1 files changed, 52 insertions, 0 deletions
diff --git a/usr/src/lib/libm/common/C/gamma.c b/usr/src/lib/libm/common/C/gamma.c
new file mode 100644
index 0000000000..3e8073946c
--- /dev/null
+++ b/usr/src/lib/libm/common/C/gamma.c
@@ -0,0 +1,52 @@
+/*
+ * 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 gamma = __gamma
+
+#include "libm.h"
+
+extern int signgam;
+
+double
+gamma(double x) {
+	double	g;
+
+	if (!finite(x))
+		return (x * x);
+
+	g = rint(x);
+	if (x == g && x <= 0.0) {
+		signgam = 1;
+		return (_SVID_libm_err(x, x, 41));
+	}
+
+	g = __k_lgamma(x, &signgam);
+	if (!finite(g))
+	    g = _SVID_libm_err(x, x, 40);
+	return (g);
+}