ftp.nice.ch/pub/next/developer/resources/libraries/gmp.2.0.2.pl2.NIHS.tar.gz#/gmp.pkg/_gmp/includes

gmp.h
[View gmp.h] 

mp.h
[View mp.h] 

These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.