From a4f79641824cbf9f60ca9d1168d1fcc46717a82a Mon Sep 17 00:00:00 2001
From: deraadt <>
Date: Wed, 18 Oct 1995 08:49:34 +0000
Subject: initial import of NetBSD tree

---
 src/regress/lib/libc/ieeefp/except/Makefile | 12 ++++
 src/regress/lib/libc/ieeefp/except/except.c | 87 +++++++++++++++++++++++++++++
 2 files changed, 99 insertions(+)
 create mode 100644 src/regress/lib/libc/ieeefp/except/Makefile
 create mode 100644 src/regress/lib/libc/ieeefp/except/except.c

(limited to 'src/regress/lib/libc/ieeefp/except')

diff --git a/src/regress/lib/libc/ieeefp/except/Makefile b/src/regress/lib/libc/ieeefp/except/Makefile
new file mode 100644
index 0000000000..91f24f15f6
--- /dev/null
+++ b/src/regress/lib/libc/ieeefp/except/Makefile
@@ -0,0 +1,12 @@
+#	$NetBSD: Makefile,v 1.1 1995/04/26 00:27:25 jtc Exp $
+
+PROG=	except
+SRCS=	except.c
+NOMAN=
+
+install:
+
+regress: ${PROG}
+	./${PROG}
+
+.include <bsd.prog.mk>
diff --git a/src/regress/lib/libc/ieeefp/except/except.c b/src/regress/lib/libc/ieeefp/except/except.c
new file mode 100644
index 0000000000..0ffdcdd468
--- /dev/null
+++ b/src/regress/lib/libc/ieeefp/except/except.c
@@ -0,0 +1,87 @@
+#include <stdio.h>
+#include <signal.h>
+#include <assert.h>
+#include <ieeefp.h>
+#include <float.h>
+
+void sigfpe();
+volatile sig_atomic_t signal_cought;
+
+static volatile const double one  = 1.0;
+static volatile const double zero = 0.0;
+static volatile const double huge = DBL_MAX;
+static volatile const double tiny = DBL_MIN;
+
+main()
+{
+	volatile double x;
+
+	/*
+	 * check to make sure that all exceptions are masked and 
+	 * that the accumulated exception status is clear.
+ 	 */
+	assert(fpgetmask() == 0);
+	assert(fpgetsticky() == 0);
+
+	/* set up signal handler */
+	signal (SIGFPE, sigfpe);
+	signal_cought = 0;
+
+	/* trip divide by zero */
+	x = one / zero;
+	assert (fpgetsticky() & FP_X_DZ);
+	assert (signal_cought == 0);
+	fpsetsticky(0);
+
+	/* trip invalid operation */
+	x = zero / zero;
+	assert (fpgetsticky() & FP_X_INV);
+	assert (signal_cought == 0);
+	fpsetsticky(0);
+
+	/* trip overflow */
+	x = huge * huge;
+	assert (fpgetsticky() & FP_X_OFL);
+	assert (signal_cought == 0);
+	fpsetsticky(0);
+
+	/* trip underflow */
+	x = tiny * tiny;
+	assert (fpgetsticky() & FP_X_UFL);
+	assert (signal_cought == 0);
+	fpsetsticky(0);
+
+#if 0
+	/* unmask and then trip divide by zero */
+	fpsetmask(FP_X_DZ);
+	x = one / zero;
+	assert (signal_cought == 1);
+	signal_cought = 0;
+
+	/* unmask and then trip invalid operation */
+	fpsetmask(FP_X_INV);
+	x = zero / zero;
+	assert (signal_cought == 1);
+	signal_cought = 0;
+
+	/* unmask and then trip overflow */
+	fpsetmask(FP_X_OFL);
+	x = huge * huge;
+	assert (signal_cought == 1);
+	signal_cought = 0;
+
+	/* unmask and then trip underflow */
+	fpsetmask(FP_X_UFL);
+	x = tiny * tiny;
+	assert (signal_cought == 1);
+	signal_cought = 0;
+#endif
+
+	exit(0);
+}
+
+void
+sigfpe()
+{
+	signal_cought = 1;
+}
-- 
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