1 files changed, 116 insertions, 0 deletions
diff --git a/usr/src/lib/libm/common/Q/rndintl.c b/usr/src/lib/libm/common/Q/rndintl.c
new file mode 100644
index 0000000000..50e7ed1f77
--- /dev/null
+++ b/usr/src/lib/libm/common/Q/rndintl.c
@@ -0,0 +1,116 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
+ */
+/*
+ * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#pragma weak aintl = __aintl
+#pragma weak anintl = __anintl
+#pragma weak irintl = __irintl
+#pragma weak nintl = __nintl
+
+/*
+ * aintl(x)	return x chopped to integral value
+ * anintl(x)	return sign(x)*(|x|+0.5) chopped to integral value
+ * irintl(x)	return rint(x) in integer format
+ * nintl(x)	return anint(x) in integer format
+ *
+ * NOTE: aintl(x), anintl(x), ceill(x), floorl(x), and rintl(x) return result
+ * with the same sign as x's,  including 0.0.
+ */
+
+#include "libm.h"
+#include "longdouble.h"
+
+extern enum fp_direction_type __swapRD(enum fp_direction_type);
+
+static const long double qone = 1.0L, qhalf = 0.5L, qmhalf = -0.5L;
+
+long double
+aintl(long double x) {
+	long double t, w;
+
+	if (!finitel(x))
+		return (x + x);
+	w = fabsl(x);
+	t = rintl(w);
+	if (t <= w)
+		return (copysignl(t, x));	/* NaN or already aint(|x|) */
+	else	/* |t|>|x| case */
+		return (copysignl(t - qone, x));	/* |t-1|*sign(x) */
+}
+
+long double
+anintl(long double x) {
+	long double t, w, z;
+
+	if (!finitel(x))
+		return (x + x);
+	w = fabsl(x);
+	t = rintl(w);
+	if (t == w)
+		return (copysignl(t, x));
+	z = t - w;
+	if (z > qhalf)
+		t = t - qone;
+	else if (z <= qmhalf)
+		t = t + qone;
+	return (copysignl(t, x));
+}
+
+int
+irintl(long double x) {
+	enum fp_direction_type rd;
+
+	rd = __swapRD(fp_nearest);
+	(void) __swapRD(rd);	/* restore Rounding Direction */
+	switch (rd) {
+	case fp_nearest:
+		if (x < 2147483647.5L && x >= -2147483648.5L)
+			return ((int)rintl(x));
+		break;
+	case fp_tozero:
+		if (x < 2147483648.0L && x > -2147483649.0L)
+			return ((int)rintl(x));
+		break;
+	case fp_positive:
+		if (x <= 2147483647.0L && x > -2147483649.0L)
+			return ((int)rintl(x));
+		break;
+	case fp_negative:
+		if (x < 2147483648.0L && x >= -2147483648.0L)
+			return ((int)rintl(x));
+		break;
+	}
+	return ((int)copysignl(1.0e100L, x));
+}
+
+int
+nintl(long double x) {
+	if ((x < 2147483647.5L) && (x > -2147483648.5L))
+		return ((int)anintl(x));
+	else
+		return ((int)copysignl(1.0e100L, x));
+}