%.6g
5 - '12345'
7 - '1.12346'
8 - '1.23e-07'
8 - '0.123457'
7 - '123.457'
6 - '123456'
7 - '12345.7'

%6.6g
6 - ' 12345'
7 - '1.12346'
8 - '1.23e-07'
8 - '0.123457'
7 - '123.457'
6 - '123456'
7 - '12345.7'

%6g
6 - ' 12345'
7 - '1.12346'
8 - '1.23e-07'
8 - '0.123457'
7 - '123.457'
6 - '123456'
7 - '12345.7'

%.6f
12 - '12344.990000'
8 - '1.123457'
8 - '0.000000'
8 - '0.123457'
10 - '123.456780'
13 - '123456.000000'
12 - '12345.678901'

%6.6f
12 - '12344.990000'
8 - '1.123457'
8 - '0.000000'
8 - '0.123457'
10 - '123.456780'
13 - '123456.000000'
12 - '12345.678901'

%6f
12 - '12344.990000'
8 - '1.123457'
8 - '0.000000'
8 - '0.123457'
10 - '123.456780'
13 - '123456.000000'
12 - '12345.678901'