1 files changed, 55 insertions, 0 deletions
diff --git a/usr/src/lib/libm/common/m9x/fdimf.c b/usr/src/lib/libm/common/m9x/fdimf.c
new file mode 100644
index 0000000000..db8524946b
--- /dev/null
+++ b/usr/src/lib/libm/common/m9x/fdimf.c
@@ -0,0 +1,55 @@
+/*
+ * 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.
+ */
+
+#if defined(ELFOBJ)
+#pragma weak fdimf = __fdimf
+#endif
+
+#include "libm.h"	/* for islessequal macro */
+
+float
+__fdimf(float x, float y) {
+	/*
+	 * On SPARC v8plus/v9, this could be implemented as follows
+	 * (assuming %f0 = x, %f1 = y, return value left in %f0):
+	 *
+	 * fcmps	%fcc0,%f0,%f1
+	 * st		%g0,[scratch]	! use fzero instead of st/ld
+	 * ld		[scratch],%f2	! if VIS is available
+	 * fnegs	%f2,%f3
+	 * fmovsle	%fcc0,%f2,%f0
+	 * fmovsle	%fcc0,%f3,%f1
+	 * fsubs	%f0,%f1,%f0
+	 */
+	if (islessequal(x, y)) {
+		x = 0.0f;
+		y = -x;
+	}
+	return (x - y);
+}