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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_lgammaf.c
parent7d58530341304d403a6626d7f7a1913165fe2f32 (diff)
downloadglibc-0ecb606cb6cf65de1d9fc8a919bceb4be476c602.tar.gz
2.5-18.1
Diffstat (limited to 'math/w_lgammaf.c')
-rw-r--r--math/w_lgammaf.c53
1 files changed, 53 insertions, 0 deletions
diff --git a/math/w_lgammaf.c b/math/w_lgammaf.c
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+/* w_lgammaf.c -- float version of w_lgamma.c.
+ * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@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: w_lgammaf.c,v 1.3 1995/05/10 20:49:30 jtc Exp $";
+#endif
+
+#include <math.h>
+#include "math_private.h"
+
+#ifdef __STDC__
+ float __lgammaf(float x)
+#else
+ float __lgammaf(x)
+ float x;
+#endif
+{
+#ifdef _IEEE_LIBM
+ return __ieee754_lgammaf_r(x,&signgam);
+#else
+ float y;
+ int local_signgam = 0;
+ y = __ieee754_lgammaf_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(!__finitef(y)&&__finitef(x)) {
+ if(__floorf(x)==x&&x<=(float)0.0)
+ /* lgamma pole */
+ return (float)__kernel_standard((double)x,(double)x,115);
+ else
+ /* lgamma overflow */
+ return (float)__kernel_standard((double)x,(double)x,114);
+ } else
+ return y;
+#endif
+}
+weak_alias (__lgammaf, lgammaf)
+strong_alias (__lgammaf, __gammaf)
+weak_alias (__gammaf, gammaf)