[Emacs-diffs] emacs/doc/misc calc.texi

[Jay Belanger]

CVSROOT:        /cvsroot/emacs
Module name:    emacs
Changes by:     Jay Belanger <jpb>      09/11/22 02:19:04

Modified files:
        doc/misc       : calc.texi 

Log message:
        (Radix modes): Discuss alternate bases for two's complement notations.

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/emacs/doc/misc/calc.texi?cvsroot=emacs&r1=1.43&r2=1.44

Patches:
Index: calc.texi
===================================================================
RCS file: /cvsroot/emacs/emacs/doc/misc/calc.texi,v
retrieving revision 1.43
retrieving revision 1.44
diff -u -b -r1.43 -r1.44
--- calc.texi   16 Nov 2009 23:41:19 -0000      1.43
+++ calc.texi   22 Nov 2009 02:19:03 -0000      1.44
@@ -13173,41 +13173,42 @@
 in the current radix.  (Larger integers will still be displayed in their
 entirety.) 
 
-With the command @kbd{C-u d 2}, Calc will display integers using
-twos-complement notation, using the current word-size to determine
-the number of bits.  When using twos-complement notation, a negative
-word size might be appropriate (@pxref{Binary Functions}).  If the
-absolute value of the word size is @expr{w}, then twos-complement
-notation will represent the integers in the symmetric interval from
+
+Calc can display @expr{w}-bit integers using two's complement notation
+and binary, octal or hexadecimal display radix with the commands
address@hidden d 2}, @kbd{C-u d 8} or @kbd{C-u d 6}, respectively.  In this
+case a negative word size might be appropriate (@pxref{Binary Functions}).
+The integers in the symmetric interval from
 @texline @math{-2^{w-1}}
 @infoline @expr{-2^(w-1)}
 to
 @texline @math{2^{w-1}-1}
 @infoline @expr{2^(w-1)-1}
-using the binary numbers from @expr{0} to @expr{2^w}; the
-integers from @expr{0} to 
+will be represented by using the integers from @expr{0} to @expr{2^w};
+the integers from @expr{0} to
 @texline @math{2^{w-1}-1}
 @infoline @expr{2^(w-1)-1}
-will be represented by their usual binary form and the integers
+will be represented by themselves and the integers
 from 
 @texline @math{-2^{w-1}}
 @infoline @expr{-2^(w-1)}
-to @expr{-1} will be represented by first adding @expr{2^w} to them
-and then using the usual binary form (so they will be represented by
-the integers from
+to @expr{-1} will have @expr{2^w} added to them, so they will be
+represented by the integers from
 @texline @math{2^{w-1}}
 @infoline @expr{2^(w-1)}
-to @expr{2^w}).  Calc will represent a twos-complement integer
-by the radix @expr{2}, two @kbd{#} symbols, and the @expr{w} binary
-digits (including any necessary leading zeros).  Numbers that are not
-displayed in twos-complement notation (i.e., that aren't integers from 
+to @expr{2^w}.  Calc will represent a twos-complement integer
+by the radix (either @expr{2}, @expr{8} or @expr{16}), two @kbd{#}
+symbols, and then the digits (including any necessary leading zeros to
+include all @expr{w} bits).  Numbers that are not displayed in 
+twos-complement notation (i.e., that aren't integers from
 @texline @math{-2^{w-1}}
 @infoline @expr{-2^(w-1)}
 to 
 @c (
 @texline @math{2^{w-1}-1})
 @infoline @expr{2^(w-1)-1})
-will be represented using Calc's usual binary notation.
+will be represented using Calc's usual notation (in the appropriate
+radix).
 
 @node Grouping Digits, Float Formats, Radix Modes, Display Modes
 @subsection Grouping Digits