From: Bruno Haible <bruno@clisp.org>
Subject: [PATCH] float: Fix LDBL_MAX value on Linux/PowerPC.
Origin: upstream, http://git.savannah.gnu.org/gitweb/?p=gnulib.git;a=commitdiff;h=c65d65a81e9d66960ae7ce5abe5069d5b7338ed2
X-Debian-version: 1:3.2-5

--- a/gnulib-tests/float.c
+++ b/gnulib-tests/float.c
@@ -22,7 +22,7 @@
 /* Specification.  */
 #include <float.h>
 
-#if (defined _ARCH_PPC || defined _POWER) && defined _AIX && (LDBL_MANT_DIG == 106) && defined __GNUC__
+#if (defined _ARCH_PPC || defined _POWER) && (defined _AIX || defined __linux__) && (LDBL_MANT_DIG == 106) && defined __GNUC__
 const union gl_long_double_union gl_LDBL_MAX =
   { { DBL_MAX, DBL_MAX / (double)134217728UL / (double)134217728UL } };
 #elif defined __i386__
--- a/gnulib-tests/float.in.h
+++ b/gnulib-tests/float.in.h
@@ -111,7 +111,8 @@
 #endif
 
 /* On AIX 7.1 with gcc 4.2, the values of LDBL_MIN_EXP, LDBL_MIN, LDBL_MAX are
-   wrong.  */
+   wrong.
+   On Linux/PowerPC with gcc 4.4, the value of LDBL_MAX is wrong.  */
 #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
@@ -119,6 +120,8 @@
 # define LDBL_MIN_10_EXP DBL_MIN_10_EXP
 # undef LDBL_MIN
 # define LDBL_MIN 2.22507385850720138309023271733240406422e-308L /* DBL_MIN = 2^-1022 */
+#endif
+#if (defined _ARCH_PPC || defined _POWER) && (defined _AIX || defined __linux__) && (LDBL_MANT_DIG == 106) && defined __GNUC__
 # undef LDBL_MAX
 /* LDBL_MAX is represented as { 0x7FEFFFFF, 0xFFFFFFFF, 0x7C8FFFFF, 0xFFFFFFFF }.
    It is not easy to define:
--- a/m4/float_h.m4
+++ b/m4/float_h.m4
@@ -1,4 +1,4 @@
-# float_h.m4 serial 7
+# float_h.m4 serial 8
 dnl Copyright (C) 2007, 2009-2011 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -33,9 +33,16 @@
           ;;
       esac
       ;;
+    linux*)
+      case "$host_cpu" in
+        powerpc*)
+          FLOAT_H=float.h
+          ;;
+      esac
+      ;;
   esac
   case "$host_os" in
-    aix* | freebsd*)
+    aix* | freebsd* | linux*)
       if test -n "$FLOAT_H"; then
         REPLACE_FLOAT_LDBL=1
       fi
--- a/configure
+++ b/configure
@@ -25693,9 +25693,16 @@
           ;;
       esac
       ;;
+    linux*)
+      case "$host_cpu" in
+        powerpc*)
+          FLOAT_H=float.h
+          ;;
+      esac
+      ;;
   esac
   case "$host_os" in
-    aix* | freebsd*)
+    aix* | freebsd* | linux*)
       if test -n "$FLOAT_H"; then
         REPLACE_FLOAT_LDBL=1
       fi
