-# printf.m4 serial 29
-dnl Copyright (C) 2003, 2007-2009 Free Software Foundation, Inc.
+# printf.m4 serial 33
+dnl Copyright (C) 2003, 2007-2010 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
])
dnl Test whether the *printf family of functions supports infinite and NaN
-dnl 'double' arguments in the %f, %e, %g directives. (ISO C99, POSIX:2001)
+dnl 'double' arguments and negative zero arguments in the %f, %e, %g
+dnl directives. (ISO C99, POSIX:2001)
dnl Result is gl_cv_func_printf_infinite.
AC_DEFUN([gl_PRINTF_INFINITE],
}
return 0;
}
+static int
+have_minus_zero ()
+{
+ static double plus_zero = 0.0;
+ double minus_zero = - plus_zero;
+ return memcmp (&plus_zero, &minus_zero, sizeof (double)) != 0;
+}
static char buf[10000];
static double zero = 0.0;
int main ()
if (sprintf (buf, "%g", zero / zero) < 0
|| !strisnan (buf, 0, strlen (buf)))
return 1;
+ /* This test fails on HP-UX 10.20. */
+ if (have_minus_zero ())
+ if (sprintf (buf, "%g", - zero) < 0
+ || strcmp (buf, "-0") != 0)
+ return 1;
return 0;
}], [gl_cv_func_printf_infinite=yes], [gl_cv_func_printf_infinite=no],
[
if (sprintf (buf, "%F", 1.0 / 0.0) < 0
|| (strcmp (buf, "INF") != 0 && strcmp (buf, "INFINITY") != 0))
return 1;
- /* This catches a Cygwin 2007 bug. */
+ /* This catches a Cygwin 1.5.x bug. */
if (sprintf (buf, "%.F", 1234.0) < 0
|| strcmp (buf, "1234") != 0)
return 1;
])
dnl Test whether the *printf family of functions supports the %ls format
-dnl directive.
+dnl directive and in particular, when a precision is specified, whether
+dnl the functions stop converting the wide string argument when the number
+dnl of bytes that have been produced by this conversion equals or exceeds
+dnl the precision.
dnl Result is gl_cv_func_printf_directive_ls.
AC_DEFUN([gl_PRINTF_DIRECTIVE_LS],
#include <time.h>
#include <wchar.h>
#include <string.h>
-static wchar_t wstring[] = { 'a', 'b', 'c', 0 };
int main ()
{
char buf[100];
- buf[0] = '\0';
- sprintf (buf, "%ls", wstring);
- return strcmp (buf, "abc") != 0;
+ /* Test whether %ls works at all.
+ This test fails on OpenBSD 4.0, IRIX 6.5, Solaris 2.6, Haiku, but not on
+ Cygwin 1.5. */
+ {
+ static const wchar_t wstring[] = { 'a', 'b', 'c', 0 };
+ buf[0] = '\0';
+ if (sprintf (buf, "%ls", wstring) < 0
+ || strcmp (buf, "abc") != 0)
+ return 1;
+ }
+ /* This test fails on IRIX 6.5, Solaris 2.6, Cygwin 1.5, Haiku (with an
+ assertion failure inside libc), but not on OpenBSD 4.0. */
+ {
+ static const wchar_t wstring[] = { 'a', 0 };
+ buf[0] = '\0';
+ if (sprintf (buf, "%ls", wstring) < 0
+ || strcmp (buf, "a") != 0)
+ return 1;
+ }
+ /* Test whether precisions in %ls are supported as specified in ISO C 99
+ section 7.19.6.1:
+ "If a precision is specified, no more than that many bytes are written
+ (including shift sequences, if any), and the array shall contain a
+ null wide character if, to equal the multibyte character sequence
+ length given by the precision, the function would need to access a
+ wide character one past the end of the array."
+ This test fails on Solaris 10. */
+ {
+ static const wchar_t wstring[] = { 'a', 'b', (wchar_t) 0xfdfdfdfd, 0 };
+ buf[0] = '\0';
+ if (sprintf (buf, "%.2ls", wstring) < 0
+ || strcmp (buf, "ab") != 0)
+ return 1;
+ }
+ return 0;
}], [gl_cv_func_printf_directive_ls=yes], [gl_cv_func_printf_directive_ls=no],
[
changequote(,)dnl
case "$host_os" in
openbsd*) gl_cv_func_printf_directive_ls="guessing no";;
- solaris2.[1-6]*) gl_cv_func_printf_directive_ls="guessing no";;
irix*) gl_cv_func_printf_directive_ls="guessing no";;
+ solaris*) gl_cv_func_printf_directive_ls="guessing no";;
+ cygwin*) gl_cv_func_printf_directive_ls="guessing no";;
beos* | haiku*) gl_cv_func_printf_directive_ls="guessing no";;
*) gl_cv_func_printf_directive_ls="guessing yes";;
esac
dnl FreeBSD 5.4, 6.1 . . . . # . . . . . . # . # . . . . . .
dnl MacOS X 10.3.9 . . . . # . . . . . . # . # . . . . . .
dnl OpenBSD 3.9, 4.0 . . # # # # . # . # . # . # . . . . . .
-dnl Cygwin 2007 (= Cygwin 1.5.24) . . . . # # . . . . ? # ? ? . . . . . .
-dnl Cygwin 2006 (= Cygwin 1.5.19) # . . . # # . ? . # ? # ? ? . . . . . .
-dnl Solaris 10 . . # # # . . . . . . # . . . . . . . .
-dnl Solaris 7 ... 9 # . # # # # . . . . . # . . . . . . . .
-dnl Solaris 2.6 # . # # # # . # . . . # . . . . . . . .
+dnl Cygwin 1.7.0 (2009) . . . # . . . ? . . . . . ? . . . . . .
+dnl Cygwin 1.5.25 (2008) . . . # # . . # . . . . . # . . . . . .
+dnl Cygwin 1.5.19 (2006) # . . # # # . # . # . # # # . . . . . .
+dnl Solaris 10 . . # # # . . # . . . # . . . . . . . .
+dnl Solaris 2.6 ... 9 # . # # # # . # . . . # . . . . . . . .
dnl Solaris 2.5.1 # . # # # # . # . . . # . . # # # # # #
dnl AIX 5.2 . . # # # . . . . . . # . . . . . . . .
dnl AIX 4.3.2, 5.1 # . # # # # . . . . . # . . . . . . . .
dnl HP-UX 11.31 . . . . # . . . . . . # . . . . # # . .
dnl HP-UX 11.{00,11,23} # . . . # # . . . . . # . . . . # # . #
-dnl HP-UX 10.20 # . . . # # . ? . . # # . . . . # # ? #
+dnl HP-UX 10.20 # . # . # # . ? . . # # . . . . # # ? #
dnl IRIX 6.5 # . # # # # . # . . . # . . . . # . . .
dnl OSF/1 5.1 # . # # # # . . . . . # . . . . # . . #
dnl OSF/1 4.0d # . # # # # . . . . . # . . # # # # # #
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