Replace seven nominally MD implementations of frexp() that are broken

for subnormals with one implementation that works.

2 files changed, 1 insertions, 79 deletions

diff --git a/lib/libc/sparc64/gen/Makefile.inc b/lib/libc/sparc64/gen/Makefile.inc
index 789f95ac374a..022a4a3ef625 100644
--- a/lib/libc/sparc64/gen/Makefile.inc
+++ b/lib/libc/sparc64/gen/Makefile.inc
@@ -2,5 +2,5 @@
 
 SRCS+=	_ctx_start.S _setjmp.S fabs.S fixunsdfsi.S flt_rounds.c fpgetmask.c \
 	fpgetround.c fpgetsticky.c fpsetmask.c fpsetround.c fpsetsticky.c \
-	frexp.c infinity.c ldexp.c makecontext.c modf.S \
+	infinity.c ldexp.c makecontext.c modf.S \
 	signalcontext.c setjmp.S sigsetjmp.S
diff --git a/lib/libc/sparc64/gen/frexp.c b/lib/libc/sparc64/gen/frexp.c
deleted file mode 100644
index e31a1c8bd3cf..000000000000
--- a/lib/libc/sparc64/gen/frexp.c
+++ /dev/null
@@ -1,78 +0,0 @@
-/*
- * Copyright (c) 1992, 1993
- *	The Regents of the University of California.  All rights reserved.
- *
- * This software was developed by the Computer Systems Engineering group
- * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
- * contributed to Berkeley.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *	This product includes software developed by the University of
- *	California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#if defined(LIBC_SCCS) && !defined(lint)
-static char rcsid[] = "$OpenBSD: frexp.c,v 1.2 2001/09/10 22:37:06 millert Exp $";
-#endif /* LIBC_SCCS and not lint */
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-#include <sys/types.h>
-#include <machine/ieee.h>
-
-/*
- * Split the given value into a fraction in the range [0.5, 1.0) and
- * an exponent, such that frac * (2^exp) == value.  If value is 0,
- * return 0.
- */
-double
-frexp(value, eptr)
-	double value;
-	int *eptr;
-{
-	union {
-		double v;
-		struct ieee_double s;
-	} u;
-
-	if (value) {
-		/*
-		 * Fractions in [0.5..1.0) have an exponent of 2^-1.
-		 * Leave Inf and NaN alone, however.
-		 * WHAT ABOUT DENORMS?
-		 */
-		u.v = value;
-		if (u.s.dbl_exp != DBL_EXP_INFNAN) {
-			*eptr = u.s.dbl_exp - (DBL_EXP_BIAS - 1);
-			u.s.dbl_exp = DBL_EXP_BIAS - 1;
-		}
-		return (u.v);
-	} else {
-		*eptr = 0;
-		return ((double)0);
-	}
-}