Write the functioncall_myfn, which callsmyfcn.

function[x, y] = call_myfcn(n)%#codegenx = myfcn(n,'mode1'); y = myfcn(n,'mode2');endfunctiony = myfcn (n,mode) coder.inline('never');ifstrcmp(mode,'mode1') y = n;elsey = -n;endend

Generate standalone C code. For example, generate a static library. Enable the code generation report.

codegen-config:libcall_myfcn-args{1}-report

In the code generation report, you see two function specializations forcall_myfcn.

The code generator createscall_myfcn>myfcn>1formodewith a value of'mode1'. It createscall_myfcn>myfcn>2formodewith a value of'mode2'.

In the generated C code, you see the specializationsmy_fcnandb_my_fcn.

static double b_myfcn(double n) { return -n; } static double myfcn(double n) { return n; }

To prevent the function specializations, instruct the code generator to ignore that values of themodeargument are constant.

function[x, y] = call_myfcn(n)%#codegenx = myfcn(n, coder.ignoreConst('mode1')); y = myfcn(n, coder.ignoreConst('mode2'));endfunctiony = myfcn (n,mode) coder.inline('never');ifstrcmp(mode,'mode1') y = n;elsey = -n;endend

Generate the C code.

codegen-config:libcall_myfcn-args{1}-report

In the code generation report, you do not see multiple function specializations.

In the generated C code, you see one function formy_fcn.