# commit 4a28b3ca4bc52d9a3ac0d9edb53d3de510e1b77c
# Author: Anton Blanchard <anton@au1.ibm.com>
# Date:   Sat Aug 17 18:28:55 2013 +0930
# 
#     PowerPC floating point little-endian [8 of 15]
#     http://sourceware.org/ml/libc-alpha/2013-07/msg00199.html
#     
#     Corrects floating-point environment code for little-endian.
#     
#         * sysdeps/powerpc/fpu/fenv_libc.h (fenv_union_t): Replace int
#         array with long long.
#         * sysdeps/powerpc/fpu/e_sqrt.c (__slow_ieee754_sqrt): Adjust.
#         * sysdeps/powerpc/fpu/e_sqrtf.c (__slow_ieee754_sqrtf): Adjust.
#         * sysdeps/powerpc/fpu/fclrexcpt.c (__feclearexcept): Adjust.
#         * sysdeps/powerpc/fpu/fedisblxcpt.c (fedisableexcept): Adjust.
#         * sysdeps/powerpc/fpu/feenablxcpt.c (feenableexcept): Adjust.
#         * sysdeps/powerpc/fpu/fegetexcept.c (__fegetexcept): Adjust.
#         * sysdeps/powerpc/fpu/feholdexcpt.c (feholdexcept): Adjust.
#         * sysdeps/powerpc/fpu/fesetenv.c (__fesetenv): Adjust.
#         * sysdeps/powerpc/fpu/feupdateenv.c (__feupdateenv): Adjust.
#         * sysdeps/powerpc/fpu/fgetexcptflg.c (__fegetexceptflag): Adjust.
#         * sysdeps/powerpc/fpu/fraiseexcpt.c (__feraiseexcept): Adjust.
#         * sysdeps/powerpc/fpu/fsetexcptflg.c (__fesetexceptflag): Adjust.
#         * sysdeps/powerpc/fpu/ftestexcept.c (fetestexcept): Adjust.
# 
---
# sysdeps/powerpc/fpu/e_sqrt.c       |    2 +-
# sysdeps/powerpc/fpu/e_sqrtf.c      |    2 +-
# sysdeps/powerpc/fpu/fclrexcpt.c    |    4 ++--
# sysdeps/powerpc/fpu/fedisblxcpt.c  |   10 +++++-----
# sysdeps/powerpc/fpu/feenablxcpt.c  |   10 +++++-----
# sysdeps/powerpc/fpu/fegetexcept.c  |   10 +++++-----
# sysdeps/powerpc/fpu/feholdexcpt.c  |    5 ++---
# sysdeps/powerpc/fpu/fenv_libc.h    |    2 +-
# sysdeps/powerpc/fpu/fesetenv.c     |    4 ++--
# sysdeps/powerpc/fpu/feupdateenv.c  |    6 +++---
# sysdeps/powerpc/fpu/fgetexcptflg.c |    2 +-
# sysdeps/powerpc/fpu/fraiseexcpt.c  |   12 ++++++------
# sysdeps/powerpc/fpu/fsetexcptflg.c |    8 ++++----
# sysdeps/powerpc/fpu/ftestexcept.c  |    2 +-
# 14 files changed, 39 insertions(+), 40 deletions(-)
#
--- a/sysdeps/powerpc/fpu/e_sqrt.c
+++ b/sysdeps/powerpc/fpu/e_sqrt.c
@@ -145,7 +145,7 @@
       feraiseexcept (FE_INVALID_SQRT);
 
       fenv_union_t u = { .fenv = fegetenv_register () };
-      if ((u.l[1] & FE_INVALID) == 0)
+      if ((u.l & FE_INVALID) == 0)
 #endif
 	feraiseexcept (FE_INVALID);
       x = a_nan.value;
--- a/sysdeps/powerpc/fpu/e_sqrtf.c
+++ b/sysdeps/powerpc/fpu/e_sqrtf.c
@@ -121,7 +121,7 @@
       feraiseexcept (FE_INVALID_SQRT);
 
       fenv_union_t u = { .fenv = fegetenv_register () };
-      if ((u.l[1] & FE_INVALID) == 0)
+      if ((u.l & FE_INVALID) == 0)
 #endif
 	feraiseexcept (FE_INVALID);
       x = a_nan.value;
--- a/sysdeps/powerpc/fpu/fclrexcpt.c
+++ b/sysdeps/powerpc/fpu/fclrexcpt.c
@@ -28,8 +28,8 @@
   u.fenv = fegetenv_register ();
 
   /* Clear the relevant bits.  */
-  u.l[1] = u.l[1] & ~((-(excepts >> (31 - FPSCR_VX) & 1) & FE_ALL_INVALID)
-		      | (excepts & FPSCR_STICKY_BITS));
+  u.l = u.l & ~((-(excepts >> (31 - FPSCR_VX) & 1) & FE_ALL_INVALID)
+		| (excepts & FPSCR_STICKY_BITS));
 
   /* Put the new state in effect.  */
   fesetenv_register (u.fenv);
--- a/sysdeps/powerpc/fpu/fedisblxcpt.c
+++ b/sysdeps/powerpc/fpu/fedisblxcpt.c
@@ -32,15 +32,15 @@
 
   fe.fenv = fegetenv_register ();
   if (excepts & FE_INEXACT)
-    fe.l[1] &= ~(1 << (31 - FPSCR_XE));
+    fe.l &= ~(1 << (31 - FPSCR_XE));
   if (excepts & FE_DIVBYZERO)
-    fe.l[1] &= ~(1 << (31 - FPSCR_ZE));
+    fe.l &= ~(1 << (31 - FPSCR_ZE));
   if (excepts & FE_UNDERFLOW)
-    fe.l[1] &= ~(1 << (31 - FPSCR_UE));
+    fe.l &= ~(1 << (31 - FPSCR_UE));
   if (excepts & FE_OVERFLOW)
-    fe.l[1] &= ~(1 << (31 - FPSCR_OE));
+    fe.l &= ~(1 << (31 - FPSCR_OE));
   if (excepts & FE_INVALID)
-    fe.l[1] &= ~(1 << (31 - FPSCR_VE));
+    fe.l &= ~(1 << (31 - FPSCR_VE));
   fesetenv_register (fe.fenv);
 
   new = __fegetexcept ();
--- a/sysdeps/powerpc/fpu/feenablxcpt.c
+++ b/sysdeps/powerpc/fpu/feenablxcpt.c
@@ -32,15 +32,15 @@
 
   fe.fenv = fegetenv_register ();
   if (excepts & FE_INEXACT)
-    fe.l[1] |= (1 << (31 - FPSCR_XE));
+    fe.l |= (1 << (31 - FPSCR_XE));
   if (excepts & FE_DIVBYZERO)
-    fe.l[1] |= (1 << (31 - FPSCR_ZE));
+    fe.l |= (1 << (31 - FPSCR_ZE));
   if (excepts & FE_UNDERFLOW)
-    fe.l[1] |= (1 << (31 - FPSCR_UE));
+    fe.l |= (1 << (31 - FPSCR_UE));
   if (excepts & FE_OVERFLOW)
-    fe.l[1] |= (1 << (31 - FPSCR_OE));
+    fe.l |= (1 << (31 - FPSCR_OE));
   if (excepts & FE_INVALID)
-    fe.l[1] |= (1 << (31 - FPSCR_VE));
+    fe.l |= (1 << (31 - FPSCR_VE));
   fesetenv_register (fe.fenv);
 
   new = __fegetexcept ();
--- a/sysdeps/powerpc/fpu/fegetexcept.c
+++ b/sysdeps/powerpc/fpu/fegetexcept.c
@@ -27,15 +27,15 @@
 
   fe.fenv = fegetenv_register ();
 
-  if (fe.l[1] & (1 << (31 - FPSCR_XE)))
+  if (fe.l & (1 << (31 - FPSCR_XE)))
       result |= FE_INEXACT;
-  if (fe.l[1] & (1 << (31 - FPSCR_ZE)))
+  if (fe.l & (1 << (31 - FPSCR_ZE)))
       result |= FE_DIVBYZERO;
-  if (fe.l[1] & (1 << (31 - FPSCR_UE)))
+  if (fe.l & (1 << (31 - FPSCR_UE)))
       result |= FE_UNDERFLOW;
-  if (fe.l[1] & (1 << (31 - FPSCR_OE)))
+  if (fe.l & (1 << (31 - FPSCR_OE)))
       result |= FE_OVERFLOW;
-  if (fe.l[1] & (1 << (31 - FPSCR_VE)))
+  if (fe.l & (1 << (31 - FPSCR_VE)))
       result |= FE_INVALID;
 
   return result;
--- a/sysdeps/powerpc/fpu/feholdexcpt.c
+++ b/sysdeps/powerpc/fpu/feholdexcpt.c
@@ -30,13 +30,12 @@
 
   /* Clear everything except for the rounding modes and non-IEEE arithmetic
      flag.  */
-  new.l[1] = old.l[1] & 7;
-  new.l[0] = old.l[0];
+  new.l = old.l & 0xffffffff00000007LL;
   
   /* If the old env had any eabled exceptions, then mask SIGFPE in the
      MSR FE0/FE1 bits.  This may allow the FPU to run faster because it
      always takes the default action and can not generate SIGFPE. */
-  if ((old.l[1] & _FPU_MASK_ALL) != 0)
+  if ((old.l & _FPU_MASK_ALL) != 0)
     (void)__fe_mask_env ();
 
   /* Put the new state in effect.  */
--- a/sysdeps/powerpc/fpu/fenv_libc.h
+++ b/sysdeps/powerpc/fpu/fenv_libc.h
@@ -69,7 +69,7 @@
 typedef union
 {
   fenv_t fenv;
-  unsigned int l[2];
+  unsigned long long l;
 } fenv_union_t;
 
 
--- a/sysdeps/powerpc/fpu/fesetenv.c
+++ b/sysdeps/powerpc/fpu/fesetenv.c
@@ -36,14 +36,14 @@
      exceptions, then unmask SIGFPE in the MSR FE0/FE1 bits.  This will put the
      hardware into "precise mode" and may cause the FPU to run slower on some
      hardware.  */
-  if ((old.l[1] & _FPU_MASK_ALL) == 0 && (new.l[1] & _FPU_MASK_ALL) != 0)
+  if ((old.l & _FPU_MASK_ALL) == 0 && (new.l & _FPU_MASK_ALL) != 0)
     (void)__fe_nomask_env ();
   
   /* If the old env had any enabled exceptions and the new env has no enabled
      exceptions, then mask SIGFPE in the MSR FE0/FE1 bits.  This may allow the
      FPU to run faster because it always takes the default action and can not 
      generate SIGFPE. */
-  if ((old.l[1] & _FPU_MASK_ALL) != 0 && (new.l[1] & _FPU_MASK_ALL) == 0)
+  if ((old.l & _FPU_MASK_ALL) != 0 && (new.l & _FPU_MASK_ALL) == 0)
     (void)__fe_mask_env ();
     
   fesetenv_register (*envp);
--- a/sysdeps/powerpc/fpu/feupdateenv.c
+++ b/sysdeps/powerpc/fpu/feupdateenv.c
@@ -36,20 +36,20 @@
   /* Restore rounding mode and exception enable from *envp and merge
      exceptions.  Leave fraction rounded/inexact and FP result/CC bits
      unchanged.  */
-  new.l[1] = (old.l[1] & 0x1FFFFF00) | (new.l[1] & 0x1FF80FFF);
+  new.l = (old.l & 0xffffffff1fffff00LL) | (new.l & 0x1ff80fff);
   
   /* If the old env has no eabled exceptions and the new env has any enabled
      exceptions, then unmask SIGFPE in the MSR FE0/FE1 bits.  This will put
      the hardware into "precise mode" and may cause the FPU to run slower on
      some hardware.  */
-  if ((old.l[1] & _FPU_MASK_ALL) == 0 && (new.l[1] & _FPU_MASK_ALL) != 0)
+  if ((old.l & _FPU_MASK_ALL) == 0 && (new.l & _FPU_MASK_ALL) != 0)
     (void)__fe_nomask_env ();
   
   /* If the old env had any eabled exceptions and the new env has no enabled
      exceptions, then mask SIGFPE in the MSR FE0/FE1 bits.  This may allow the
      FPU to run faster because it always takes the default action and can not 
      generate SIGFPE. */
-  if ((old.l[1] & _FPU_MASK_ALL) != 0 && (new.l[1] & _FPU_MASK_ALL) == 0)
+  if ((old.l & _FPU_MASK_ALL) != 0 && (new.l & _FPU_MASK_ALL) == 0)
     (void)__fe_mask_env ();
 
   /* Atomically enable and raise (if appropriate) exceptions set in `new'. */
--- a/sysdeps/powerpc/fpu/fgetexcptflg.c
+++ b/sysdeps/powerpc/fpu/fgetexcptflg.c
@@ -28,7 +28,7 @@
   u.fenv = fegetenv_register ();
 
   /* Return (all of) it.  */
-  *flagp = u.l[1] & excepts & FE_ALL_EXCEPT;
+  *flagp = u.l & excepts & FE_ALL_EXCEPT;
 
   /* Success.  */
   return 0;
--- a/sysdeps/powerpc/fpu/fraiseexcpt.c
+++ b/sysdeps/powerpc/fpu/fraiseexcpt.c
@@ -34,11 +34,11 @@
   u.fenv = fegetenv_register ();
 
   /* Add the exceptions */
-  u.l[1] = (u.l[1]
-	    | (excepts & FPSCR_STICKY_BITS)
-	    /* Turn FE_INVALID into FE_INVALID_SOFTWARE.  */
-	    | (excepts >> ((31 - FPSCR_VX) - (31 - FPSCR_VXSOFT))
-	       & FE_INVALID_SOFTWARE));
+  u.l = (u.l
+	 | (excepts & FPSCR_STICKY_BITS)
+	 /* Turn FE_INVALID into FE_INVALID_SOFTWARE.  */
+	 | (excepts >> ((31 - FPSCR_VX) - (31 - FPSCR_VXSOFT))
+	    & FE_INVALID_SOFTWARE));
 
   /* Store the new status word (along with the rest of the environment),
      triggering any appropriate exceptions.  */
@@ -50,7 +50,7 @@
 	 don't have FE_INVALID_SOFTWARE implemented.  Detect this
 	 case and raise FE_INVALID_SNAN instead.  */
       u.fenv = fegetenv_register ();
-      if ((u.l[1] & FE_INVALID) == 0)
+      if ((u.l & FE_INVALID) == 0)
 	set_fpscr_bit (FPSCR_VXSNAN);
     }
 
--- a/sysdeps/powerpc/fpu/fsetexcptflg.c
+++ b/sysdeps/powerpc/fpu/fsetexcptflg.c
@@ -32,10 +32,10 @@
   flag = *flagp & excepts;
 
   /* Replace the exception status */
-  u.l[1] = ((u.l[1] & ~(FPSCR_STICKY_BITS & excepts))
-	    | (flag & FPSCR_STICKY_BITS)
-	    | (flag >> ((31 - FPSCR_VX) - (31 - FPSCR_VXSOFT))
-	       & FE_INVALID_SOFTWARE));
+  u.l = ((u.l & ~(FPSCR_STICKY_BITS & excepts))
+	 | (flag & FPSCR_STICKY_BITS)
+	 | (flag >> ((31 - FPSCR_VX) - (31 - FPSCR_VXSOFT))
+	    & FE_INVALID_SOFTWARE));
 
   /* Store the new status word (along with the rest of the environment).
      This may cause floating-point exceptions if the restored state
--- a/sysdeps/powerpc/fpu/ftestexcept.c
+++ b/sysdeps/powerpc/fpu/ftestexcept.c
@@ -28,6 +28,6 @@
 
   /* The FE_INVALID bit is dealt with correctly by the hardware, so we can
      just:  */
-  return u.l[1] & excepts;
+  return u.l & excepts;
 }
 libm_hidden_def (fetestexcept)
