[src/trunk]: src/lib/libc/arch/arm/gen Add __aeabi_[fd]cmpun for IEEE unorder...

[matt <matt%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/7f215c791024
branches:  trunk
changeset: 784338:7f215c791024
user:      matt <matt%NetBSD.org@localhost>
date:      Sat Jan 26 07:04:22 2013 +0000

description:
Add __aeabi_[fd]cmpun for IEEE unordered compares (requires by ARM RTABI).

diffstat:

 lib/libc/arch/arm/gen/__aeabi_dcmpun.c |  54 ++++++++++++++++++++++++++++++++++
 lib/libc/arch/arm/gen/__aeabi_fcmpun.c |  54 ++++++++++++++++++++++++++++++++++
 2 files changed, 108 insertions(+), 0 deletions(-)

diffs (116 lines):

diff -r fdbd90636fea -r 7f215c791024 lib/libc/arch/arm/gen/__aeabi_dcmpun.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/lib/libc/arch/arm/gen/__aeabi_dcmpun.c    Sat Jan 26 07:04:22 2013 +0000
@@ -0,0 +1,54 @@
+/*-
+ * Copyright (c) 2013 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Matt Thomas of 3am Software Foundry.
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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)
+__RCSID("$NetBSD: __aeabi_dcmpun.c,v 1.1 2013/01/26 07:04:22 matt Exp $");
+#endif /* LIBC_SCCS and not lint */
+
+#include <arm/aeabi.h>
+#include <arm/ieee.h>
+
+#include <math.h>
+
+/*
+ * result (1, 0) denotes (?, <=>) [2], use for C99 isunordered()
+ */
+
+int
+__aeabi_dcmpun(double x, double y)
+{
+       const union ieee_double_u ux = { .dblu_d = x };
+       const union ieee_double_u uy = { .dblu_d = y };
+
+       return (ux.dblu_dbl.dbl_exp == DBL_EXP_INFNAN
+               && (ux.dblu_dbl.dbl_frach|ux.dblu_dbl.dbl_fracl) != 0)
+           || (uy.dblu_dbl.dbl_exp == DBL_EXP_INFNAN
+               && (uy.dblu_dbl.dbl_frach|uy.dblu_dbl.dbl_fracl) != 0);
+}
diff -r fdbd90636fea -r 7f215c791024 lib/libc/arch/arm/gen/__aeabi_fcmpun.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/lib/libc/arch/arm/gen/__aeabi_fcmpun.c    Sat Jan 26 07:04:22 2013 +0000
@@ -0,0 +1,54 @@
+/*-
+ * Copyright (c) 2013 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Matt Thomas of 3am Software Foundry.
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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)
+__RCSID("$NetBSD: __aeabi_fcmpun.c,v 1.1 2013/01/26 07:04:22 matt Exp $");
+#endif /* LIBC_SCCS and not lint */
+
+#include <arm/aeabi.h>
+#include <arm/ieee.h>
+
+#include <math.h>
+
+/*
+ * result (1, 0) denotes (?, <=>) [2], use for C99 isunordered()
+ */
+
+int
+__aeabi_fcmpun(float x, float y)
+{
+       const union ieee_single_u ux = { .sngu_f = x };
+       const union ieee_single_u uy = { .sngu_f = y };
+
+       return (ux.sngu_sng.sng_exp == SNG_EXP_INFNAN
+               && ux.sngu_sng.sng_frac != 0)
+           || (uy.sngu_sng.sng_exp == SNG_EXP_INFNAN
+               && uy.sngu_sng.sng_frac != 0);
+}