Multiple precision interval arithmetic library

Current versions

mpfi requires the following formulae to be installed:
gmp 6.1.2_1 GNU multiple precision arithmetic library
mpfr 3.1.6 C library for multiple-precision floating-point computations

Formula history

ilovezfs Use “squiggly” heredocs.
ilovezfs mpfi: fix test on 10.13
Mike McQuaid mpfi: remove 32-bit option
Baptiste Fontaine mpfi: use an https homepage url
Nikolaus Wittenstein Add descriptions to all remaining homebrew packages
Xu Cheng mpfi: add test
Xu Cheng mpfi: modernize
Jack Nagel mpfi: let the build system detect the arch to build for