Encode the number 123.456 as a decimal64 number. First decide on the significand and exponent to use, then encode the exponent and first digit of the significand to create the CF and BXCF fields. Last, use Table 6.3 to encode the significand mapping the remaining 15 decimal digits to five declets.

Table 6.3

aei pqr stu wxy 000 bcd fgh 0 jkm 001 bcd fgh 1 00m 010 bcd jkh 01m 011 bcd 10h 11m 100 jkd fgh 10m 101 fgd 01h 11m 110 jkd 00h 11m 111 00d 11h 11m