-# printf.m4 serial 9
+# printf.m4 serial 10
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 '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)
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_PRINTF_FLAG_ZERO
-dnl 8 = gl_SNPRINTF_PRESENCE
-dnl 9 = gl_SNPRINTF_TRUNCATION_C99
-dnl 10 = gl_SNPRINTF_RETVAL_C99
-dnl 11 = gl_SNPRINTF_DIRECTIVE_N
-dnl 12 = gl_VSNPRINTF_ZEROSIZE_C99
+dnl 2 = gl_PRINTF_LONG_DOUBLE
+dnl 3 = gl_PRINTF_DIRECTIVE_A
+dnl 4 = gl_PRINTF_DIRECTIVE_F
+dnl 5 = gl_PRINTF_DIRECTIVE_N
+dnl 6 = gl_PRINTF_POSITIONS
+dnl 7 = gl_PRINTF_FLAG_GROUPING
+dnl 8 = gl_PRINTF_FLAG_ZERO
+dnl 9 = gl_SNPRINTF_PRESENCE
+dnl 10 = gl_SNPRINTF_TRUNCATION_C99
+dnl 11 = gl_SNPRINTF_RETVAL_C99
+dnl 12 = gl_SNPRINTF_DIRECTIVE_N
+dnl 13 = 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 whether printf supports the zero flag correctly...
-dnl 8 = checking for snprintf...
-dnl 9 = checking whether snprintf truncates the result as in C99...
-dnl 10 = checking whether snprintf returns a byte count as in C99...
-dnl 11 = checking whether snprintf fully supports the 'n' directive...
-dnl 12 = checking whether vsnprintf respects a zero size as in C99...
+dnl 2 = checking whether printf supports 'long double' arguments...
+dnl 3 = checking whether printf supports the 'a' and 'A' directives...
+dnl 4 = checking whether printf supports the 'F' directive...
+dnl 5 = checking whether printf supports the 'n' directive...
+dnl 6 = checking whether printf supports POSIX/XSI format strings with positions...
+dnl 7 = checking whether printf supports the grouping flag...
+dnl 8 = checking whether printf supports the zero flag correctly...
+dnl 9 = checking for snprintf...
+dnl 10 = checking whether snprintf truncates the result as in C99...
+dnl 11 = checking whether snprintf returns a byte count as in C99...
+dnl 12 = checking whether snprintf fully supports the 'n' directive...
+dnl 13 = 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 12
-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, 11.11, 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
+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, 11.11, 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 # # # # . # # # . # # # .
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