@deffnx {C Function} scm_complex_p (z)
Return @code{#t} if @var{x} is a complex number, @code{#f}
otherwise. Note that the sets of real, rational and integer
-values form subsets of the set of complex numbers, i. e. the
+values form subsets of the set of complex numbers, i.e.@: the
predicate will also be fulfilled if @var{x} is a real,
rational or integer number.
@end deffn
(remainder -13 4) @result{} -1
@end lisp
-See also @code{euclidean-quotient}, @code{euclidean-remainder} and
+See also @code{truncate-quotient}, @code{truncate-remainder} and
related operations in @ref{Arithmetic}.
@end deffn
(modulo -13 -4) @result{} -1
@end lisp
-See also @code{euclidean-quotient}, @code{euclidean-remainder} and
+See also @code{floor-quotient}, @code{floor-remainder} and
related operations in @ref{Arithmetic}.
@end deffn
@end lisp
@end deffn
+@deftypefn {Scheme Procedure} {} exact-integer-sqrt @var{k}
+@deftypefnx {C Function} void scm_exact_integer_sqrt (SCM @var{k}, SCM *@var{s}, SCM *@var{r})
+Return two exact non-negative integers @var{s} and @var{r}
+such that @math{@var{k} = @var{s}^2 + @var{r}} and
+@math{@var{s}^2 <= @var{k} < (@var{s} + 1)^2}.
+An error is raised if @var{k} is not an exact non-negative integer.
+
+@lisp
+(exact-integer-sqrt 10) @result{} 3 and 1
+@end lisp
+@end deftypefn
+
@node Comparison
@subsubsection Comparison Predicates
@rnindex zero?
expressed by the given @var{string}. @var{radix} must be an
exact integer, either 2, 8, 10, or 16. If supplied, @var{radix}
is a default radix that may be overridden by an explicit radix
-prefix in @var{string} (e.g. "#o177"). If @var{radix} is not
+prefix in @var{string} (e.g.@: "#o177"). If @var{radix} is not
supplied, then the default radix is 10. If string is not a
syntactically valid notation for a number, then
@code{string->number} returns @code{#f}.
@rnindex euclidean/
@rnindex euclidean-quotient
@rnindex euclidean-remainder
+@rnindex floor/
+@rnindex floor-quotient
+@rnindex floor-remainder
+@rnindex ceiling/
+@rnindex ceiling-quotient
+@rnindex ceiling-remainder
+@rnindex truncate/
+@rnindex truncate-quotient
+@rnindex truncate-remainder
@rnindex centered/
@rnindex centered-quotient
@rnindex centered-remainder
+@rnindex round/
+@rnindex round-quotient
+@rnindex round-remainder
The C arithmetic functions below always takes two arguments, while the
Scheme functions can take an arbitrary number. When you need to
values.
@end deftypefn
-@deffn {Scheme Procedure} euclidean/ x y
-@deffnx {Scheme Procedure} euclidean-quotient x y
-@deffnx {Scheme Procedure} euclidean-remainder x y
-@deffnx {C Function} scm_euclidean_divide (x y)
-@deffnx {C Function} scm_euclidean_quotient (x y)
-@deffnx {C Function} scm_euclidean_remainder (x y)
+@deftypefn {Scheme Procedure} {} euclidean/ @var{x} @var{y}
+@deftypefnx {Scheme Procedure} {} euclidean-quotient @var{x} @var{y}
+@deftypefnx {Scheme Procedure} {} euclidean-remainder @var{x} @var{y}
+@deftypefnx {C Function} void scm_euclidean_divide (SCM @var{x}, SCM @var{y}, SCM *@var{q}, SCM *@var{r})
+@deftypefnx {C Function} SCM scm_euclidean_quotient (SCM @var{x}, SCM @var{y})
+@deftypefnx {C Function} SCM scm_euclidean_remainder (SCM @var{x}, SCM @var{y})
These procedures accept two real numbers @var{x} and @var{y}, where the
divisor @var{y} must be non-zero. @code{euclidean-quotient} returns the
integer @var{q} and @code{euclidean-remainder} returns the real number
@var{r} such that @math{@var{x} = @var{q}*@var{y} + @var{r}} and
-@math{0 <= @var{r} < abs(@var{y})}. @code{euclidean/} returns both @var{q} and
+@math{0 <= @var{r} < |@var{y}|}. @code{euclidean/} returns both @var{q} and
@var{r}, and is more efficient than computing each separately. Note
that when @math{@var{y} > 0}, @code{euclidean-quotient} returns
@math{floor(@var{x}/@var{y})}, otherwise it returns
(euclidean/ -123.2 -63.5) @result{} 2.0 and 3.8
(euclidean/ 16/3 -10/7) @result{} -3 and 22/21
@end lisp
-@end deffn
+@end deftypefn
-@deffn {Scheme Procedure} centered/ x y
-@deffnx {Scheme Procedure} centered-quotient x y
-@deffnx {Scheme Procedure} centered-remainder x y
-@deffnx {C Function} scm_centered_divide (x y)
-@deffnx {C Function} scm_centered_quotient (x y)
-@deffnx {C Function} scm_centered_remainder (x y)
+@deftypefn {Scheme Procedure} {} floor/ @var{x} @var{y}
+@deftypefnx {Scheme Procedure} {} floor-quotient @var{x} @var{y}
+@deftypefnx {Scheme Procedure} {} floor-remainder @var{x} @var{y}
+@deftypefnx {C Function} void scm_floor_divide (SCM @var{x}, SCM @var{y}, SCM *@var{q}, SCM *@var{r})
+@deftypefnx {C Function} SCM scm_floor_quotient (@var{x}, @var{y})
+@deftypefnx {C Function} SCM scm_floor_remainder (@var{x}, @var{y})
+These procedures accept two real numbers @var{x} and @var{y}, where the
+divisor @var{y} must be non-zero. @code{floor-quotient} returns the
+integer @var{q} and @code{floor-remainder} returns the real number
+@var{r} such that @math{@var{q} = floor(@var{x}/@var{y})} and
+@math{@var{x} = @var{q}*@var{y} + @var{r}}. @code{floor/} returns
+both @var{q} and @var{r}, and is more efficient than computing each
+separately. Note that @var{r}, if non-zero, will have the same sign
+as @var{y}.
+
+When @var{x} and @var{y} are integers, @code{floor-remainder} is
+equivalent to the R5RS integer-only operator @code{modulo}.
+
+@lisp
+(floor-quotient 123 10) @result{} 12
+(floor-remainder 123 10) @result{} 3
+(floor/ 123 10) @result{} 12 and 3
+(floor/ 123 -10) @result{} -13 and -7
+(floor/ -123 10) @result{} -13 and 7
+(floor/ -123 -10) @result{} 12 and -3
+(floor/ -123.2 -63.5) @result{} 1.0 and -59.7
+(floor/ 16/3 -10/7) @result{} -4 and -8/21
+@end lisp
+@end deftypefn
+
+@deftypefn {Scheme Procedure} {} ceiling/ @var{x} @var{y}
+@deftypefnx {Scheme Procedure} {} ceiling-quotient @var{x} @var{y}
+@deftypefnx {Scheme Procedure} {} ceiling-remainder @var{x} @var{y}
+@deftypefnx {C Function} void scm_ceiling_divide (SCM @var{x}, SCM @var{y}, SCM *@var{q}, SCM *@var{r})
+@deftypefnx {C Function} SCM scm_ceiling_quotient (@var{x}, @var{y})
+@deftypefnx {C Function} SCM scm_ceiling_remainder (@var{x}, @var{y})
+These procedures accept two real numbers @var{x} and @var{y}, where the
+divisor @var{y} must be non-zero. @code{ceiling-quotient} returns the
+integer @var{q} and @code{ceiling-remainder} returns the real number
+@var{r} such that @math{@var{q} = ceiling(@var{x}/@var{y})} and
+@math{@var{x} = @var{q}*@var{y} + @var{r}}. @code{ceiling/} returns
+both @var{q} and @var{r}, and is more efficient than computing each
+separately. Note that @var{r}, if non-zero, will have the opposite sign
+of @var{y}.
+
+@lisp
+(ceiling-quotient 123 10) @result{} 13
+(ceiling-remainder 123 10) @result{} -7
+(ceiling/ 123 10) @result{} 13 and -7
+(ceiling/ 123 -10) @result{} -12 and 3
+(ceiling/ -123 10) @result{} -12 and -3
+(ceiling/ -123 -10) @result{} 13 and 7
+(ceiling/ -123.2 -63.5) @result{} 2.0 and 3.8
+(ceiling/ 16/3 -10/7) @result{} -3 and 22/21
+@end lisp
+@end deftypefn
+
+@deftypefn {Scheme Procedure} {} truncate/ @var{x} @var{y}
+@deftypefnx {Scheme Procedure} {} truncate-quotient @var{x} @var{y}
+@deftypefnx {Scheme Procedure} {} truncate-remainder @var{x} @var{y}
+@deftypefnx {C Function} void scm_truncate_divide (SCM @var{x}, SCM @var{y}, SCM *@var{q}, SCM *@var{r})
+@deftypefnx {C Function} SCM scm_truncate_quotient (@var{x}, @var{y})
+@deftypefnx {C Function} SCM scm_truncate_remainder (@var{x}, @var{y})
+These procedures accept two real numbers @var{x} and @var{y}, where the
+divisor @var{y} must be non-zero. @code{truncate-quotient} returns the
+integer @var{q} and @code{truncate-remainder} returns the real number
+@var{r} such that @var{q} is @math{@var{x}/@var{y}} rounded toward zero,
+and @math{@var{x} = @var{q}*@var{y} + @var{r}}. @code{truncate/} returns
+both @var{q} and @var{r}, and is more efficient than computing each
+separately. Note that @var{r}, if non-zero, will have the same sign
+as @var{x}.
+
+When @var{x} and @var{y} are integers, these operators are
+equivalent to the R5RS integer-only operators @code{quotient} and
+@code{remainder}.
+
+@lisp
+(truncate-quotient 123 10) @result{} 12
+(truncate-remainder 123 10) @result{} 3
+(truncate/ 123 10) @result{} 12 and 3
+(truncate/ 123 -10) @result{} -12 and 3
+(truncate/ -123 10) @result{} -12 and -3
+(truncate/ -123 -10) @result{} 12 and -3
+(truncate/ -123.2 -63.5) @result{} 1.0 and -59.7
+(truncate/ 16/3 -10/7) @result{} -3 and 22/21
+@end lisp
+@end deftypefn
+
+@deftypefn {Scheme Procedure} {} centered/ @var{x} @var{y}
+@deftypefnx {Scheme Procedure} {} centered-quotient @var{x} @var{y}
+@deftypefnx {Scheme Procedure} {} centered-remainder @var{x} @var{y}
+@deftypefnx {C Function} void scm_centered_divide (SCM @var{x}, SCM @var{y}, SCM *@var{q}, SCM *@var{r})
+@deftypefnx {C Function} SCM scm_centered_quotient (SCM @var{x}, SCM @var{y})
+@deftypefnx {C Function} SCM scm_centered_remainder (SCM @var{x}, SCM @var{y})
These procedures accept two real numbers @var{x} and @var{y}, where the
divisor @var{y} must be non-zero. @code{centered-quotient} returns the
integer @var{q} and @code{centered-remainder} returns the real number
@var{r} such that @math{@var{x} = @var{q}*@var{y} + @var{r}} and
-@math{-abs(@var{y}/2) <= @var{r} < abs(@var{y}/2)}. @code{centered/}
+@math{-|@var{y}/2| <= @var{r} < |@var{y}/2|}. @code{centered/}
returns both @var{q} and @var{r}, and is more efficient than computing
each separately.
exactly half-way between two integers, the tie is broken according to
the sign of @var{y}. If @math{@var{y} > 0}, ties are rounded toward
positive infinity, otherwise they are rounded toward negative infinity.
-This is a consequence of the requirement that @math{-abs(@var{y}/2) <= @var{r} < abs(@var{y}/2)}.
+This is a consequence of the requirement that
+@math{-|@var{y}/2| <= @var{r} < |@var{y}/2|}.
Note that these operators are equivalent to the R6RS operators
@code{div0}, @code{mod0}, and @code{div0-and-mod0}.
(centered/ 123 -10) @result{} -12 and 3
(centered/ -123 10) @result{} -12 and -3
(centered/ -123 -10) @result{} 12 and -3
+(centered/ 125 10) @result{} 13 and -5
+(centered/ 127 10) @result{} 13 and -3
+(centered/ 135 10) @result{} 14 and -5
(centered/ -123.2 -63.5) @result{} 2.0 and 3.8
(centered/ 16/3 -10/7) @result{} -4 and -8/21
@end lisp
-@end deffn
+@end deftypefn
+
+@deftypefn {Scheme Procedure} {} round/ @var{x} @var{y}
+@deftypefnx {Scheme Procedure} {} round-quotient @var{x} @var{y}
+@deftypefnx {Scheme Procedure} {} round-remainder @var{x} @var{y}
+@deftypefnx {C Function} void scm_round_divide (SCM @var{x}, SCM @var{y}, SCM *@var{q}, SCM *@var{r})
+@deftypefnx {C Function} SCM scm_round_quotient (@var{x}, @var{y})
+@deftypefnx {C Function} SCM scm_round_remainder (@var{x}, @var{y})
+These procedures accept two real numbers @var{x} and @var{y}, where the
+divisor @var{y} must be non-zero. @code{round-quotient} returns the
+integer @var{q} and @code{round-remainder} returns the real number
+@var{r} such that @math{@var{x} = @var{q}*@var{y} + @var{r}} and
+@var{q} is @math{@var{x}/@var{y}} rounded to the nearest integer,
+with ties going to the nearest even integer. @code{round/}
+returns both @var{q} and @var{r}, and is more efficient than computing
+each separately.
+
+Note that @code{round/} and @code{centered/} are almost equivalent, but
+their behavior differs when @math{@var{x}/@var{y}} lies exactly half-way
+between two integers. In this case, @code{round/} chooses the nearest
+even integer, whereas @code{centered/} chooses in such a way to satisfy
+the constraint @math{-|@var{y}/2| <= @var{r} < |@var{y}/2|}, which
+is stronger than the corresponding constraint for @code{round/},
+@math{-|@var{y}/2| <= @var{r} <= |@var{y}/2|}. In particular,
+when @var{x} and @var{y} are integers, the number of possible remainders
+returned by @code{centered/} is @math{|@var{y}|}, whereas the number of
+possible remainders returned by @code{round/} is @math{|@var{y}|+1} when
+@var{y} is even.
+
+@lisp
+(round-quotient 123 10) @result{} 12
+(round-remainder 123 10) @result{} 3
+(round/ 123 10) @result{} 12 and 3
+(round/ 123 -10) @result{} -12 and 3
+(round/ -123 10) @result{} -12 and -3
+(round/ -123 -10) @result{} 12 and -3
+(round/ 125 10) @result{} 12 and 5
+(round/ 127 10) @result{} 13 and -3
+(round/ 135 10) @result{} 14 and -5
+(round/ -123.2 -63.5) @result{} 2.0 and 3.8
+(round/ 16/3 -10/7) @result{} -4 and -8/21
+@end lisp
+@end deftypefn
@node Scientific
@subsubsection Scientific Functions
Pseudo-random numbers are generated from a random state object, which
can be created with @code{seed->random-state} or
-@code{datum->random-state}. An external representation (i.e. one
+@code{datum->random-state}. An external representation (i.e.@: one
which can written with @code{write} and read with @code{read}) of a
random state object can be obtained via
@code{random-state->datum}. The @var{state} parameter to the
@deftypefn {C Function} SCM scm_from_locale_string (const char *str)
@deftypefnx {C Function} SCM scm_from_locale_stringn (const char *str, size_t len)
Creates a new Scheme string that has the same contents as @var{str} when
-interpreted in the locale character encoding of the
-@code{current-input-port}.
+interpreted in the character encoding of the current locale.
For @code{scm_from_locale_string}, @var{str} must be null-terminated.
null-terminated and the real length will be found with @code{strlen}.
If the C string is ill-formed, an error will be raised.
+
+Note that these functions should @emph{not} be used to convert C string
+constants, because there is no guarantee that the current locale will
+match that of the source code. To convert C string constants, use
+@code{scm_from_latin1_string}, @code{scm_from_utf8_string} or
+@code{scm_from_utf32_string}.
@end deftypefn
@deftypefn {C Function} SCM scm_take_locale_string (char *str)
@deftypefn {C Function} {char *} scm_to_locale_string (SCM str)
@deftypefnx {C Function} {char *} scm_to_locale_stringn (SCM str, size_t *lenp)
-Returns a C string with the same contents as @var{str} in the locale
-encoding of the @code{current-output-port}. The C string must be freed
-with @code{free} eventually, maybe by using @code{scm_dynwind_free},
+Returns a C string with the same contents as @var{str} in the character
+encoding of the current locale. The C string must be freed with
+@code{free} eventually, maybe by using @code{scm_dynwind_free},
@xref{Dynamic Wind}.
For @code{scm_to_locale_string}, the returned string is
@var{lenp} is @code{NULL}, @code{scm_to_locale_stringn} behaves like
@code{scm_to_locale_string}.
-If a character in @var{str} cannot be represented in the locale encoding
-of the current output port, the port conversion strategy of the current
-output port will determine the result, @xref{Ports}. If output port's
-conversion strategy is @code{error}, an error will be raised. If it is
-@code{substitute}, a replacement character, such as a question mark, will
-be inserted in its place. If it is @code{escape}, a hex escape will be
-inserted in its place.
+If a character in @var{str} cannot be represented in the character
+encoding of the current locale, the default port conversion strategy is
+used. @xref{Ports}, for more on conversion strategies.
+
+If the conversion strategy is @code{error}, an error will be raised. If
+it is @code{substitute}, a replacement character, such as a question
+mark, will be inserted in its place. If it is @code{escape}, a hex
+escape will be inserted in its place.
@end deftypefn
@deftypefn {C Function} size_t scm_to_locale_stringbuf (SCM str, char *buf, size_t max_len)
unconvertable characters.
@end deftypefn
-ISO-8859-1 is the most common 8-bit character encoding. This encoding
-is also referred to as the Latin-1 encoding. The following two
-conversion functions are provided to convert between Latin-1 C strings
-and Guile strings.
+The following conversion functions are provided as a convenience for the
+most commonly used encodings.
+
+@deftypefn {C Function} SCM scm_from_latin1_string (const char *str)
+@deftypefnx {C Function} SCM scm_from_utf8_string (const char *str)
+@deftypefnx {C Function} SCM scm_from_utf32_string (const scm_t_wchar *str)
+Return a scheme string from the null-terminated C string @var{str},
+which is ISO-8859-1-, UTF-8-, or UTF-32-encoded. These functions should
+be used to convert hard-coded C string constants into Scheme strings.
+@end deftypefn
@deftypefn {C Function} SCM scm_from_latin1_stringn (const char *str, size_t len)
@deftypefnx {C Function} SCM scm_from_utf8_stringn (const char *str, size_t len)
are described below.
@deffn {Scheme Procedure} bytevector-uint-ref bv index endianness size
-@deffnx {Scheme Procedure} bytevector-sint-ref bv index endianness size
@deffnx {C Function} scm_bytevector_uint_ref (bv, index, endianness, size)
+Return the @var{size}-byte long unsigned integer at index @var{index} in
+@var{bv}, decoded according to @var{endianness}.
+@end deffn
+
+@deffn {Scheme Procedure} bytevector-sint-ref bv index endianness size
@deffnx {C Function} scm_bytevector_sint_ref (bv, index, endianness, size)
-Return the @var{size}-byte long unsigned (resp. signed) integer at
-index @var{index} in @var{bv}, decoded according to @var{endianness}.
+Return the @var{size}-byte long signed integer at index @var{index} in
+@var{bv}, decoded according to @var{endianness}.
@end deffn
@deffn {Scheme Procedure} bytevector-uint-set! bv index value endianness size
-@deffnx {Scheme Procedure} bytevector-sint-set! bv index value endianness size
@deffnx {C Function} scm_bytevector_uint_set_x (bv, index, value, endianness, size)
+Set the @var{size}-byte long unsigned integer at @var{index} to
+@var{value}, encoded according to @var{endianness}.
+@end deffn
+
+@deffn {Scheme Procedure} bytevector-sint-set! bv index value endianness size
@deffnx {C Function} scm_bytevector_sint_set_x (bv, index, value, endianness, size)
-Set the @var{size}-byte long unsigned (resp. signed) integer at
-@var{index} to @var{value}, encoded according to @var{endianness}.
+Set the @var{size}-byte long signed integer at @var{index} to
+@var{value}, encoded according to @var{endianness}.
@end deffn
The following procedures are similar to the ones above, but specialized
@end deffn
@deffn {Scheme Procedure} bytevector->uint-list bv endianness size
-@deffnx {Scheme Procedure} bytevector->sint-list bv endianness size
@deffnx {C Function} scm_bytevector_to_uint_list (bv, endianness, size)
+Return a list of unsigned integers of @var{size} bytes representing the
+contents of @var{bv}, decoded according to @var{endianness}.
+@end deffn
+
+@deffn {Scheme Procedure} bytevector->sint-list bv endianness size
@deffnx {C Function} scm_bytevector_to_sint_list (bv, endianness, size)
-Return a list of unsigned (resp. signed) integers of @var{size} bytes
-representing the contents of @var{bv}, decoded according to
-@var{endianness}.
+Return a list of signed integers of @var{size} bytes representing the
+contents of @var{bv}, decoded according to @var{endianness}.
@end deffn
@deffn {Scheme Procedure} uint-list->bytevector lst endianness size
-@deffnx {Scheme Procedure} sint-list->bytevector lst endianness size
@deffnx {C Function} scm_uint_list_to_bytevector (lst, endianness, size)
+Return a new bytevector containing the unsigned integers listed in
+@var{lst} and encoded on @var{size} bytes according to @var{endianness}.
+@end deffn
+
+@deffn {Scheme Procedure} sint-list->bytevector lst endianness size
@deffnx {C Function} scm_sint_list_to_bytevector (lst, endianness, size)
-Return a new bytevector containing the unsigned (resp. signed) integers
-listed in @var{lst} and encoded on @var{size} bytes according to
-@var{endianness}.
+Return a new bytevector containing the signed integers listed in
+@var{lst} and encoded on @var{size} bytes according to @var{endianness}.
@end deffn
@node Bytevectors as Floats
and strings using @code{scm_symbol_to_string} and
@code{scm_string_to_symbol} and work with the strings.
+@deffn {C Function} scm_from_latin1_symbol (const char *name)
+@deffnx {C Function} scm_from_utf8_symbol (const char *name)
+Construct and return a Scheme symbol whose name is specified by the
+null-terminated C string @var{name}. These are appropriate when
+the C string is hard-coded in the source code.
+@end deffn
+
@deffn {C Function} scm_from_locale_symbol (const char *name)
@deffnx {C Function} scm_from_locale_symboln (const char *name, size_t len)
Construct and return a Scheme symbol whose name is specified by
@var{name}. For @code{scm_from_locale_symbol}, @var{name} must be null
terminated; for @code{scm_from_locale_symboln} the length of @var{name} is
specified explicitly by @var{len}.
+
+Note that these functions should @emph{not} be used when @var{name} is a
+C string constant, because there is no guarantee that the current locale
+will match that of the source code. In such cases, use
+@code{scm_from_latin1_symbol} or @code{scm_from_utf8_symbol}.
@end deffn
@deftypefn {C Function} SCM scm_take_locale_symbol (char *str)
@item
a @dfn{function} value, which is used when the symbol appears in
-code in a function name position (i.e. as the first element in an
+code in a function name position (i.e.@: as the first element in an
unquoted list)
@item
created and entered into the table so that it can be found later.
Sometimes you might want to create a symbol that is guaranteed `fresh',
-i.e. a symbol that did not exist previously. You might also want to
+i.e.@: a symbol that did not exist previously. You might also want to
somehow guarantee that no one else will ever unintentionally stumble
across your symbol in the future. These properties of a symbol are
often needed when generating code during macro expansion. When
Equivalent to @code{scm_is_true (scm_keyword_p (@var{obj}))}.
@end deftypefn
-@deftypefn {C Function} SCM scm_from_locale_keyword (const char *str)
-@deftypefnx {C Function} SCM scm_from_locale_keywordn (const char *str, size_t len)
+@deftypefn {C Function} SCM scm_from_locale_keyword (const char *name)
+@deftypefnx {C Function} SCM scm_from_locale_keywordn (const char *name, size_t len)
Equivalent to @code{scm_symbol_to_keyword (scm_from_locale_symbol
-(@var{str}))} and @code{scm_symbol_to_keyword (scm_from_locale_symboln
-(@var{str}, @var{len}))}, respectively.
+(@var{name}))} and @code{scm_symbol_to_keyword (scm_from_locale_symboln
+(@var{name}, @var{len}))}, respectively.
+
+Note that these functions should @emph{not} be used when @var{name} is a
+C string constant, because there is no guarantee that the current locale
+will match that of the source code. In such cases, use
+@code{scm_from_latin1_keyword} or @code{scm_from_utf8_keyword}.
+@end deftypefn
+
+@deftypefn {C Function} SCM scm_from_latin1_keyword (const char *name)
+@deftypefnx {C Function} SCM scm_from_utf8_keyword (const char *name)
+Equivalent to @code{scm_symbol_to_keyword (scm_from_latin1_symbol
+(@var{name}))} and @code{scm_symbol_to_keyword (scm_from_utf8_symbol
+(@var{name}))}, respectively.
@end deftypefn
@node Other Types
HCoop / bpt / guile.git / blobdiff