[svn-r27742] Merge of r26623 from the trunk

Remove the LDOUBLE_TO_LLONG_ACCURATE macro/define, it's working around
bugs in older SGI, HP/UX, MacOSX and Windows .NET 2003 compilers.

Tested on: jam (minor change that has baked in the trunk for months)

1 files changed, 1 insertions, 91 deletions

diff --git a/configure b/configure
index 854ecec..4a32637 100755
--- a/configure
+++ b/configure
@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.ac Id: configure.ac 27738 2015-09-10 04:20:13Z derobins .
+# From configure.ac Id: configure.ac 27741 2015-09-10 10:38:47Z derobins .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.69 for HDF5 1.8.16-snap16.
 #
@@ -27471,96 +27471,6 @@ fi
 
 ## ----------------------------------------------------------------------
 ## Set the flag to indicate that the machine can accurately convert
-## 'long double' to '(unsigned) long long' values.  (This flag should be set for
-## all machines, except for Mac OS 10.4 and SGI IRIX64 6.5.  When the bit sequence
-## of long double is 0x4351ccf385ebc8a0bfcc2a3c..., the values of (unsigned)long long
-## start to go wrong on these two machines.  Adjusting it higher to
-## 0x4351ccf385ebc8a0dfcc... or 0x4351ccf385ebc8a0ffcc... will make the converted
-## values wildly wrong.  This test detects this wrong behavior and disable the test.
-##
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if correctly converting long double to (unsigned) long long values" >&5
-$as_echo_n "checking if correctly converting long double to (unsigned) long long values... " >&6; }
-
-if test ${ac_cv_sizeof_long_double} = 0; then
-   hdf5_cv_ldouble_to_llong_accurate=${hdf5_cv_ldouble_to_llong_accurate=no}
-else
-   if ${hdf5_cv_ldouble_to_llong_accurate+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if test "$cross_compiling" = yes; then :
-  { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
-as_fn_error $? "cannot run test program while cross compiling
-See \`config.log' for more details" "$LINENO" 5; }
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-        int main(void)
-        {
-            long double         ld = 20041683600089727.779961L;
-            long long           ll;
-            unsigned long long  ull;
-            unsigned char       s[16];
-            int                 ret = 0;
-
-            if(sizeof(long double) == 16) {
-                /*make sure the long double type is the same as the failing type
-                 *which has 16 bytes in size and 11 bits of exponent.  If it is,
-                 *the bit sequence should be like below.  It's not
-                 *a decent way to check but this info isn't available. */
-                memcpy(s, &ld, 16);
-                if(s[0]==0x43 && s[1]==0x51 && s[2]==0xcc && s[3]==0xf3 &&
-                    s[4]==0x85 && s[5]==0xeb && s[6]==0xc8 && s[7]==0xa0 &&
-                    s[8]==0xbf && s[9]==0xcc && s[10]==0x2a && s[11]==0x3c) {
-
-                    /*slightly adjust the bit sequence (s[8]=0xdf).  The converted
-                     *values will go wild on Mac OS 10.4 and IRIX64 6.5.*/
-                    s[0]=0x43; s[1]=0x51; s[2]=0xcc; s[3]=0xf3;
-                    s[4]=0x85; s[5]=0xeb; s[6]=0xc8; s[7]=0xa0;
-                    s[8]=0xdf; s[9]=0xcc; s[10]=0x2a; s[11]=0x3c;
-                    s[12]=0x3d; s[13]=0x85; s[14]=0x56; s[15]=0x20;
-
-                    memcpy(&ld, s, 16);
-                    ll = (long long)ld;
-                    ull = (unsigned long long)ld;
-
-                    if(ll != 20041683600089728 || ull != 20041683600089728)
-                        ret = 1;
-                }
-            }
-    done:
-            exit(ret);
-        }
-
-_ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
-  hdf5_cv_ldouble_to_llong_accurate=yes
-else
-  hdf5_cv_ldouble_to_llong_accurate=no
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
-fi
-
-fi
-
-if test ${hdf5_cv_ldouble_to_llong_accurate} = "yes"; then
-
-$as_echo "#define LDOUBLE_TO_LLONG_ACCURATE 1" >>confdefs.h
-
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
-## ----------------------------------------------------------------------
-## Set the flag to indicate that the machine can accurately convert
 ## '(unsigned) long long' to 'long double' values.  (This flag should be set for
 ## all machines, except for Mac OS 10.4, when the bit sequences are 003fff...,
 ## 007fff..., 00ffff..., 01ffff..., ..., 7fffff..., the converted values are twice