void sitsum(float[],float[],long[],long,long,long,float[],
	float[]);
void sivset(long,long[],long,long,float[]);
void sl7itv(long,float[],float[],float[]);
float sl7svn(long,float[],float[],float[]);
float sl7svx(long,float[],float[],float[]);
void sq7apl(long,long,long,float*,float[],long);
void sq7rfh(long*,long[],long,long,long,long,float*,
	float[],long,float[]);
float sr7mdc(long);
void srn2gb(float[][2],float[],float*,long[],long,long,long,
	long,long*,long*,long,float[],float[],float[],
	float[]);
void srnsgb(float*,float[],float[][2],float[],float*,long[][2],long[],
	long,long,long,long,long,long,long,
	long,float[],float[]);
void ss7cpr(float[],long[],long,long);
void sv2axy(long,float[],float,float[],float[]);
void sv7cpy(long,float[],float[]);
void sv7prm(long,long[],float[]);
void sv7scp(long,float[],float);