another experimental floating-point type
the mpn_scan1 code is no longer used
+sgn, abs, cmp, cmpabs, get_mpfr, randtest, and some initial test code
rm whitespace
rounding code
change order of fmpr rnd defs
add more test code
more test code
add more functions
more functions and test functions
multiplication code
replace function
preliminary addition code; some other code adjustments
add sub
add add_si/ui/fmpz methods
cleanup
include module in Makefile.in
more subtraction methods
division code
Merge branch 'master' into arf