1 files changed, 59 insertions, 0 deletions
diff --git a/ports/sysdeps/am33/fpu/fesetenv.c b/ports/sysdeps/am33/fpu/fesetenv.c
new file mode 100644
index 0000000000..110c49c9f8
--- /dev/null
+++ b/ports/sysdeps/am33/fpu/fesetenv.c
@@ -0,0 +1,59 @@
+/* Install given floating-point environment.
+   Copyright (C) 1998, 1999, 2000, 2002, 2004 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Alexandre Oliva <aoliva@redhat.com>
+   based on corresponding file in the MIPS port.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fenv.h>
+#include <fpu_control.h>
+#include <shlib-compat.h>
+
+int
+__fesetenv (const fenv_t *envp)
+{
+  fpu_control_t cw;
+
+  /* We want to clear all EF bits for the default end IEEE.  */
+
+  if (envp == FE_DFL_ENV)
+    _FPU_SETFCW (_FPU_DEFAULT|FE_ALL_EXCEPT);
+  else if (envp == FE_NOMASK_ENV)
+    _FPU_SETFCW (_FPU_IEEE|FE_ALL_EXCEPT);
+  else
+    {
+      fpu_control_t temp;
+
+      _FPU_GETCW (temp);
+      cw = *envp;
+
+      /* If EF bits are cleared and the user requests them to be set,
+	 we have to fail, because there's no way to do it.  */
+      if (~temp & cw & FE_ALL_EXCEPT)
+	return -1;
+
+      /* We clear EF bits by storing a 1 in them, so flip the
+	 FE_ALL_EXCEPT bits.  */
+      cw = (cw & ~FE_ALL_EXCEPT) | (~cw & FE_ALL_EXCEPT);
+      _FPU_SETFCW (cw);
+    }
+
+  /* Success.  */
+  return 0;
+}
+
+libm_hidden_ver (__fesetenv, fesetenv)
+versioned_symbol (libm, __fesetenv, fesetenv, GLIBC_2_2);