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

for subnormals with one implementation that works.

2 files changed, 1 insertions, 69 deletions

diff --git a/lib/libc/amd64/gen/Makefile.inc b/lib/libc/amd64/gen/Makefile.inc
index 2caa178..9f559e6 100644
--- a/lib/libc/amd64/gen/Makefile.inc
+++ b/lib/libc/amd64/gen/Makefile.inc
@@ -3,7 +3,6 @@
 
 SRCS+=	_setjmp.S rfork_thread.S setjmp.S sigsetjmp.S \
 	fabs.S modf.S \
-	frexp.c infinity.c ldexp.c \
-	makecontext.c signalcontext.c \
+	infinity.c ldexp.c makecontext.c signalcontext.c \
 	fpgetmask.c fpsetmask.c fpgetprec.c fpsetprec.c \
 	fpgetround.c fpsetround.c fpgetsticky.c fpsetsticky.c
diff --git a/lib/libc/amd64/gen/frexp.c b/lib/libc/amd64/gen/frexp.c
deleted file mode 100644
index 37f6a57..0000000
--- a/lib/libc/amd64/gen/frexp.c
+++ /dev/null
@@ -1,67 +0,0 @@
-/*-
- * Copyright (c) 1991, 1993
- *	The Regents of the University of California.  All rights reserved.
- *
- * 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 sccsid[] = "@(#)frexp.c	8.1 (Berkeley) 6/4/93";
-#endif /* LIBC_SCCS and not lint */
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-#include <sys/types.h>
-#include <math.h>
-
-double
-frexp(value, eptr)
-	double value;
-	int *eptr;
-{
-	union {
-                double v;
-                struct {
-			u_int u_mant2 : 32;
-			u_int u_mant1 : 20;
-			u_int   u_exp : 11;
-                        u_int  u_sign :  1;
-                } s;
-        } u;
-
-	if (value) {
-		u.v = value;
-		*eptr = u.s.u_exp - 1022;
-		u.s.u_exp = 1022;
-		return(u.v);
-	} else {
-		*eptr = 0;
-		return((double)0);
-	}
-}