about summary refs log tree commit diff
path: root/REORG.TODO/math/setfpucw.c
diff options
context:
space:
mode:
Diffstat (limited to 'REORG.TODO/math/setfpucw.c')
-rw-r--r--REORG.TODO/math/setfpucw.c36
1 files changed, 36 insertions, 0 deletions
diff --git a/REORG.TODO/math/setfpucw.c b/REORG.TODO/math/setfpucw.c
new file mode 100644
index 0000000000..10dd94fac7
--- /dev/null
+++ b/REORG.TODO/math/setfpucw.c
@@ -0,0 +1,36 @@
+/* Set the FPU control word.
+   Copyright (C) 1996-2017 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
+   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 <math.h>
+#include <fpu_control.h>
+
+void
+__setfpucw (fpu_control_t set)
+{
+  fpu_control_t cw;
+
+  /* Fetch the current control word.  */
+  _FPU_GETCW (cw);
+
+  /* Preserve the reserved bits, and set the rest as the user
+     specified (or the default, if the user gave zero).  */
+  cw &= _FPU_RESERVED;
+  cw |= set & ~_FPU_RESERVED;
+
+  _FPU_SETCW (cw);
+}