extern "C" {
int gfang_(float*,float*,float*,float*,float*,int*);
int gsrotm_(int*,float*,float*,float*,float*,float*,float*);
int gsvolu_(char*,char*,int*,float*,int*,int*,int,int);
int gspos_(char*,int*,char*,float*,float*,float*,int*,char*,int,int,int);
int gsdet_(char*,char*,int*,char*,int*,int*,int*,int*,int*,int*,int,int,int);
int gsdeth_(char*,char*,int*,char*,int*,float*,float*,int,int,int);
int gsmate_(int*,char*,float*,float*,float*,float*,float*,float*,int*,int);
int gsmixt_(int*,char*,float*,float*,float*,int*,float*,int);
int gstmed_(int*,char*,int*,int*,int*,float*,float*,float*,float*,float*,float*,float*,int*,int);
int gsckov_(int*,int*,float*,float*,float*,float*);
}