1 files changed, 69 insertions, 0 deletions
diff --git a/usr/src/lib/libm/common/R/erff.c b/usr/src/lib/libm/common/R/erff.c
new file mode 100644
index 0000000000..ae58e3477e
--- /dev/null
+++ b/usr/src/lib/libm/common/R/erff.c
@@ -0,0 +1,69 @@
+/*
+ * 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 2005 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#pragma weak erff = __erff
+#pragma weak erfcf = __erfcf
+
+#include "libm.h"
+
+#if defined(__i386) && !defined(__amd64)
+extern int __swapRP(int);
+#endif
+
+float
+erff(float x) {
+	int	ix;
+
+	ix = *(int *)&x & ~0x80000000;
+	if (ix > 0x7f800000)	/* x is NaN */
+		return (x * x);
+	return ((float)erf((double)x));
+}
+
+float
+erfcf(float x) {
+	float	f;
+	int	ix;
+#if defined(__i386) && !defined(__amd64)
+	int	rp;
+#endif
+
+	ix = *(int *)&x & ~0x80000000;
+	if (ix > 0x7f800000)	/* x is NaN */
+		return (x * x);
+
+#if defined(__i386) && !defined(__amd64)
+	rp = __swapRP(fp_extended);
+#endif
+	f = (float)erfc((double)x);
+#if defined(__i386) && !defined(__amd64)
+	if (rp != fp_extended)
+		(void) __swapRP(rp);
+#endif
+	return (f);
+}