From b4594fd38896c2ffb37c430cb680d9a4a2c6ad0d Mon Sep 17 00:00:00 2001
From: miod <>
Date: Thu, 15 Jan 2004 18:53:24 +0000
Subject: Add a new regression test, which checks that we handle fp overflow
 correctly, and produce a correct infinity.

Currently, this tests fails on 68060 (060sp is to blame) and 88100 processors,
and maybe more.
---
 src/regress/lib/libc/ieeefp/Makefile            |  4 ++--
 src/regress/lib/libc/ieeefp/infinity/Makefile   |  9 +++++++
 src/regress/lib/libc/ieeefp/infinity/infinity.c | 32 +++++++++++++++++++++++++
 3 files changed, 43 insertions(+), 2 deletions(-)
 create mode 100644 src/regress/lib/libc/ieeefp/infinity/Makefile
 create mode 100644 src/regress/lib/libc/ieeefp/infinity/infinity.c

(limited to 'src')

diff --git a/src/regress/lib/libc/ieeefp/Makefile b/src/regress/lib/libc/ieeefp/Makefile
index f9a6035fa9..89ff51a2e7 100644
--- a/src/regress/lib/libc/ieeefp/Makefile
+++ b/src/regress/lib/libc/ieeefp/Makefile
@@ -1,7 +1,7 @@
-#	$OpenBSD: Makefile,v 1.5 2002/02/23 01:25:11 art Exp $
+#	$OpenBSD: Makefile,v 1.6 2004/01/15 18:53:23 miod Exp $
 #	$NetBSD: Makefile,v 1.5 1996/04/09 16:54:18 phil Exp $
 
-SUBDIR+= except inf round
+SUBDIR+= except inf infinity round
 
 install:
 
diff --git a/src/regress/lib/libc/ieeefp/infinity/Makefile b/src/regress/lib/libc/ieeefp/infinity/Makefile
new file mode 100644
index 0000000000..a593fcf37d
--- /dev/null
+++ b/src/regress/lib/libc/ieeefp/infinity/Makefile
@@ -0,0 +1,9 @@
+#	$OpenBSD: Makefile,v 1.1 2004/01/15 18:53:24 miod Exp $
+
+PROG=	infinity
+SRCS=	infinity.c
+
+DPADD+=	${LIBM}
+LDADD+=	-lm
+
+.include <bsd.regress.mk>
diff --git a/src/regress/lib/libc/ieeefp/infinity/infinity.c b/src/regress/lib/libc/ieeefp/infinity/infinity.c
new file mode 100644
index 0000000000..0f60b4762b
--- /dev/null
+++ b/src/regress/lib/libc/ieeefp/infinity/infinity.c
@@ -0,0 +1,32 @@
+/*	$OpenBSD: infinity.c,v 1.1 2004/01/15 18:53:24 miod Exp $	*/
+/*
+ * Written by Miodrag Vallat, 2004 - Public Domain
+ * Inspired from Perl's t/op/arith test #134
+ */
+
+#include <math.h>
+#include <signal.h>
+
+void
+sigfpe(int signum)
+{
+	/* looks like we don't handle fp overflow correctly... */
+	_exit(1);
+}
+
+int
+main(int argc, char *argv[])
+{
+	double d, u;
+	int i;
+
+	signal(SIGFPE, sigfpe);
+
+	d = 1.0;
+	for (i = 2000; i != 0; i--) {
+		d = d * 2.0;
+	}
+
+	/* result should be _positive_ infinity */
+	return ((isinf(d) && copysign(1.0, d) > 0.0) ? 0 : 1);
+}
-- 
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