IBM long double mechanical changes to support little-endian

http://sourceware.org/ml/libc-alpha/2013-07/msg00001.html

This patch starts the process of supporting powerpc64 little-endian
long double in glibc.  IBM long double is an array of two ieee
doubles, so making union ibm_extended_long_double reflect this fact is
the correct way to access fields of the doubles.

	* sysdeps/ieee754/ldbl-128ibm/ieee754.h
	(union ibm_extended_long_double): Define as an array of ieee754_double.
	(IBM_EXTENDED_LONG_DOUBLE_BIAS): Delete.
	* sysdeps/ieee754/ldbl-128ibm/printf_fphex.c: Update all references
	to ibm_extended_long_double and IBM_EXTENDED_LONG_DOUBLE_BIAS.
	* sysdeps/ieee754/ldbl-128ibm/e_exp10l.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_expl.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/ldbl2mpn.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/math_ldbl.h: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/mpn2ldbl.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_nearbyintl.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/strtold_l.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/x2y2m1l.c: Likewise.

1 files changed, 3 insertions, 3 deletions

diff --git a/sysdeps/ieee754/ldbl-128ibm/e_exp10l.c b/sysdeps/ieee754/ldbl-128ibm/e_exp10l.c
index 1eaf2fe398..49121ca315 100644
--- a/sysdeps/ieee754/ldbl-128ibm/e_exp10l.c
+++ b/sysdeps/ieee754/ldbl-128ibm/e_exp10l.c
@@ -36,9 +36,9 @@ __ieee754_exp10l (long double arg)
   else if (arg > LDBL_MAX_10_EXP + 1)
     return LDBL_MAX * LDBL_MAX;
 
-  u.d = arg;
-  arg_high = u.dd[0];
-  arg_low = u.dd[1];
+  u.ld = arg;
+  arg_high = u.d[0].d;
+  arg_low = u.d[1].d;
   exp_high = arg_high * log10_high;
   exp_low = arg_high * log10_low + arg_low * M_LN10l;
   return __ieee754_expl (exp_high) * __ieee754_expl (exp_low);