summaryrefslogtreecommitdiff
path: root/sysdeps/generic/w_tgammal.c
diff options
context:
space:
mode:
authorUlrich Drepper <drepper@redhat.com>2004-12-22 20:10:10 +0000
committerUlrich Drepper <drepper@redhat.com>2004-12-22 20:10:10 +0000
commita334319f6530564d22e775935d9c91663623a1b4 (patch)
treeb5877475619e4c938e98757d518bb1e9cbead751 /sysdeps/generic/w_tgammal.c
parent0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (diff)
downloadglibc-a334319f6530564d22e775935d9c91663623a1b4.tar.gz
(CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.
Diffstat (limited to 'sysdeps/generic/w_tgammal.c')
-rw-r--r--sysdeps/generic/w_tgammal.c55
1 files changed, 55 insertions, 0 deletions
diff --git a/sysdeps/generic/w_tgammal.c b/sysdeps/generic/w_tgammal.c
new file mode 100644
index 0000000000..793fa17ac1
--- /dev/null
+++ b/sysdeps/generic/w_tgammal.c
@@ -0,0 +1,55 @@
+/* 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)