[GiNaC-list] problem about cl_N output format

[Feng Feng]

Hi all, I got a problem with the csrc_cl_N output format, for example,



ex expr = pow(1+x(0),-6);

expr.print(print_csrc_cl_N(cout));




I got an output as




expt( x(0)+1, (--6))




and it seems that "--" should be only one "-".

so is it normal or a bug? 
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