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authorRoland McGrath <roland@gnu.org>1995-03-10 18:31:02 +0000
committerRoland McGrath <roland@gnu.org>1995-03-10 18:31:02 +0000
commitece07193c79ef873a9ef1c09475a770a4d753702 (patch)
tree33fcaa95cec709618b366bae3e5ada38165849ed /stdio
parentc21ec3268d68fa786caac2abe87d2c35bd7d7956 (diff)
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Doc fixes. Don't #include <stddef.h>. (printf_function): Make last arg ARGS a vector of pointers instead of a pointer to va_list.
Diffstat (limited to 'stdio')
-rw-r--r--stdio/printf.h30
1 files changed, 20 insertions, 10 deletions
diff --git a/stdio/printf.h b/stdio/printf.h
index c369222281..0f381c77f4 100644
--- a/stdio/printf.h
+++ b/stdio/printf.h
@@ -28,8 +28,6 @@ __BEGIN_DECLS
#define __need_size_t
#include <stddef.h>
-#include <stdarg.h> /* Need va_list. */
-
struct printf_info
{
@@ -51,24 +49,35 @@ struct printf_info
/* Type of a printf specifier-handler function.
STREAM is the FILE on which to write output.
INFO gives information about the format specification.
- Arguments can be read from ARGS.
+ ARGS is a vector of pointers to the argument data;
+ the number of pointers will be the number returned
+ by the associated arginfo function for the same INFO.
+
The function should return the number of characters written,
or -1 for errors. */
-typedef int printf_function __P ((FILE * __stream,
- __const struct printf_info * __info,
- va_list * __args));
+typedef int printf_function __P ((FILE *__stream,
+ __const struct printf_info *__info,
+ __const void **__const __args));
+
+/* Type of a printf specifier-arginfo function.
+ INFO gives information about the format specification.
+ N, ARGTYPES, and return value are as for printf_parse_format. */
+
typedef int printf_arginfo_function __P ((__const struct printf_info * __info,
size_t __n,
int *__argtypes));
-/* Register FUNC to be called to format SPEC specifiers.
- ARGINFO, if not NULL, is a function used by `parse_printf_format'
- to determine how many arguments a SPEC conversion requires,
- and what their types are. */
+
+/* Register FUNC to be called to format SPEC specifiers; ARGINFO must be
+ specified to determine how many arguments a SPEC conversion requires and
+ what their types are, even if your program never calls
+ `parse_printf_format'. */
+
extern int register_printf_function __P ((int __spec, printf_function __func,
printf_arginfo_function __arginfo));
+
/* Parse FMT, and fill in N elements of ARGTYPES with the
types needed for the conversions FMT specifies. Returns
the number of arguments required by FMT.
@@ -84,6 +93,7 @@ extern size_t parse_printf_format __P ((__const char *__fmt,
size_t __n,
int *__argtypes));
+
/* Codes returned by `parse_printf_format' for basic types.
These values cover all the standard format specifications.