Finish ilogb changes

	[BZ# 6794]
	* sysdeps/ieee754/ldbl-96/s_ilogbl.c: Moved to ...
	* sysdeps/ieee754/ldbl-96/e_ilogbl.c: ... here.
	Rename __ilogbl to __ieee754_ilogbl and remove weak_alias.

	* sysdeps/ieee754/ldbl-128/s_ilogbl.c: Moved to ...
	* sysdeps/ieee754/ldbl-128/e_ilogbl.c: ... here.
	Rename __ilogbl to __ieee754_ilogbl and remove weak_alias.

	* sysdeps/ieee754/ldbl-64-128/s_ilogbl.c: Moved to ...
	* sysdeps/ieee754/ldbl-64-128/e_ilogbl.c: ... here.

	* sysdeps/sparc/sparc64/soft-fp/s_ilogbl.c: Moved to ...
	* sysdeps/sparc/sparc64/soft-fp/e_ilogbl.c: ... here.
	Rename __ilogbl to __ieee754_ilogbl and remove weak_alias.

1 files changed, 59 insertions, 0 deletions

diff --git a/sysdeps/ieee754/ldbl-96/e_ilogbl.c b/sysdeps/ieee754/ldbl-96/e_ilogbl.c
new file mode 100644
index 0000000000..0c7d9d5440
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-96/e_ilogbl.c
@@ -0,0 +1,59 @@
+/* s_ilogbl.c -- long double version of s_ilogb.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
+
+/* ilogbl(long double x)
+ * return the binary exponent of non-zero x
+ * ilogbl(0) = FP_ILOGB0
+ * ilogbl(NaN) = FP_ILOGBNAN (no signal is raised)
+ * ilogbl(+-Inf) = INT_MAX (no signal is raised)
+ */
+
+#include <limits.h>
+#include <math.h>
+#include <math_private.h>
+
+int __ieee754_ilogbl (long double x)
+{
+	int32_t es,hx,lx,ix;
+
+	GET_LDOUBLE_EXP(es,x);
+	es &= 0x7fff;
+	if(es==0) {
+	    GET_LDOUBLE_WORDS(es,hx,lx,x);
+	    if((hx|lx)==0)
+		return FP_ILOGB0;	/* ilogbl(0) = FP_ILOGB0 */
+	    else			/* subnormal x */
+		if(hx==0) {
+		    for (ix = -16415; lx>0; lx<<=1) ix -=1;
+		} else {
+		    for (ix = -16383; hx>0; hx<<=1) ix -=1;
+		}
+	    return ix;
+	}
+	else if (es<0x7fff) return es-0x3fff;
+	else if (FP_ILOGBNAN != INT_MAX)
+	{
+	    GET_LDOUBLE_WORDS(es,hx,lx,x);
+	    if (((hx & 0x7fffffff)|lx) == 0)
+	      /* ISO C99 requires ilogbl(+-Inf) == INT_MAX.  */
+	      return INT_MAX;
+	}
+	return FP_ILOGBNAN;
+}