-// FIXME: move to complex.h ?
-#define creal(z) ((double)(z))
-#define crealf(z) ((float)(z))
-#define creall(z) ((long double)(z))
-#define cimag(z) ((union dcomplex){(z)}.a[1])
-#define cimagf(z) ((union fcomplex){(z)}.a[1])
-#define cimagl(z) ((union lcomplex){(z)}.a[1])
-