(12C) Banker's Rounding Method

[Eddie W. Shore]

The banker's rounding method involves rounding numeric amounts to the nearest integer. When the number ends in 0.5 (1.5, 3.5, 8.5, etc), special rules apply:

The decimal gets rounded to the nearest even integer. For example: 0.5, 2.5, and 4.5 round down to 0, 2, and 4 respectively. However, 1.5, 3.5, and 5.5 are rounded up to 2, 4, and 6 respectively.

Code:

001  STO 0
002  INTG
003  STO 1
004  LSTx  
005  FRAC
006  STO 2
007   .
008  5
009   -
010   x=0
011   GTO 018
012   RCL 0
013   FIX 0
014   RND
015   STO 4
016   FIX 2
017   GTO 000
018   RCL 1 
019   2
020   ÷
021   FRAC
022   x=0
023   GTO 029
024   RCL 1
025   1
026   +
027   STO 4
028   GTO 000
029   RCL 1
030   STO 4
031   GTO 000

Original blog post: https://edspi31415.blogspot.com/2018/11/...nkers.html