693 Opensource replacement of sunwlibm

Reviewed by: Igor Kozhukhov ikozhukhov@gmail.com
Reviewed by: Keith M Wesolowski <keith.wesolowski@joyent.com>
Reviewed by: Richard Lowe <richlowe@richlowe.net>
Approved by: Dan McDonald <danmcd@omniti.com>

1 files changed, 54 insertions, 0 deletions

diff --git a/usr/src/lib/libmvec/common/__vc_exp.c b/usr/src/lib/libmvec/common/__vc_exp.c
new file mode 100644
index 0000000000..8fc8a77e4e
--- /dev/null
+++ b/usr/src/lib/libmvec/common/__vc_exp.c
@@ -0,0 +1,54 @@
+/*
+ * 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.
+ */
+
+#ifdef __RESTRICT
+#define restrict _Restrict
+#else
+#define restrict
+#endif
+
+extern void __vexpf(int, float *, int, float *, int);
+extern void __vsincosf(int, float *, int, float *, int, float *, int);
+
+void
+__vc_exp(int n, float * restrict x, int stridex, float * restrict y,
+	int stridey, float * restrict tmp)
+{
+	int		i, j;
+
+	stridex <<= 1;
+	stridey <<= 1;
+	__vexpf(n, x, stridex, tmp, 1);
+	__vsincosf(n, x + 1, stridex, y + 1, stridey, y, stridey);
+	for (i = j = 0; i < n; i++, j += stridey)
+	{
+		y[j] *= tmp[i];
+		y[j+1] *= tmp[i];
+	}
+}