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, 2 insertions, 41 deletions

diff --git a/sysdeps/ieee754/ldbl-128ibm/ieee754.h b/sysdeps/ieee754/ldbl-128ibm/ieee754.h
index 9e94f53b04..0778b1fed5 100644
--- a/sysdeps/ieee754/ldbl-128ibm/ieee754.h
+++ b/sysdeps/ieee754/ldbl-128ibm/ieee754.h
@@ -179,49 +179,10 @@ union ieee854_long_double
 
 union ibm_extended_long_double
   {
-    long double d;
-    double dd[2];
-
-    /* This is the IBM extended format long double.  */
-    struct
-      { /* Big endian.  There is no other.  */
-
-	unsigned int negative:1;
-	unsigned int exponent:11;
-	/* Together Mantissa0-3 comprise the mantissa.  */
-	unsigned int mantissa0:20;
-	unsigned int mantissa1:32;
-
-	unsigned int negative2:1;
-	unsigned int exponent2:11;
-	/* There is an implied 1 here?  */
-	/* Together these comprise the mantissa.  */
-	unsigned int mantissa2:20;
-	unsigned int mantissa3:32;
-      } ieee;
-
-    /* This format makes it easier to see if a NaN is a signalling NaN.  */
-    struct
-      { /* Big endian.  There is no other.  */
-
-	unsigned int negative:1;
-	unsigned int exponent:11;
-	unsigned int quiet_nan:1;
-	/* Together Mantissa0-3 comprise the mantissa.  */
-	unsigned int mantissa0:19;
-	unsigned int mantissa1:32;
-
-	unsigned int negative2:1;
-	unsigned int exponent2:11;
-	/* There is an implied 1 here?  */
-	/* Together these comprise the mantissa.  */
-	unsigned int mantissa2:20;
-	unsigned int mantissa3:32;
-      } ieee_nan;
+    long double ld;
+    union ieee754_double d[2];
    };
 
-#define IBM_EXTENDED_LONG_DOUBLE_BIAS 0x3ff /* Added to exponent.  */
-
 __END_DECLS
 
 #endif /* ieee754.h */