1 files changed, 84 insertions, 0 deletions
diff --git a/usr/src/libm/src/Q/__rem_pio2l.c b/usr/src/libm/src/Q/__rem_pio2l.c
new file mode 100644
index 0000000..cdc787f
--- /dev/null
+++ b/usr/src/libm/src/Q/__rem_pio2l.c
@@ -0,0 +1,84 @@
+/*
+ * 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 2006 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#pragma ident	"@(#)__rem_pio2l.c	1.12	06/01/31 SMI"
+
+/*
+ * __rem_pio2l(x,y)
+ *
+ * return the remainder of x rem pi/2 in y[0]+y[1] by calling __rem_pio2m
+ */
+
+#ifndef FDLIBM_BASED
+#include "libm.h"
+extern int __rem_pio2m(double *, double *, int, int, int, const int *);
+#else				/* FDLIBM_BASED */
+#include "fdlibm.h"
+#define	__rem_pio2m	__kernel_rem_pio2
+#endif				/* FDLIBM_BASED */
+
+extern const int _TBL_ipio2l_inf[];
+
+static const long double
+	two24l = 16777216.0L,
+	pio4   = 0.7853981633974483096156608458198757210495L;
+
+int
+__rem_pio2l(long double x, long double *y) {
+	long double z, w;
+	double t[5], v[5];
+	int e0, i, nx, n, sign;
+	const int *ipio2;
+
+	sign = signbitl(x);
+	z = fabsl(x);
+	if (z <= pio4) {
+		y[0] = x;
+		y[1] = 0;
+		return (0);
+	}
+	e0 = ilogbl(z) - 23;
+	z = scalbnl(z, -e0);
+	for (i = 0; i < 5; i++) {
+		t[i] = (double) ((int) (z));
+		z = (z - (long double) t[i]) * two24l;
+	}
+	nx = 5;
+	while (t[nx - 1] == 0.0)
+		nx--;		/* skip zero term */
+	ipio2 = _TBL_ipio2l_inf;
+	n = __rem_pio2m(t, v, e0, nx, 3, (const int *) ipio2);
+	z = (long double) v[2] + (long double) v[1];
+	w = (long double) v[0];
+	y[0] = z + w;
+	y[1] = z - (y[0] - w);
+	if (sign == 1) {
+		y[0] = -y[0];
+		y[1] = -y[1];
+		return (-n);
+	}
+	return (n);
+}