1 files changed, 55 insertions, 0 deletions
diff --git a/lib/libc/alpha/gen/fpsetround.c b/lib/libc/alpha/gen/fpsetround.c
new file mode 100644
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+++ b/lib/libc/alpha/gen/fpsetround.c
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+/*	$NetBSD: fpsetround.c,v 1.1 1995/04/29 05:09:57 cgd Exp $	*/
+
+/*
+ * Copyright (c) 1995 Christopher G. Demetriou
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Christopher G. Demetriou
+ *	for the NetBSD Project.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/types.h>
+#include <ieeefp.h>
+#include <machine/fpu.h>
+
+fp_rnd
+fpsetround(rnd_dir)
+	fp_rnd rnd_dir;
+{
+	double fpcrval;
+	u_int64_t old, new;
+
+	GET_FPCR(fpcrval);
+	old = *(u_int64_t *)&fpcrval;
+
+	new = old & (~FPCR_DYN_MASK);
+	new |= ((long) rnd_dir << FPCR_DYN_SHIFT) & FPCR_DYN_MASK;
+
+	*(u_int64_t *)&fpcrval = new;
+	SET_FPCR(fpcrval);
+
+	return ((old & FPCR_DYN_MASK) >> FPCR_DYN_SHIFT);
+}