@c -*-texinfo-*-
@c This is part of the GNU Guile Reference Manual.
-@c Copyright (C) 1996, 1997, 2000, 2001, 2002, 2003, 2004, 2006, 2007,
-@c 2008, 2009, 2010, 2011, 2012, 2013, 2014 Free Software Foundation, Inc.
+@c Copyright (C) 1996, 1997, 2000-2004, 2006-2014
+@c Free Software Foundation, Inc.
@c See the file guile.texi for copying conditions.
@node Simple Data Types
@deftypefnx {C Function} scm_t_uint64 scm_to_uint64 (SCM x)
@deftypefnx {C Function} scm_t_intmax scm_to_intmax (SCM x)
@deftypefnx {C Function} scm_t_uintmax scm_to_uintmax (SCM x)
+@deftypefnx {C Function} scm_t_intptr scm_to_intptr_t (SCM x)
+@deftypefnx {C Function} scm_t_uintptr scm_to_uintptr_t (SCM x)
When @var{x} represents an exact integer that fits into the indicated
C type, return that integer. Else signal an error, either a
`wrong-type' error when @var{x} is not an exact integer, or an
@deftypefnx {C Function} SCM scm_from_uint64 (scm_t_uint64 x)
@deftypefnx {C Function} SCM scm_from_intmax (scm_t_intmax x)
@deftypefnx {C Function} SCM scm_from_uintmax (scm_t_uintmax x)
+@deftypefnx {C Function} SCM scm_from_intptr_t (scm_t_intptr x)
+@deftypefnx {C Function} SCM scm_from_uintptr_t (scm_t_uintptr x)
Return the @code{SCM} value that represents the integer @var{x}.
These functions will always succeed and will always return an exact
number.
@code{scm_t_wchar} is a signed, 32-bit integer.
@end deftypefn
+Characters also have ``formal names'', which are defined by Unicode.
+These names can be accessed in Guile from the @code{(ice-9 unicode)}
+module:
+
+@example
+(use-modules (ice-9 unicode))
+@end example
+
+@deffn {Scheme Procedure} char->formal-name chr
+Return the formal all-upper-case Unicode name of @var{ch},
+as a string, or @code{#f} if the character has no name.
+@end deffn
+
+@deffn {Scheme Procedure} formal-name->char name
+Return the character whose formal all-upper-case Unicode name is
+@var{name}, or @code{#f} if no such character is known.
+@end deffn
+
@node Character Sets
@subsection Character Sets
@item @nicode{\0}
NUL character (ASCII 0).
+@item @nicode{\(}
+Open parenthesis. This is intended for use at the beginning of lines in
+multiline strings to avoid confusing Emacs lisp modes.
+
@item @nicode{\} followed by newline (ASCII 10)
Nothing. This way if @nicode{\} is the last character in a line, the
string will continue with the first character from the next line,
@node Symbol Read Syntax
@subsubsection Extended Read Syntax for Symbols
+@cindex r7rs-symbols
+
The read syntax for a symbol is a sequence of letters, digits, and
@dfn{extended alphabetic characters}, beginning with a character that
cannot begin a number. In addition, the special cases of @code{+},
|\| is a vertical bar|
@end example
+Note that there's also an @code{r7rs-symbols} print option
+(@pxref{Scheme Write}). To enable the use of this notation, evaluate
+one or both of the following expressions:
+
+@example
+(read-enable 'r7rs-symbols)
+(print-enable 'r7rs-symbols)
+@end example
+
+
@node Symbol Uninterned
@subsubsection Uninterned Symbols