Fix sign of negative zeros.
[pspp] / lib /
drwxr-xr-x   ..
-rw-r--r-- 21 .cvsignore
-rw-r--r-- 1026 ChangeLog
-rw-r--r-- 139 Makefile.am
drwxr-xr-x - gsl-extras
drwxr-xr-x - misc