prefer (X ? 1 : -1) when converting from boolean (1,0) to int (1,-1)
[pspp] / lib / uniname /
drwxr-xr-x   ..
-rwxr-xr-x 13430 gen-uninames.lisp
-rw-r--r-- 18014 uniname.c
-rw-r--r-- 1461038 uninames.h