Provide a sparc64 version of sqrtl(3) that simply calls _Qp_sqrt.

The generic sqrtl(3) is not nearly accurate enough for quad-precision
floating point.

2 files changed, 31 insertions, 1 deletions

diff --git a/lib/libm/Makefile b/lib/libm/Makefile
index 60cd86fe9f0..3303c247ba5 100644
--- a/lib/libm/Makefile
+++ b/lib/libm/Makefile
@@ -1,4 +1,4 @@
-#  $OpenBSD: Makefile,v 1.106 2014/03/18 22:36:30 miod Exp $
+#  $OpenBSD: Makefile,v 1.107 2014/09/12 22:07:24 kettenis Exp $
 #  $NetBSD: Makefile,v 1.28 1995/11/20 22:06:19 jtc Exp $
 #
 #  @(#)Makefile 5.1beta 93/09/24 
@@ -67,6 +67,7 @@ ARCH_SRCS = e_sqrt.c e_sqrtf.c s_fabsf.c
 .PATH:	${.CURDIR}/arch/sparc
 .elif (${MACHINE_ARCH} == "sparc64")
 .PATH:	${.CURDIR}/arch/sparc64
+ARCH_SRCS = e_sqrtl.c
 .elif (${MACHINE_ARCH} == "vax")
 .PATH:	${.CURDIR}/arch/vax
 NOIEEE_ARCH = n_argred.S n_infnan.S n_sqrt.S
diff --git a/lib/libm/arch/sparc64/e_sqrtl.c b/lib/libm/arch/sparc64/e_sqrtl.c
new file mode 100644
index 00000000000..95a2a4f043f
--- /dev/null
+++ b/lib/libm/arch/sparc64/e_sqrtl.c
@@ -0,0 +1,29 @@
+/*	$OpenBSD: e_sqrtl.c,v 1.1 2014/09/12 22:07:24 kettenis Exp $	*/
+/*
+ * Copyright (c) 2014 Mark Kettenis
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <math.h>
+
+extern void _Qp_sqrt(long double *, long double *);
+
+long double
+sqrtl(long double x)
+{
+	long double y;
+
+	_Qp_sqrt(&y, &x);
+	return y;
+}