliuta 2019-12-16
As a more generic question. According to this link I should be able to pass mxArrays in both ways between Matlab and C functions. Do you happen to have any example that does this?

请先登录，再进行评论。

请先登录，再回答此问题。

回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 MATLAB Coder 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by