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authorUlrich Drepper <drepper@redhat.com>1999-07-14 00:54:57 +0000
committerUlrich Drepper <drepper@redhat.com>1999-07-14 00:54:57 +0000
commitabfbdde177c3a7155070dda1b2cdc8292054cc26 (patch)
treee021306b596381fbf8311d2b7eb294e918ff17c8 /math/w_lgammaf.c
parent86421aa57ecfd70963ae66848bd6a6dd3b8e0fe6 (diff)
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Update.
Diffstat (limited to 'math/w_lgammaf.c')
-rw-r--r--math/w_lgammaf.c53
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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;
+ y = __ieee754_lgammaf_r(x,&local_signgam);
+ if (_LIB_VERSION != _ISOC_)
+ /* ISO C 9x 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)