matlab to c

I converted a function using matlab using matlab coder. in .m file i had declared:----

>> a.b = 37000; a.c = 8;

but as output in .c file i got:----

>>a.b=34000.0 a.c =7.0

? why has the values changed?

[Kaustubha Govind]

Could you include a simple code snippet that we can use to reproduce the issue. It might also help to mention the command you used to generate code, as well as the MATLAB version.

Answer 1

[Walter Roberson]

Do those variables happen to be loop control variables in a context where they are incremented by 3000 and 1 respectively before they are used?

[ECE09 ITBHU]

No , they aren't. i am making a simple function which outputs a structure named " a ".

[Arnaud Miege]

As previously asked, can you post a code snippet and the command used to generate the code, so that we can reproduce the issue?

Answer 2

[Mike Hosea]

I echo the requests for more of the code. However, let me just point out that MATLAB Coder performs some optimizations. If you had code like this

n = 1;
if ~isreal(x)
  n = n + 1;
end

You will probably see

n = 2.0;

generated if x is not real. Is it possible that after your assignment there are statements that the compiler can evaluate during compilation because the values/conditions are already known? -- Mike