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Warning: imaginary constants are a GNU extension

Cuparra over 3 years ago

Hello everyone,

I'm developing a code that involves complex number (complex.h).
In every line that has the imaginary I, such as:

float complex sum = 0.0 + 0.0*I;

noise[j][i] = conjf(eigen_vec[i][k] + eigen_vec[i+m-1][k]*I);

Keil gives that warning: " imaginary constants are a GNU extension".

In the complex.h has:

define I _Complex_I

Why is it giving that warning?
Is my code going to work properly?
How can I solve that warning?

Thanks in advanced.