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Diffstat (limited to 'usr/src/lib/libm/common/m9x/feround.c')
-rw-r--r--usr/src/lib/libm/common/m9x/feround.c83
1 files changed, 83 insertions, 0 deletions
diff --git a/usr/src/lib/libm/common/m9x/feround.c b/usr/src/lib/libm/common/m9x/feround.c
new file mode 100644
index 0000000000..5d56ae0c89
--- /dev/null
+++ b/usr/src/lib/libm/common/m9x/feround.c
@@ -0,0 +1,83 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+
+/*
+ * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
+ */
+/*
+ * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#pragma weak fegetround = __fegetround
+#pragma weak fesetround = __fesetround
+
+#pragma weak fegetround96 = __fegetround
+#pragma weak fesetround96 = __fesetround96
+
+#include "fenv_synonyms.h"
+#include <fenv.h>
+#include <ucontext.h>
+#include <thread.h>
+#include "fex_handler.h"
+#include "fenv_inlines.h"
+
+#if defined(__i386) && !defined(__amd64)
+#include <float.h>
+#endif
+
+int fegetround(void)
+{
+ unsigned long fsr;
+
+ __fenv_getfsr(&fsr);
+ return (int)__fenv_get_rd(fsr);
+}
+
+int fesetround(int r)
+{
+ unsigned long fsr;
+
+ if (r & ~3)
+ return -1;
+ __fenv_getfsr(&fsr);
+ __fenv_set_rd(fsr, r);
+ __fenv_setfsr(&fsr);
+#if defined(__i386) && !defined(__amd64)
+ FLT_ROUNDS = (0x2D >> (r << 1)) & 3; /* 0->1, 1->3, 2->2, 3->0 */
+#endif
+ return 0;
+}
+
+int fesetround96(int r)
+{
+ unsigned long fsr;
+
+ if (r & ~3)
+ return 0;
+ __fenv_getfsr(&fsr);
+ __fenv_set_rd(fsr, r);
+ __fenv_setfsr(&fsr);
+#if defined(__i386) && !defined(__amd64)
+ FLT_ROUNDS = (0x2D >> (r << 1)) & 3; /* 0->1, 1->3, 2->2, 3->0 */
+#endif
+ return 1;
+}