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typedef __complex__ double double_complex; void p (const double_complex *t, int n) { int i; double s = ({ typeof ( t[n/2] ) arg = ( t[n/2] ); (__imag__ arg); }) ; for (i = 1; i < n/2; i++) s += 2* ({ typeof ( t[i] ) arg = ( t[i] ); (__imag__ arg); }) ; }