fesetround implementation for PowerPC.

sysdeps/mips/fpu/fesetround.c

@@ -0,0 +1,43 @@
+/* Set current rounding direction.
+   Copyright (C) 1998 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Andreas Jaeger <aj@arthur.rhein-neckar.de>, 1998.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <fenv.h>
+#include <fpu_control.h>
+
+int
+fesetround (int round)
+{
+  unsigned short int cw;
+
+  if ((round & ~0x3) != 0)
+    /* ROUND is no valid rounding mode.  */
+    return 0;
+
+  /* Get current state.  */
+  _FPU_GETCW (cw);
+
+  /* Set rounding bits.  */
+  cw &= ~0x3;
+  cw |= round;
+  /* Set new state.  */
+  _FPU_SETCW (cw);
+
+  return 1;
+}