void dcopy(long,double[],long,double[],long);
void duacos(double[],double[]);
void duasin(double[],double[]);
void duatan(double[],double[]);
void duatn2(double[],double[],double[]);
void ducos(double[],double[]);
void ducosh(double[],double[]);
void dudif(double[],double[],double[]);
void dudif1(double,double[],double[]);
void duexp(double[],double[]);
void dulog(double[],double[]);
void dupro(double[],double[],double[]);
void dupro1(double,double[],double[]);
void dupwri(long,double[],double[]);
void duquo(double[],double[],double[]);
void duquo1(double,double[],double[]);
void duset(double,long,double[]);
void dusetn(long,long,long);
void dusin(double[],double[]);
void dusinh(double[],double[]);
void dusqrt(double[],double[]);
void dusum(double[],double[],double[]);
void dusum1(double,double[],double[]);
void dutan(double[],double[]);
void dutanh(double[],double[]);