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authorJakub Jelinek <jakub@redhat.com>2007-07-12 18:26:36 +0000
committerJakub Jelinek <jakub@redhat.com>2007-07-12 18:26:36 +0000
commit0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (patch)
tree2ea1f8305970753e4a657acb2ccc15ca3eec8e2c /math/w_tgammal.c
parent7d58530341304d403a6626d7f7a1913165fe2f32 (diff)
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2.5-18.1
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diff --git a/math/w_tgammal.c b/math/w_tgammal.c
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+/* w_gammal.c -- long double version of w_gamma.c.
+ * Conversion to long double by Ulrich Drepper,
+ * Cygnus Support, drepper@cygnus.com.
+ */
+
+/*
+ * ====================================================
+ * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
+ *
+ * Developed at SunPro, a Sun Microsystems, Inc. business.
+ * Permission to use, copy, modify, and distribute this
+ * software is freely granted, provided that this notice
+ * is preserved.
+ * ====================================================
+ */
+
+#if defined(LIBM_SCCS) && !defined(lint)
+static char rcsid[] = "$NetBSD: $";
+#endif
+
+/* long double gammal(double x)
+ * Return the Gamma function of x.
+ */
+
+#include <math.h>
+#include "math_private.h"
+
+#ifdef __STDC__
+	long double __tgammal(long double x)
+#else
+	long double __tgammal(x)
+	long double x;
+#endif
+{
+        long double y;
+	int local_signgam;
+	y = __ieee754_gammal_r(x,&local_signgam);
+	if (local_signgam < 0) y = -y;
+#ifdef _IEEE_LIBM
+	return y;
+#else
+	if(_LIB_VERSION == _IEEE_) return y;
+
+	if(!__finitel(y)&&__finitel(x)) {
+	  if(x==0.0)
+	    return __kernel_standard(x,x,250); /* tgamma pole */
+	  else if(__floorl(x)==x&&x<0.0)
+	    return __kernel_standard(x,x,241); /* tgamma domain */
+	  else
+	    return __kernel_standard(x,x,240); /* tgamma overflow */
+	}
+	return y;
+#endif
+}
+weak_alias (__tgammal, tgammal)