Update.

1 files changed, 47 insertions, 0 deletions

diff --git a/sysdeps/ieee754/ldbl-96/s_logbl.c b/sysdeps/ieee754/ldbl-96/s_logbl.c
new file mode 100644
index 0000000000..2cd9d105f8
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-96/s_logbl.c
@@ -0,0 +1,47 @@
+/* s_logbl.c -- long double version of s_logb.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 logbl(x)
+ * IEEE 754 logb. Included to pass IEEE test suite. Not recommend.
+ * Use ilogb instead.
+ */
+
+#include "math.h"
+#include "math_private.h"
+
+#ifdef __STDC__
+	long double __logbl(long double x)
+#else
+	long double __logbl(x)
+	long double x;
+#endif
+{
+	int32_t es,lx,ix;
+	GET_LDOUBLE_WORDS(es,ix,lx,x);
+	es &= 0x7fff;				/* exponent */
+	if((es|ix|lx)==0) return -1.0/fabs(x);
+	if(es==0x7fff) return x*x;
+	if(es==0) 			/* IEEE 754 logb */
+		return -16382.0;
+	else
+		return (long double) (es-0x3fff);
+}
+weak_alias (__logbl, logbl)