S-function for filter integration into Simulink

Dear all,

I am trying to generate S-function filter integration into Simulink using Legacy Code Tool .

I took this filter library fom https://uazu.net/fidlib/ (GitHub https://github.com/JamesHight/fidlib)

My m-file:

def = legacy_code('initialize')

def.SourceFiles = {'Simple_filter.c','fidlib.c'};

def.HeaderFiles = {'Simple_filter.h','types.h','fidlib.h'};

def.Options.language = 'C';

def.SFunctionName = 'Simple_filtering';

def.OutputFcnSpec = 'SimpleFilter(double u1, double y1[1])';

legacy_code('sfcn_cmex_generate', def);

legacy_code('compile', def);

legacy_code('slblock_generate', def);

The building process:

### Start Compiling Simple_filtering

mex('-IC:\Users\Vasyl Varvolik\Documents\MATLAB\Simple_Filter', '-c', '-outdir', 'C:\Users\Vasyl Varvolik\AppData\Local\Temp\tpebbfec31_b50d_4f60_8f6b_457d4db8894d', 'C:\Users\Vasyl Varvolik\Documents\MATLAB\Simple_Filter\Simple_filter.c')

Building with 'MinGW64 Compiler (C)'.

MEX completed successfully.

mex('-IC:\Users\Vasyl Varvolik\Documents\MATLAB\Simple_Filter', '-c', '-outdir', 'C:\Users\Vasyl Varvolik\AppData\Local\Temp\tpebbfec31_b50d_4f60_8f6b_457d4db8894d', 'C:\Users\Vasyl Varvolik\Documents\MATLAB\Simple_Filter\fidlib.c')

Building with 'MinGW64 Compiler (C)'.

In file included from C:\Users\Vasyl Varvolik\Documents\MATLAB\Simple_Filter\fast_math.h:4:0,

from C:\Users\Vasyl Varvolik\Documents\MATLAB\Simple_Filter\fidlib.c:251:

C:\Users\Vasyl Varvolik\Documents\MATLAB\Simple_Filter\constants.h:23:0: warning: "M_PI" redefined

#define M_PI 3.1415926535897932384626433832795F

In file included from C:\Users\Vasyl Varvolik\Documents\MATLAB\Simple_Filter\fidlib.c:249:0:

C:/ProgramData/MATLAB/SupportPackages/R2020a/3P.instrset/mingw_w64.instrset/x86_64-w64-mingw32/include/math.h:45:0: note: this is the location of the previous definition

#define M_PI 3.14159265358979323846

In file included from C:\Users\Vasyl Varvolik\Documents\MATLAB\Simple_Filter\fast_math.h:4:0,

from C:\Users\Vasyl Varvolik\Documents\MATLAB\Simple_Filter\fidlib.c:251:

C:\Users\Vasyl Varvolik\Documents\MATLAB\Simple_Filter\constants.h:24:0: warning: "M_PI_2" redefined

#define M_PI_2 1.5707963267948966192313216916398F

In file included from C:\Users\Vasyl Varvolik\Documents\MATLAB\Simple_Filter\fidlib.c:249:0:

C:/ProgramData/MATLAB/SupportPackages/R2020a/3P.instrset/mingw_w64.instrset/x86_64-w64-mingw32/include/math.h:46:0: note: this is the location of the previous definition

#define M_PI_2 1.57079632679489661923

MEX completed successfully.

mex('Simple_filtering.c', '-IC:\Users\Vasyl Varvolik\Documents\MATLAB\Simple_Filter', 'C:\Users\Vasyl Varvolik\AppData\Local\Temp\tpebbfec31_b50d_4f60_8f6b_457d4db8894d\Simple_filter.obj', 'C:\Users\Vasyl Varvolik\AppData\Local\Temp\tpebbfec31_b50d_4f60_8f6b_457d4db8894d\fidlib.obj')

Building with 'MinGW64 Compiler (C)'.

MEX completed successfully.

### Finish Compiling Simple_filtering

### Exit

Although it is completed successfully when I run it Matlab crashes

The project and lib can be fiound attached