maint: update copyright

[gnulib.git] / m4 / isfinite.m4

diff --git a/m4/isfinite.m4 b/m4/isfinite.m4
index cc65da1..53ad909 100644 (file)
--- a/m4/isfinite.m4
+++ b/m4/isfinite.m4
@@ -1,5 +1,5 @@
-# isfinite.m4 serial 9
-dnl Copyright (C) 2007-2011 Free Software Foundation, Inc.
+# isfinite.m4 serial 13
+dnl Copyright (C) 2007-2014 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.
@@ -9,9 +9,10 @@ AC_DEFUN([gl_ISFINITE],
   AC_REQUIRE([gl_MATH_H_DEFAULTS])
   dnl Persuade glibc <math.h> to declare isfinite.
   AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
-  AC_CHECK_DECLS([isfinite], , , [#include <math.h>])
+  AC_CHECK_DECLS([isfinite], , , [[#include <math.h>]])
   if test "$ac_cv_have_decl_isfinite" = yes; then
-    gl_CHECK_MATH_LIB([ISFINITE_LIBM], [x = isfinite (x);])
+    gl_CHECK_MATH_LIB([ISFINITE_LIBM],
+     [x = isfinite (x) + isfinite ((float) x);])
     if test "$ISFINITE_LIBM" != missing; then
       dnl Test whether isfinite() on 'long double' works.
       gl_ISFINITEL_WORKS
@@ -44,6 +45,7 @@ AC_DEFUN([gl_ISFINITEL_WORKS],
 [
   AC_REQUIRE([AC_PROG_CC])
   AC_REQUIRE([gl_BIGENDIAN])
+  AC_REQUIRE([gl_LONG_DOUBLE_VS_DOUBLE])
   AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
   AC_CACHE_CHECK([whether isfinite(long double) works], [gl_cv_func_isfinitel_works],
     [
@@ -86,7 +88,7 @@ int main ()
       result |= 1;
   }
 
-#if ((defined __ia64 && LDBL_MANT_DIG == 64) || (defined __x86_64__ || defined __amd64__) || (defined __i386 || defined __i386__ || defined _I386 || defined _M_IX86 || defined _X86_))
+#if ((defined __ia64 && LDBL_MANT_DIG == 64) || (defined __x86_64__ || defined __amd64__) || (defined __i386 || defined __i386__ || defined _I386 || defined _M_IX86 || defined _X86_)) && !HAVE_SAME_LONG_DOUBLE_AS_DOUBLE
 /* Representation of an 80-bit 'long double' as an initializer for a sequence
    of 'unsigned int' words.  */
 # ifdef WORDS_BIGENDIAN
@@ -147,7 +149,7 @@ int main ()
     static memory_long_double x =
       { LDBL80_WORDS (0x0000, 0x83333333, 0x00000000) };
     if (isfinite (x.value))
-      return |= 64;
+      result |= 64;
   }
 #endif
 
@@ -155,8 +157,8 @@ int main ()
 }]])], [gl_cv_func_isfinitel_works=yes], [gl_cv_func_isfinitel_works=no],
       [case "$host_cpu" in
                                # Guess no on ia64, x86_64, i386.
-         ia64 | x86_64 | i*86) gl_cv_func_isnanl_works="guessing no";;
-         *)                    gl_cv_func_isnanl_works="guessing yes";;
+         ia64 | x86_64 | i*86) gl_cv_func_isfinitel_works="guessing no";;
+         *)                    gl_cv_func_isfinitel_works="guessing yes";;
        esac
       ])
     ])