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Provide %b in #'format; use it for converting between ints and bit vectors. lisp/ChangeLog addition: 2007-12-17 Aidan Kehoe <kehoea@parhasard.net> * subr.el (integer-to-bit-vector): New. * subr.el (bit-vector-to-integer): New. Provide naive implementations using the Lisp reader for these. src/ChangeLog addition: 2007-12-17 Aidan Kehoe <kehoea@parhasard.net> * doprnt.c (emacs_doprnt_1): Add support for formatted printing of both longs and bignums as base 2. * editfns.c (Fformat): Document the new %b escape for #'format. * lisp.h: Make ulong_to_bit_string available beside long_to_string. * lread.c: Fix a bug where the integer base was being ignored in certain contexts; thank you Sebastian Freundt. This is necessary for correct behaviour of #'integer-to-bit-vector and #'bit-vector-to-integer, just added to subr.el * print.c (ulong_to_bit_string): New. Analagous to long_to_string, but used all the time when %b is encountered, since we can't pass that to sprintf. man/ChangeLog addition: 2007-12-17 Aidan Kehoe <kehoea@parhasard.net> * lispref/strings.texi (Formatting Strings): Document %b for binary output.
author Aidan Kehoe <kehoea@parhasard.net>
date Mon, 17 Dec 2007 08:44:14 +0100
parents c5a2b80bc4fa
children c661944aa259
comparison
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4328:dfd878799ef0 4329:d9eb5ea14f65
2153 The other arguments are substituted into it to make the result, a string. 2153 The other arguments are substituted into it to make the result, a string.
2154 It may contain %-sequences meaning to substitute the next argument. 2154 It may contain %-sequences meaning to substitute the next argument.
2155 %s means print all objects as-is, using `princ'. 2155 %s means print all objects as-is, using `princ'.
2156 %S means print all objects as s-expressions, using `prin1'. 2156 %S means print all objects as s-expressions, using `prin1'.
2157 %d or %i means print as an integer in decimal (%o octal, %x lowercase hex, 2157 %d or %i means print as an integer in decimal (%o octal, %x lowercase hex,
2158 %X uppercase hex). 2158 %X uppercase hex, %b binary).
2159 %c means print as a single character. 2159 %c means print as a single character.
2160 %f means print as a floating-point number in fixed notation (e.g. 785.200). 2160 %f means print as a floating-point number in fixed notation (e.g. 785.200).
2161 %e or %E means print as a floating-point number in scientific notation 2161 %e or %E means print as a floating-point number in scientific notation
2162 (e.g. 7.85200e+03). 2162 (e.g. 7.85200e+03).
2163 %g or %G means print as a floating-point number in "pretty format"; 2163 %g or %G means print as a floating-point number in "pretty format";