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Diffstat (limited to 'math/w_lgammal.c')
-rw-r--r--math/w_lgammal.c58
1 files changed, 58 insertions, 0 deletions
diff --git a/math/w_lgammal.c b/math/w_lgammal.c
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--- /dev/null
+++ b/math/w_lgammal.c
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+/* w_lgammal.c -- long double version of w_lgamma.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 lgammal(long double x)
+ * Return the logarithm of the Gamma function of x.
+ *
+ * Method: call __ieee754_lgammal_r
+ */
+
+#include <math.h>
+#include "math_private.h"
+
+#ifdef __STDC__
+ long double __lgammal(long double x)
+#else
+ long double __lgammal(x)
+ long double x;
+#endif
+{
+#ifdef _IEEE_LIBM
+ return __ieee754_lgammal_r(x,&signgam);
+#else
+ long double y;
+ int local_signgam = 0;
+ y = __ieee754_lgammal_r(x,&local_signgam);
+ if (_LIB_VERSION != _ISOC_)
+ /* ISO C99 does not define the global variable. */
+ signgam = local_signgam;
+ if(_LIB_VERSION == _IEEE_) return y;
+ if(!__finitel(y)&&__finitel(x)) {
+ if(__floorl(x)==x&&x<=0.0)
+ return __kernel_standard(x,x,215); /* lgamma pole */
+ else
+ return __kernel_standard(x,x,214); /* lgamma overflow */
+ } else
+ return y;
+#endif
+}
+weak_alias (__lgammal, lgammal)
+strong_alias (__lgammal, __gammal)
+weak_alias (__gammal, gammal)