Module Name: src
Committed By: mrg
Date: Mon Jul 4 11:22:39 UTC 2011
Modified Files:
src/common/lib/libc/quad: quad.h
src/lib/libc/quad: Makefile.inc
Added Files:
src/lib/libc/quad: floatundisf.c
Log Message:
add support for __floatunsisf().
To generate a diff of this commit:
cvs rdiff -u -r1.2 -r1.3 src/common/lib/libc/quad/quad.h
cvs rdiff -u -r1.12 -r1.13 src/lib/libc/quad/Makefile.inc
cvs rdiff -u -r0 -r1.1 src/lib/libc/quad/floatundisf.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/common/lib/libc/quad/quad.h
diff -u src/common/lib/libc/quad/quad.h:1.2 src/common/lib/libc/quad/quad.h:1.3
--- src/common/lib/libc/quad/quad.h:1.2 Mon Jul 4 06:23:50 2011
+++ src/common/lib/libc/quad/quad.h Mon Jul 4 11:22:39 2011
@@ -1,4 +1,4 @@
-/* $NetBSD: quad.h,v 1.2 2011/07/04 06:23:50 matt Exp $ */
+/* $NetBSD: quad.h,v 1.3 2011/07/04 11:22:39 mrg Exp $ */
/*-
* Copyright (c) 1992, 1993
@@ -123,6 +123,7 @@
double __floatdidf __P((quad_t));
float __floatdisf __P((quad_t));
double __floatundidf __P((u_quad_t));
+float __floatundisf __P((u_quad_t));
quad_t __iordi3 __P((quad_t, quad_t));
quad_t __lshldi3 __P((quad_t, qshift_t));
quad_t __lshrdi3 __P((quad_t, qshift_t));
Index: src/lib/libc/quad/Makefile.inc
diff -u src/lib/libc/quad/Makefile.inc:1.12 src/lib/libc/quad/Makefile.inc:1.13
--- src/lib/libc/quad/Makefile.inc:1.12 Mon Jul 4 06:23:50 2011
+++ src/lib/libc/quad/Makefile.inc Mon Jul 4 11:22:39 2011
@@ -1,9 +1,9 @@
-# $NetBSD: Makefile.inc,v 1.12 2011/07/04 06:23:50 matt Exp $
+# $NetBSD: Makefile.inc,v 1.13 2011/07/04 11:22:39 mrg Exp $
# @(#)Makefile.inc 8.1 (Berkeley) 6/4/93
# Quad support
SRCS.quad= cmpdi2.c divdi3.c fixdfdi.c fixsfdi.c fixunsdfdi.c \
- fixunssfdi.c floatdidf.c floatdisf.c floatundidf.c \
+ fixunssfdi.c floatdidf.c floatdisf.c floatundisf.c floatundidf.c \
moddi3.c muldi3.c negdi2.c qdivrem.c \
ucmpdi2.c udivdi3.c umoddi3.c
Added files:
Index: src/lib/libc/quad/floatundisf.c
diff -u /dev/null src/lib/libc/quad/floatundisf.c:1.1
--- /dev/null Mon Jul 4 11:22:39 2011
+++ src/lib/libc/quad/floatundisf.c Mon Jul 4 11:22:39 2011
@@ -0,0 +1,71 @@
+/* $NetBSD: floatundisf.c,v 1.1 2011/07/04 11:22:39 mrg Exp $ */
+
+/*-
+ * 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. 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.
+ */
+
+#include <sys/cdefs.h>
+#if defined(LIBC_SCCS) && !defined(lint)
+#if 0
+static char sccsid[] = "@(#)floatdisf.c 8.1 (Berkeley) 6/4/93";
+#else
+__RCSID("$NetBSD: floatundisf.c,v 1.1 2011/07/04 11:22:39 mrg Exp $");
+#endif
+#endif /* LIBC_SCCS and not lint */
+
+#include "quad.h"
+
+/*
+ * Convert (unsigned) quad to float.
+ */
+float
+__floatundisf(u_quad_t x)
+{
+ float f;
+ union uu u;
+
+ u.q = x;
+
+ /*
+ * Now u.ul[H] has the factor of 2^32 (or whatever) and u.ul[L]
+ * has the units. Ideally we could just set f, add INT_BITS to
+ * its exponent, and then add the units, but this is portable
+ * code and does not know how to get at an exponent. Machine-
+ * specific code may be able to do this more efficiently.
+ *
+ * Using double here may be excessive paranoia.
+ */
+ f = (double)u.ul[H] * (((int)1 << (INT_BITS - 2)) * 4.0);
+ f += u.ul[L];
+
+ return f;
+}
