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[glibc.git] / stdio-common / reg-printf.c
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1 /* Copyright (C) 1991 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Library General Public License as
6 published by the Free Software Foundation; either version 2 of the
7 License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Library General Public License for more details.
14 You should have received a copy of the GNU Library General Public
15 License along with the GNU C Library; see the file COPYING.LIB. If
16 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
17 Cambridge, MA 02139, USA. */
19 #include <ansidecl.h>
20 #include <errno.h>
21 #include <limits.h>
22 #include <printf.h>
24 /* Array of functions indexed by format character. */
25 static printf_function *printf_funcs[UCHAR_MAX + 1];
26 printf_arginfo_function *__printf_arginfo_table[UCHAR_MAX + 1];
28 printf_function **__printf_function_table;
30 /* Register FUNC to be called to format SPEC specifiers. */
31 int
32 DEFUN(register_printf_function, (spec, converter, arginfo),
33 int spec AND printf_function converter AND
34 printf_arginfo_function arginfo)
36 if (spec < 0 || spec > (int) UCHAR_MAX)
38 errno = EINVAL;
39 return -1;
42 __printf_function_table = printf_funcs;
43 __printf_arginfo_table[spec] = arginfo;
44 printf_funcs[spec] = converter;
46 return 0;