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apple2_print_fixed16_fraction
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Cleanup fract-to-decimal conversion (again)

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Michaelangel007 2017-06-11 07:53:26 -07:00
parent d9adfe73f7
commit 04f9b73513
1 changed files with 7 additions and 5 deletions
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@ -18,18 +18,20 @@ Given a fractional number `N` represented as 16-bit integer then:
Example:
```
0.7106 * 65536 = $B5E9
'.'
+-----------------------------+
| |
0.7106 * 65536 = $B5E9 |
| |
| v
v '.'
$B5E9 * $A = $7.1B1A
$1B1A * $A = $1.0F04
$0F04 * $A = $0.9628
$9628 * $A = $5.DD90
$5DD9 * $A = $8.A7A0
0.71058 _______________________^
```
An optimization for N*10 is that this is equivalent to: `N*8 + N*2`
An optimization for `N*10` is that this is equivalent to: `N*8 + N*2`
# Application