V6-COPY-5966 The XPORT engine converts negative zero to a very small non-zero number

If a variable has a value of negative zero, the XPORT engine converts this value to a number that is incredibly close to zero. Generally, a zero is stored with a positive sign; however, a negative zero is stored with a negative sign ( ie. the first bit of the number is a 1 rather than a 0).

  This behavior can be replicated as follows (both x and y have a value
  of negative zero):
     libname tran sasv5xpt 'tran1.dat';
     data one;  x= input('8000000000000000',hex16.);
     y = round(0,1);     /* this also creates a negative zero  */
     proc copy in=work out=tran; select one; run;

The negative zero is converted to a number that is very close to zero (such as 5.39E-79 ) .

This problem has been corrected in Release 6.08

System	Release Reported	Release Fixed
IBM OS/2	6.06	6.08
BULL	6.07 TS201
HP-UX Operating Systems	6.07 TS201	6.09
NeXT	6.07 TS201
Silicon Graphics - IRIX	6.07 TS201
Siemens Unix	6.07 TS201
SunOS 3.0	6.07 TS201
SunOS 4.0	6.07 TS201	6.09
HP - Apollo	6.07 TS101
AIX/6000	6.07 TS101	6.09
Data General Aviion	6.07 TS101
HP-UX Operating Systems	6.07 TS101
Silicon Graphics Unix	6.07 TS101
DEC Ultrix	6.07 TS101	6.09

No Fixes Available