Make #'parse-integer Lisp-visible, extend it, allowing non-ASCII digits. src/ChangeLog addition: 2015-02-25 Aidan Kehoe <kehoea@parhasard.net> * lread.c (read_atom): Use the new calling convention for parse_integer(). * lisp.h: Change the declaration of parse_integer (). * number.h (bignum_set_emacs_int, make_bignum_emacs_uint): New #defines, used in data.c. * lread.c (read_integer): Ditto. * lread.c (read1): Ditto. * data.c (find_highest_value): New. * data.c (fill_ichar_array): New. * data.c (build_fixnum_to_char_map): New. * data.c (Fset_digit_fixnum_map): New. * data.c (Fdigit_char_p): Moved from cl-extra.el. * data.c (Fdigit_char): Moved from cl-extra.el. * data.c (parse_integer): Moved from lread.c. * data.c (Fparse_integer): Made available to Lisp. * data.c (syms_of_data): Make the new subrs available. * data.c (vars_of_data): Make the new vars available. Expose parse_integer to Lisp, make it follow the Common Lisp API (with some extensions, to allow us to support non ASCII digit characters). lisp/ChangeLog addition: 2015-02-25 Aidan Kehoe <kehoea@parhasard.net> * cl-extra.el (digit-char-p): Moved to data.c. * cl-extra.el (digit-char): Moved to data.c. tests/ChangeLog addition: 2015-02-25 Aidan Kehoe <kehoea@parhasard.net> * automated/lisp-tests.el: parse_integer(), used in #'read, now signals invalid-argument rather than invalid-read-syntax, check for that. * automated/lisp-tests.el: Check #'parse-integer now it's available to Lisp, check #'digit-char, #'digit-char-p and the congruence in behaviour, check the XEmacs-specific RADIX-TABLE argument behaviour.

--- a/src/number.h	Sat Jan 10 19:43:28 2015 +0900
+++ b/src/number.h	Wed Feb 25 11:47:12 2015 +0000
@@ -101,12 +101,18 @@
 #if SIZEOF_EMACS_INT == SIZEOF_LONG
 # define bignum_fits_emacs_int_p(b) bignum_fits_long_p(b)
 # define bignum_to_emacs_int(b) bignum_to_long(b)
+# define bignum_set_emacs_int bignum_set_long
+# define make_bignum_emacs_uint(b) make_bignum_un(b)
 #elif SIZEOF_EMACS_INT == SIZEOF_INT
 # define bignum_fits_emacs_int_p(b) bignum_fits_int_p(b)
 # define bignum_to_emacs_int(b) bignum_to_int(b)
+# define bignum_set_emacs_int bignum_set_long
+# define make_bignum_emacs_uint(b) make_bignum_un(b)
 #else
 # define bignum_fits_emacs_int_p(b) bignum_fits_llong_p(b)
 # define bignum_to_emacs_int(b) bignum_to_llong(b)
+# define bignum_set_emacs_int bignum_set_llong
+# define make_bignum_emacs_uint(b) make_bignum_ull(b)
 #endif
 
 extern Lisp_Object make_bignum (long);