6502/COMMON
1
0
Fork 0
mirror of https://github.com/Russell-S-Harper/COMMON.git synced 2024-11-21 20:31:02 +00:00
Code Issues Projects Releases Wiki Activity

Revising comments.

Browse Source
This commit is contained in:
Russell-S-Harper 2018-08-07 05:22:04 -04:00
parent e887a83539
commit 954c695e0a
1 changed files with 4 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
common/common.h
View File

@ -1,7 +1,9 @@
#ifndef __COMMON_H #ifndef __COMMON_H
#define __COMMON_H #define __COMMON_H
; Using four byte quantities aabbccdd with one bit overflow/underflow, 21 bits significand, 10 bits fraction ; Using four byte quantities aabbccdd with sign bit, overflow/underflow bit, 20 bits significand, 10 bits
; fraction. The quantity is valid if the overflow/underflow bit agrees with the sign bit. The intent is
; to be able to recognize an overflow/underflow situation, rescale the arguments, and repeat.
; Largest value: $3fffffff or 1048575.999(9) ; Largest value: $3fffffff or 1048575.999(9)
; Smallest value: $c0000001 or -1048575.999(0) ; Smallest value: $c0000001 or -1048575.999(0)
@ -132,7 +134,7 @@ _EXT_C = $f0
_PLS_1 = %00000100 ; i.e. the $04 part of $00000400 _PLS_1 = %00000100 ; i.e. the $04 part of $00000400
_MNS_1 = %11111100 ; i.e. the $FC part of $FFFFFC00 _MNS_1 = %11111100 ; i.e. the $FC part of $FFFFFC00
; masks for overflow and unerflow ; masks for overflow and underflow
_MSK_O = %11000000 ; mask for overflow _MSK_O = %11000000 ; mask for overflow
_MSK_U = %11000000 ; mask for underflow _MSK_U = %11000000 ; mask for underflow