SH: No FE_UPWARD, FE_DOWNWARD.

git-mirror · Jun 9, 2012 · 99ff6e5 · 99ff6e5
1 parent 366af02
commit 99ff6e5
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Showing 4 changed files with 14 additions and 11 deletions.
diff --git a/ChangeLog b/ChangeLog
@@ -1,5 +1,10 @@
 2012-06-09  Thomas Schwinge  <thomas@codesourcery.com>
 
+	* sysdeps/sh/sh4/fpu/bits/fenv.h (__FE_UNDEFINED): Define.
+	(FE_UPWARD, FE_DOWNWARD): Don't define.
+	* sysdeps/sh/sh4/fpu/fegetround.c (fegetround): Adapt to that.
+	* sysdeps/sh/sh4/fpu/fesetround.c (fesetround): Likewise.
+
 	* sysdeps/sh/sh4/fpu/fegetenv.c (fegetenv): Do not re-write fpscr after
 	reading it.
 	* sysdeps/sh/sh4/fpu/fegetexcept.c (fegetexcept): Likewise.

diff --git a/sysdeps/sh/sh4/fpu/bits/fenv.h b/sysdeps/sh/sh4/fpu/bits/fenv.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1999, 2000 Free Software Foundation, Inc.
+/* Copyright (C) 1999-2012 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -39,19 +39,17 @@ enum
 #define FE_ALL_EXCEPT \
 	(FE_INEXACT | FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID)
 
-/* The SH FPU supports all of the four defined rounding modes.  We
-   use again the bit positions in the FPU control word as the values
-   for the appropriate macros.  */
+/* The SH FPU supports two of the four defined rounding modes: round to nearest
+   and round to zero.  We use again the bit positions in the FPU control word
+   as the values for the appropriate macros.  */
 enum
   {
+    __FE_UNDEFINED = -1,
+
     FE_TONEAREST = 0x0,
 #define FE_TONEAREST	FE_TONEAREST
     FE_TOWARDZERO = 0x1,
 #define FE_TOWARDZERO	FE_TOWARDZERO
-    FE_UPWARD = 0x2,
-#define FE_UPWARD	FE_UPWARD
-    FE_DOWNWARD = 0x3
-#define FE_DOWNWARD	FE_DOWNWARD
   };
 
 

diff --git a/sysdeps/sh/sh4/fpu/fegetround.c b/sysdeps/sh/sh4/fpu/fegetround.c
@@ -28,5 +28,5 @@ fegetround (void)
   /* Get control word.  */
   _FPU_GETCW (cw);
 
-  return cw & 0x3;
+  return cw & 0x1;
 }
diff --git a/sysdeps/sh/sh4/fpu/fesetround.c b/sysdeps/sh/sh4/fpu/fesetround.c
@@ -25,15 +25,15 @@ fesetround (int round)
 {
   fpu_control_t cw;
 
-  if ((round & ~0x3) != 0)
+  if ((round & ~0x1) != 0)
     /* ROUND is no valid rounding mode.  */
     return 1;
 
   /* Get current state.  */
   _FPU_GETCW (cw);
 
   /* Set rounding bits.  */
-  cw &= ~0x3;
+  cw &= ~0x1;
   cw |= round;
   /* Set new state.  */
   _FPU_SETCW (cw);