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+/* file: lgamma.c */
+
+// Copyright (c) 2002 Intel Corporation
+// All rights reserved.
+//
+// Contributed 2002 by the Intel Numerics Group, Intel Corporation
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//
+// * Redistributions in binary form must reproduce the above copyright
+// notice, this list of conditions and the following disclaimer in the
+// documentation and/or other materials provided with the distribution.
+//
+// * The name of Intel Corporation may not be used to endorse or promote
+// products derived from this software without specific prior written
+// permission.
+
+// WARRANTY DISCLAIMER
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL INTEL OR ITS
+// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY OR TORT (INCLUDING
+// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// Intel Corporation is the author of this code, and requests that all
+// problem reports or change requests be submitted to it directly at
+// http://www.intel.com/software/products/opensource/libraries/num.htm.
+//
+//
+
+// History
+//==============================================================
+// 02/04/02: Initial version
+// 02/22/02: Removed lgammaf/gammaf
+//
+/*
+//   FUNCTIONS:    double  lgamma(double x)
+//                 double  gamma(double x)
+//                 Natural logarithm of GAMMA function
+*/
+
+#include "libm_support.h"
+
+
+extern double __libm_lgamma(double /*x*/, int* /*signgam*/, int /*signgamsz*/);
+
+
+double __ieee754_lgamma(double x)
+{
+#ifdef __POSIX__
+    extern int    signgam;
+#else
+    int    signgam;
+#endif
+    return __libm_lgamma(x, &signgam, sizeof(signgam));
+}
+weak_alias(__ieee754_lgamma, lgamma)
+
+double __ieee754_gamma(double x)
+{
+#ifdef __POSIX__
+    extern int    signgam;
+#else
+    int    signgam;
+#endif
+    return __libm_lgamma(x, &signgam, sizeof(signgam));
+}
+weak_alias(__ieee754_gamma, gamma)