Imported Upstream version 0.9.6+really0.9.3upstream/0.9.6+really0.9.3

1 files changed, 51 insertions, 92 deletions

diff --git a/gnulib-m4/frexpl.m4 b/gnulib-m4/frexpl.m4
index cd3ac6e5..80165204 100644
--- a/gnulib-m4/frexpl.m4
+++ b/gnulib-m4/frexpl.m4
@@ -1,5 +1,5 @@
-# frexpl.m4 serial 20
-dnl Copyright (C) 2007-2015 Free Software Foundation, Inc.
+# frexpl.m4 serial 9
+dnl Copyright (C) 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.
@@ -7,29 +7,29 @@ dnl with or without modifications, as long as this notice is preserved.
 AC_DEFUN([gl_FUNC_FREXPL],
 [
   AC_REQUIRE([gl_MATH_H_DEFAULTS])
-  AC_REQUIRE([gl_LONG_DOUBLE_VS_DOUBLE])
-
-  dnl Persuade glibc <math.h> to declare frexpl().
-  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
-
   dnl Check whether it's declared.
-  dnl Mac OS X 10.3 has frexpl() in libc but doesn't declare it in <math.h>.
-  AC_CHECK_DECL([frexpl], , [HAVE_DECL_FREXPL=0], [[#include <math.h>]])
-
+  dnl MacOS X 10.3 has frexpl() in libc but doesn't declare it in <math.h>.
+  AC_CHECK_DECL([frexpl], , [HAVE_DECL_FREXPL=0], [#include <math.h>])
   FREXPL_LIBM=
   if test $HAVE_DECL_FREXPL = 1; then
-    gl_CHECK_FREXPL_NO_LIBM
+    AC_CACHE_CHECK([whether frexpl() can be used without linking with libm],
+      [gl_cv_func_frexpl_no_libm],
+      [
+        AC_TRY_LINK([#include <math.h>
+                     long double x;],
+                    [int e; return frexpl (x, &e) > 0;],
+          [gl_cv_func_frexpl_no_libm=yes],
+          [gl_cv_func_frexpl_no_libm=no])
+      ])
     if test $gl_cv_func_frexpl_no_libm = no; then
       AC_CACHE_CHECK([whether frexpl() can be used with libm],
         [gl_cv_func_frexpl_in_libm],
         [
           save_LIBS="$LIBS"
           LIBS="$LIBS -lm"
-          AC_LINK_IFELSE(
-            [AC_LANG_PROGRAM(
-               [[#include <math.h>
-                 long double x;]],
-               [[int e; return frexpl (x, &e) > 0;]])],
+          AC_TRY_LINK([#include <math.h>
+                       long double x;],
+                      [int e; return frexpl (x, &e) > 0;],
             [gl_cv_func_frexpl_in_libm=yes],
             [gl_cv_func_frexpl_in_libm=no])
           LIBS="$save_LIBS"
@@ -46,7 +46,7 @@ AC_DEFUN([gl_FUNC_FREXPL],
       LIBS="$save_LIBS"
       case "$gl_cv_func_frexpl_works" in
         *yes) gl_func_frexpl=yes ;;
-        *)    gl_func_frexpl=no; REPLACE_FREXPL=1 ;;
+        *)    gl_func_frexpl=no; REPLACE_FREXPL=1; FREXPL_LIBM= ;;
       esac
     else
       gl_func_frexpl=no
@@ -57,13 +57,7 @@ AC_DEFUN([gl_FUNC_FREXPL],
     fi
   fi
   if test $HAVE_DECL_FREXPL = 0 || test $gl_func_frexpl = no; then
-    dnl Find libraries needed to link lib/frexpl.c.
-    if test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 1; then
-      AC_REQUIRE([gl_FUNC_FREXP])
-      FREXPL_LIBM="$FREXP_LIBM"
-    else
-      FREXPL_LIBM=
-    fi
+    AC_LIBOBJ([frexpl])
   fi
   AC_SUBST([FREXPL_LIBM])
 ])
@@ -71,12 +65,19 @@ AC_DEFUN([gl_FUNC_FREXPL],
 AC_DEFUN([gl_FUNC_FREXPL_NO_LIBM],
 [
   AC_REQUIRE([gl_MATH_H_DEFAULTS])
-  AC_REQUIRE([gl_LONG_DOUBLE_VS_DOUBLE])
   dnl Check whether it's declared.
-  dnl Mac OS X 10.3 has frexpl() in libc but doesn't declare it in <math.h>.
-  AC_CHECK_DECL([frexpl], , [HAVE_DECL_FREXPL=0], [[#include <math.h>]])
+  dnl MacOS X 10.3 has frexpl() in libc but doesn't declare it in <math.h>.
+  AC_CHECK_DECL([frexpl], , [HAVE_DECL_FREXPL=0], [#include <math.h>])
   if test $HAVE_DECL_FREXPL = 1; then
-    gl_CHECK_FREXPL_NO_LIBM
+    AC_CACHE_CHECK([whether frexpl() can be used without linking with libm],
+      [gl_cv_func_frexpl_no_libm],
+      [
+        AC_TRY_LINK([#include <math.h>
+                     long double x;],
+                    [int e; return frexpl (x, &e) > 0;],
+          [gl_cv_func_frexpl_no_libm=yes],
+          [gl_cv_func_frexpl_no_libm=no])
+      ])
     if test $gl_cv_func_frexpl_no_libm = yes; then
       gl_FUNC_FREXPL_WORKS
       case "$gl_cv_func_frexpl_works" in
@@ -93,28 +94,14 @@ AC_DEFUN([gl_FUNC_FREXPL_NO_LIBM],
         [Define if the frexpl() function is available in libc.])
     fi
   fi
-])
-
-dnl Test whether frexpl() can be used without linking with libm.
-dnl Set gl_cv_func_frexpl_no_libm to 'yes' or 'no' accordingly.
-AC_DEFUN([gl_CHECK_FREXPL_NO_LIBM],
-[
-  AC_CACHE_CHECK([whether frexpl() can be used without linking with libm],
-    [gl_cv_func_frexpl_no_libm],
-    [
-      AC_LINK_IFELSE(
-        [AC_LANG_PROGRAM(
-           [[#include <math.h>
-             long double x;]],
-           [[int e; return frexpl (x, &e) > 0;]])],
-        [gl_cv_func_frexpl_no_libm=yes],
-        [gl_cv_func_frexpl_no_libm=no])
-    ])
+  if test $HAVE_DECL_FREXPL = 0 || test $gl_func_frexpl_no_libm = no; then
+    AC_LIBOBJ([frexpl])
+  fi
 ])
 
 dnl Test whether frexpl() works on finite numbers (this fails on
-dnl Mac OS X 10.4/PowerPC, on AIX 5.1, and on BeOS), on denormalized numbers
-dnl (this fails on Mac OS X 10.5/i386), and also on infinite numbers (this
+dnl MacOS X 10.4/PowerPC, on AIX 5.1, and on BeOS), on denormalized numbers
+dnl (this fails on MacOS X 10.5/i386), and also on infinite numbers (this
 dnl fails e.g. on IRIX 6.5 and mingw).
 AC_DEFUN([gl_FUNC_FREXPL_WORKS],
 [
@@ -122,8 +109,7 @@ AC_DEFUN([gl_FUNC_FREXPL_WORKS],
   AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
   AC_CACHE_CHECK([whether frexpl works], [gl_cv_func_frexpl_works],
     [
-      AC_RUN_IFELSE(
-        [AC_LANG_SOURCE([[
+      AC_TRY_RUN([
 #include <float.h>
 #include <math.h>
 /* Override the values of <float.h>, like done in float.in.h.  */
@@ -131,28 +117,9 @@ AC_DEFUN([gl_FUNC_FREXPL_WORKS],
 # undef LDBL_MIN_EXP
 # define LDBL_MIN_EXP    (-16381)
 #endif
-#if defined __i386__ && defined __FreeBSD__
-# undef LDBL_MIN_EXP
-# define LDBL_MIN_EXP    (-16381)
-#endif
-#if (defined _ARCH_PPC || defined _POWER) && defined _AIX && (LDBL_MANT_DIG == 106) && defined __GNUC__
-# undef LDBL_MIN_EXP
-# define LDBL_MIN_EXP DBL_MIN_EXP
-#endif
-#if defined __sgi && (LDBL_MANT_DIG >= 106)
-# if defined __GNUC__
-#  undef LDBL_MIN_EXP
-#  define LDBL_MIN_EXP DBL_MIN_EXP
-# endif
-#endif
-extern
-#ifdef __cplusplus
-"C"
-#endif
-long double frexpl (long double, int *);
+extern long double frexpl (long double, int *);
 int main()
 {
-  int result = 0;
   volatile long double x;
   /* Test on finite numbers that fails on AIX 5.1.  */
   x = 16.0L;
@@ -160,9 +127,9 @@ int main()
     int exp = -9999;
     frexpl (x, &exp);
     if (exp != 5)
-      result |= 1;
+      return 1;
   }
-  /* Test on finite numbers that fails on Mac OS X 10.4, because its frexpl
+  /* Test on finite numbers that fails on MacOS X 10.4, because its frexpl
      function returns an invalid (incorrectly normalized) value: it returns
                y = { 0x3fe028f5, 0xc28f5c28, 0x3c9eb851, 0xeb851eb8 }
      but the correct result is
@@ -172,7 +139,7 @@ int main()
     int exp = -9999;
     long double y = frexpl (x, &exp);
     if (!(exp == 1 && y == 0.505L))
-      result |= 2;
+      return 1;
   }
   /* Test on large finite numbers.  This fails on BeOS at i = 16322, while
      LDBL_MAX_EXP = 16384.
@@ -185,10 +152,7 @@ int main()
         int exp = -9999;
         frexpl (x, &exp);
         if (exp != i)
-          {
-            result |= 4;
-            break;
-          }
+          return 1;
       }
   }
   /* Test on denormalized numbers.  */
@@ -201,9 +165,9 @@ int main()
         int exp;
         long double y = frexpl (x, &exp);
         /* On machines with IEEE854 arithmetic: x = 1.68105e-4932,
-           exp = -16382, y = 0.5.  On Mac OS X 10.5: exp = -16384, y = 0.5.  */
+           exp = -16382, y = 0.5.  On MacOS X 10.5: exp = -16384, y = 0.5.  */
         if (exp != LDBL_MIN_EXP - 1)
-          result |= 8;
+          return 1;
       }
   }
   /* Test on infinite numbers.  */
@@ -212,20 +176,15 @@ int main()
     int exp;
     long double y = frexpl (x, &exp);
     if (y != x)
-      result |= 16;
+      return 1;
   }
-  return result;
-}]])],
-        [gl_cv_func_frexpl_works=yes],
-        [gl_cv_func_frexpl_works=no],
-        [
-changequote(,)dnl
-         case "$host_os" in
-           aix | aix[3-6]* | beos* | darwin* | irix* | mingw* | pw*)
-              gl_cv_func_frexpl_works="guessing no";;
-           *) gl_cv_func_frexpl_works="guessing yes";;
-         esac
-changequote([,])dnl
-        ])
+  return 0;
+}], [gl_cv_func_frexpl_works=yes], [gl_cv_func_frexpl_works=no],
+      [case "$host_os" in
+         aix* | beos* | darwin* | irix* | mingw* | pw*)
+            gl_cv_func_frexpl_works="guessing no";;
+         *) gl_cv_func_frexpl_works="guessing yes";;
+       esac
+      ])
     ])
 ])