1 files changed, 48 insertions, 0 deletions
diff --git a/usr/src/lib/libm/common/R/significandf.c b/usr/src/lib/libm/common/R/significandf.c
new file mode 100644
index 0000000000..1e9c81f7ec
--- /dev/null
+++ b/usr/src/lib/libm/common/R/significandf.c
@@ -0,0 +1,48 @@
+/*
+ * 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 significandf = __significandf
+#endif
+
+#include "libm.h"
+
+float
+significandf(float x) {
+	int ix = *(int *) &x & ~0x80000000;
+
+	if (ix == 0 || ix >= 0x7f800000)	/* 0/+-Inf/NaN */
+#if defined(FPADD_TRAPS_INCOMPLETE_ON_NAN)
+		return (ix > 0x7f800000 ? x * x : x);
+#else
+		return (x + x);
+#endif
+	else
+		return (scalbnf(x, -ilogbf(x)));
+}