USING: formatting generalizations kernel math math.functions ;

100000000000000.01             100000000000000.011
100.01                         100.011
10000000000000.001 10000.0 /f  1000000000.0000001000
0.001                          0.0010000001
0.000000000000000000000101     0.0
2 sqrt dup *                   2.0
2 sqrt dup neg *              -2.0
3.14159265358979323846         3.14159265358979324

[ 2dup -1e-15 ~ "%+47.30f %+47.30f -1e-15 ~ : %u\n" printf ]
2 8 mnapply