MATLAB爱好者论坛-LabFans.com - 查看单个帖子 - Why char is stored as 2 bytes in Matlab S-Function

poster · 2019-11-26, 16:43

I would like to pass an uint8 array to my S-Function as a parameter:

inParam = char(uint8(1:7))

In the S-Function I did the followings

UINT8_T *inParam = (UINT8_T *)mxGetPr(ssGetSFcnParam(S, PARAM_IN_PORT_NR)); //;

but I saw that actually the array elements are stored as 2 bytes.

UINT16_T *inPorts = (UINT16_T *)mxGetPr(ssGetSFcnParam(S, PARAM_IN_PORT_NR)); //

// I can loop through the data

// This is only a snippet

*(inPorts++);

Why is that? Is this happening in all the Matlab versions?

2019-11-26, 16:43	#1
poster 高级会员注册日期: 2019-11-21 帖子: 3,006 声望力: 66	Why char is stored as 2 bytes in Matlab S-Function I would like to pass an uint8 array to my S-Function as a parameter: `inParam = char(uint8(1:7))` In the S-Function I did the followings `UINT8_T inParam = (UINT8_T )mxGetPr(ssGetSFcnParam(S, PARAM_IN_PORT_NR)); //;` but I saw that actually the array elements are stored as 2 bytes. `UINT16_T inPorts = (UINT16_T )mxGetPr(ssGetSFcnParam(S, PARAM_IN_PORT_NR)); // // I can loop through the data // This is only a snippet *(inPorts++);` Why is that? Is this happening in all the Matlab versions? More answer...