-# printf.m4 serial 8
+# printf.m4 serial 11
dnl Copyright (C) 2003, 2007 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 Test whether the *printf family of functions supports infinite 'double'
+dnl arguments in the %f, %e, %g directives. (ISO C99, POSIX:2001)
+dnl Result is gl_cv_func_printf_infinite.
+
+AC_DEFUN([gl_PRINTF_INFINITE],
+[
+ AC_REQUIRE([AC_PROG_CC])
+ AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+ AC_CACHE_CHECK([whether printf supports infinite 'double' arguments],
+ [gl_cv_func_printf_infinite],
+ [
+ AC_TRY_RUN([
+#include <stdio.h>
+#include <string.h>
+static char buf[100];
+int main ()
+{
+ if (sprintf (buf, "%f", 1.0 / 0.0) < 0
+ || (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0))
+ return 1;
+ if (sprintf (buf, "%f", -1.0 / 0.0) < 0
+ || (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0))
+ return 1;
+ if (sprintf (buf, "%e", 1.0 / 0.0) < 0
+ || (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0))
+ return 1;
+ if (sprintf (buf, "%e", -1.0 / 0.0) < 0
+ || (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0))
+ return 1;
+ if (sprintf (buf, "%g", 1.0 / 0.0) < 0
+ || (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0))
+ return 1;
+ if (sprintf (buf, "%g", -1.0 / 0.0) < 0
+ || (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0))
+ return 1;
+ return 0;
+}], [gl_cv_func_printf_infinite=yes], [gl_cv_func_printf_infinite=no],
+ [
+changequote(,)dnl
+ case "$host_os" in
+ mingw* | pw*) gl_cv_func_printf_infinite="guessing no";;
+ *) gl_cv_func_printf_infinite="guessing yes";;
+ esac
+changequote([,])dnl
+ ])
+ ])
+])
+
+dnl Test whether the *printf family of functions supports 'long double'
+dnl arguments together with the 'L' size specifier. (ISO C99, POSIX:2001)
+dnl Result is gl_cv_func_printf_long_double.
+
+AC_DEFUN([gl_PRINTF_LONG_DOUBLE],
+[
+ AC_REQUIRE([AC_PROG_CC])
+ AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+ AC_CACHE_CHECK([whether printf supports 'long double' arguments],
+ [gl_cv_func_printf_long_double],
+ [
+ AC_TRY_RUN([
+#include <stdio.h>
+#include <string.h>
+static char buf[100];
+int main ()
+{
+ buf[0] = '\0';
+ if (sprintf (buf, "%Lf %d", 1.75L, 33, 44, 55) < 0
+ || strcmp (buf, "1.750000 33") != 0)
+ return 1;
+ buf[0] = '\0';
+ if (sprintf (buf, "%Le %d", 1.75L, 33, 44, 55) < 0
+ || strcmp (buf, "1.750000e+00 33") != 0)
+ return 1;
+ buf[0] = '\0';
+ if (sprintf (buf, "%Lg %d", 1.75L, 33, 44, 55) < 0
+ || strcmp (buf, "1.75 33") != 0)
+ return 1;
+ return 0;
+}], [gl_cv_func_printf_long_double=yes], [gl_cv_func_printf_long_double=no],
+ [
+changequote(,)dnl
+ case "$host_os" in
+ beos*) gl_cv_func_printf_long_double="guessing no";;
+ mingw* | pw*) gl_cv_func_printf_long_double="guessing no";;
+ *) gl_cv_func_printf_long_double="guessing yes";;
+ esac
+changequote([,])dnl
+ ])
+ ])
+])
+
dnl Test whether the *printf family of functions supports the 'a' and 'A'
dnl conversion specifier for hexadecimal output of floating-point numbers.
dnl (ISO C99, POSIX:2001)
[
changequote(,)dnl
case "$host_os" in
+ cygwin*) gl_cv_func_printf_flag_grouping="guessing no";;
netbsd*) gl_cv_func_printf_flag_grouping="guessing no";;
mingw* | pw*) gl_cv_func_printf_flag_grouping="guessing no";;
*) gl_cv_func_printf_flag_grouping="guessing yes";;
])
])
+dnl Test whether the *printf family of functions supports padding of non-finite
+dnl values with the 0 flag correctly. (ISO C99 + TC1 + TC2.) See
+dnl <http://lists.gnu.org/archive/html/bug-gnulib/2007-04/msg00107.html>
+dnl Result is gl_cv_func_printf_flag_zero.
+
+AC_DEFUN([gl_PRINTF_FLAG_ZERO],
+[
+ AC_REQUIRE([AC_PROG_CC])
+ AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+ AC_CACHE_CHECK([whether printf supports the zero flag correctly],
+ [gl_cv_func_printf_flag_zero],
+ [
+ AC_TRY_RUN([
+#include <stdio.h>
+#include <string.h>
+static char buf[100];
+int main ()
+{
+ if (sprintf (buf, "%010f", 1.0 / 0.0, 33, 44, 55) < 0
+ || (strcmp (buf, " inf") != 0
+ && strcmp (buf, " infinity") != 0))
+ return 1;
+ return 0;
+}], [gl_cv_func_printf_flag_zero=yes], [gl_cv_func_printf_flag_zero=no],
+ [
+changequote(,)dnl
+ case "$host_os" in
+ # Guess yes on glibc systems.
+ *-gnu*) gl_cv_func_printf_flag_zero="guessing yes";;
+ # Guess yes on BeOS.
+ beos*) gl_cv_func_printf_flag_zero="guessing yes";;
+ # If we don't know, assume the worst.
+ *) gl_cv_func_printf_flag_zero="guessing no";;
+ esac
+changequote([,])dnl
+ ])
+ ])
+])
+
dnl Test whether the snprintf function exists. (ISO C99, POSIX:2001)
dnl Result is ac_cv_func_snprintf.
# Guess yes on MacOS X >= 10.3.
darwin[1-6].*) gl_cv_func_vsnprintf_zerosize_c99="guessing no";;
darwin*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";;
+ # Guess yes on Cygwin.
+ cygwin*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";;
# Guess yes on Solaris >= 2.6.
solaris2.[0-5]*) gl_cv_func_vsnprintf_zerosize_c99="guessing no";;
solaris*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";;
dnl The results of these tests on various platforms are:
dnl
dnl 1 = gl_PRINTF_SIZES_C99
-dnl 2 = gl_PRINTF_DIRECTIVE_A
-dnl 3 = gl_PRINTF_DIRECTIVE_F
-dnl 4 = gl_PRINTF_DIRECTIVE_N
-dnl 5 = gl_PRINTF_POSITIONS
-dnl 6 = gl_PRINTF_FLAG_GROUPING
-dnl 7 = gl_SNPRINTF_PRESENCE
-dnl 8 = gl_SNPRINTF_TRUNCATION_C99
-dnl 9 = gl_SNPRINTF_RETVAL_C99
-dnl 10 = gl_SNPRINTF_DIRECTIVE_N
-dnl 11 = gl_VSNPRINTF_ZEROSIZE_C99
+dnl 2 = gl_PRINTF_INFINITE
+dnl 3 = gl_PRINTF_LONG_DOUBLE
+dnl 4 = gl_PRINTF_DIRECTIVE_A
+dnl 5 = gl_PRINTF_DIRECTIVE_F
+dnl 6 = gl_PRINTF_DIRECTIVE_N
+dnl 7 = gl_PRINTF_POSITIONS
+dnl 8 = gl_PRINTF_FLAG_GROUPING
+dnl 9 = gl_PRINTF_FLAG_ZERO
+dnl 10 = gl_SNPRINTF_PRESENCE
+dnl 11 = gl_SNPRINTF_TRUNCATION_C99
+dnl 12 = gl_SNPRINTF_RETVAL_C99
+dnl 13 = gl_SNPRINTF_DIRECTIVE_N
+dnl 14 = gl_VSNPRINTF_ZEROSIZE_C99
dnl
dnl 1 = checking whether printf supports size specifiers as in C99...
-dnl 2 = checking whether printf supports the 'a' and 'A' directives...
-dnl 3 = checking whether printf supports the 'F' directive...
-dnl 4 = checking whether printf supports the 'n' directive...
-dnl 5 = checking whether printf supports POSIX/XSI format strings with positions...
-dnl 6 = checking whether printf supports the grouping flag...
-dnl 7 = checking for snprintf...
-dnl 8 = checking whether snprintf truncates the result as in C99...
-dnl 9 = checking whether snprintf returns a byte count as in C99...
-dnl 10 = checking whether snprintf fully supports the 'n' directive...
-dnl 11 = checking whether vsnprintf respects a zero size as in C99...
+dnl 2 = checking whether printf supports infinite 'double' arguments...
+dnl 3 = checking whether printf supports 'long double' arguments...
+dnl 4 = checking whether printf supports the 'a' and 'A' directives...
+dnl 5 = checking whether printf supports the 'F' directive...
+dnl 6 = checking whether printf supports the 'n' directive...
+dnl 7 = checking whether printf supports POSIX/XSI format strings with positions...
+dnl 8 = checking whether printf supports the grouping flag...
+dnl 9 = checking whether printf supports the zero flag correctly...
+dnl 10 = checking for snprintf...
+dnl 11 = checking whether snprintf truncates the result as in C99...
+dnl 12 = checking whether snprintf returns a byte count as in C99...
+dnl 13 = checking whether snprintf fully supports the 'n' directive...
+dnl 14 = checking whether vsnprintf respects a zero size as in C99...
dnl
dnl . = yes, # = no.
dnl
-dnl 1 2 3 4 5 6 7 8 9 10 11
-dnl glibc 2.5 . . . . . . . . . . .
-dnl glibc 2.3.6 . # . . . . . . . . .
-dnl FreeBSD 5.4, 6.1 . ? . . . . . . . . .
-dnl MacOS X 10.3.9 . # . . . . . . . . .
-dnl OpenBSD 3.9, 4.0 . # ? . . ? . . . ? ?
-dnl Cygwin 2007 . # # . . ? . . . . ?
-dnl Cygwin 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 10.20, 11.00, 11.11, 11.23 # # # . . . . . # # #
-dnl IRIX 6.5 # # # . . . . . # . .
-dnl OSF/1 5.1 # # # . . . . . # . #
-dnl OSF/1 4.0d # # # . . . # # # # #
-dnl NetBSD 4.0 . ? ? . . ? . . . ? ?
-dnl NetBSD 3.0 . # # . # # . . . . .
-dnl BeOS # # # . # . . . . . .
-dnl mingw # # # . # # . # # # .
+dnl 1 2 3 4 5 6 7 8 9 10 11 12 13 14
+dnl glibc 2.5 . . . . . . . . . . . . . .
+dnl glibc 2.3.6 . . . # . . . . . . . . . .
+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 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 10.20, 11.{00,11,23} # . . # # . . . # . . # # #
+dnl IRIX 6.5 # ? . # # . . . # . . # . .
+dnl OSF/1 5.1 # ? . # # . . . # . . # . #
+dnl OSF/1 4.0d # ? . # # . . . # # # # # #
+dnl NetBSD 4.0 . ? ? ? ? . . ? ? . . . ? ?
+dnl NetBSD 3.0 . ? ? # # . # # # . . . . .
+dnl BeOS # ? # # # . # . . . . . . .
+dnl mingw # # # # # . # # # . # # # .