2.andresraba3

README

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-A PDF version of "Structure and Interpretation of Computer Programs" (SICP) by Abelson and Sussman. Low resolution bitmap images are replaced by vector graphics (SVG) and mathematics is typeset in TeX. Typography and layout are improved for better on-screen legibility. This edition is suitable for medium-sized screens (like iPad).
+A PDF version of "Structure and Interpretation of Computer Programs" (SICP) by Abelson, Sussman, and Sussman.  Low resolution bitmap images are replaced by vector graphics (SVG) and mathematics is typeset in TeX.  Typography and layout are improved for better on-screen legibility.  This edition is suitable for medium-sized screens (like 10" tablets).
 
 It is based on Neil Van Dyke's Texinfo version: http://www.neilvandyke.org/sicp-texi/
 
 Official SICP page with HTML version: http://mitpress.mit.edu/sicp/
 
-(See also http://github.com/sarabander/sicp-pocket/ It's a new project cloned from the current one (sicp-pdf) to adapt the PDF to small screens (like Kindle). We are still in very early stage. Thanks Gavrie (http://github.com/gavrie/sicp-pdf) for the start!)
+An adaptation to pocket format is now finished: http://github.com/sarabander/sicp-pocket/

src/LICENSE

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+
+    LICENSING TERMS
+
+ 1. sicp.texi, sicp.pdf, and illustrations in directory 'fig' 
+    are licensed under Creative Commons Attribution-ShareAlike 3.0 
+    Unported License (http://creativecommons.org/licenses/by-sa/3.0/).
+
+ 2. The configuration and macro files needed to compile the book -- 
+    ex-fig-ref.pl, texinfo.tex, and utopia.tex -- are under GNU GPL v.3:
+
+
                     GNU GENERAL PUBLIC LICENSE
                        Version 3, 29 June 2007
 

src/ex-fig-ref.pl

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+#! /usr/bin/perl -w
+
+###################################################
+#  Generates tabulated cross references           #
+#  pointing to all exercises or figures in SICP.  #
+#  Usage: ./ex-fig-ref.pl -e > exercises.texi     #
+#  or ./ex-fig-ref.pl -f > figures.texi           #
+#  (both of which are @included by sicp.texi).    #
+#                                                 #
+#  © 2012 Andres Raba / License: GNU GPL v.3      #
+###################################################
+
+use Math::BigFloat;
+
+$columns = 12;		# no. of columns in the table
+$squeeze = 0.70;	# decrease first column width 
+
+%ex_per_chap = (	# how many exercises per chapter
+	1 => 46,
+	2 => 97,
+	3 => 82,
+	4 => 79,
+	5 => 52
+);
+
+%fig_per_chap = (	# how many figures per chapter
+	1 => 5,
+	2 => 26,
+	3 => 38,
+	4 => 6,
+	5 => 18
+);
+
+if (defined($ARGV[0]) and $ARGV[0] eq "-e") {
+	$reftype = "Exercise";
+	%ref_per_chap = %ex_per_chap;
+
+} elsif (defined($ARGV[0]) and $ARGV[0] eq "-f") {
+	$reftype = "Figure";
+	%ref_per_chap = %fig_per_chap;
+
+} else {
+	print "Choose '-e' for list of exercises or '-f' for list of figures.\n";
+}
+
+foreach $chap_no (sort keys(%ref_per_chap)) {
+
+	print "\@subsubheading Chapter $chap_no \n\n";
+	print "\@multitable \@columnfractions ";
+
+	$frac = Math::BigFloat->new(1.0 / $columns);
+	# each column as a fraction of page width
+
+	$roundfrac = $frac->fround(2);		
+	# is there a simpler way to round?
+
+	print $squeeze * $roundfrac, " ";
+	for ($i = 2; $i <= $columns; $i++) {
+		print "$roundfrac ";
+	}
+	print "\n";
+
+	for ($ref_no = 1; $ref_no <= $ref_per_chap{$chap_no}; $ref_no++) {
+
+		if (($ref_no == 1) || ((($ref_no - 1) % $columns) == 0)) {
+			print "\@item \n";
+		}
+
+		print "\@ref{$reftype $chap_no.$ref_no,,$chap_no.$ref_no}";
+
+		if (($ref_no % $columns) != 0) {
+			print " \@tab \n";
+		} else {
+			print "\n";
+		}
+	}
+
+	print "\@end multitable \n\n";
+}