693 Opensource replacement of sunwlibm

Reviewed by: Igor Kozhukhov ikozhukhov@gmail.com
Reviewed by: Keith M Wesolowski <keith.wesolowski@joyent.com>
Reviewed by: Richard Lowe <richlowe@richlowe.net>
Approved by: Dan McDonald <danmcd@omniti.com>

1 files changed, 113 insertions, 0 deletions

diff --git a/usr/src/lib/libm/common/Q/ieee_funcl.c b/usr/src/lib/libm/common/Q/ieee_funcl.c
new file mode 100644
index 0000000000..74e6cacfe8
--- /dev/null
+++ b/usr/src/lib/libm/common/Q/ieee_funcl.c
@@ -0,0 +1,113 @@
+/*
+ * 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 2006 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#if defined(ELFOBJ)
+#pragma weak isinfl = __isinfl
+#pragma weak isnormall = __isnormall
+#pragma weak issubnormall = __issubnormall
+#pragma weak iszerol = __iszerol
+#pragma weak signbitl = __signbitl
+#endif
+
+#include "libm.h"
+
+#if defined(__sparc)
+int
+isinfl(long double x) {
+	int *px = (int *) &x;
+	return ((px[0] & ~0x80000000) == 0x7fff0000 && px[1] == 0 &&
+		px[2] == 0 && px[3] == 0);
+}
+
+int
+isnormall(long double x) {
+	int *px = (int *) &x;
+	return ((unsigned) ((px[0] & 0x7fff0000) - 0x10000) < 0x7ffe0000);
+}
+
+int
+issubnormall(long double x) {
+	int *px = (int *) &x;
+	px[0] &= ~0x80000000;
+	return (px[0] < 0x00010000 && (px[0] | px[1] | px[2] | px[3]) != 0);
+}
+
+int
+iszerol(long double x) {
+	int *px = (int *) &x;
+	return (((px[0] & ~0x80000000) | px[1] | px[2] | px[3]) == 0);
+}
+
+int
+signbitl(long double x) {
+	unsigned *px = (unsigned *) &x;
+	return (px[0] >> 31);
+}
+#elif defined(__x86)
+int
+isinfl(long double x) {
+	int *px = (int *) &x;
+#if defined(HANDLE_UNSUPPORTED)
+	return ((px[2] & 0x7fff) == 0x7fff &&
+		((px[1] ^ 0x80000000) | px[0]) == 0);
+#else
+	return ((px[2] & 0x7fff) == 0x7fff &&
+		((px[1] & ~0x80000000) | px[0]) == 0);
+#endif
+}
+
+int
+isnormall(long double x) {
+	int *px = (int *) &x;
+#if defined(HANDLE_UNSUPPORTED)
+	return ((unsigned) ((px[2] & 0x7fff) - 1) < 0x7ffe &&
+		(px[1] & 0x80000000) != 0);
+#else
+	return ((unsigned) ((px[2] & 0x7fff) - 1) < 0x7ffe);
+#endif
+}
+
+int
+issubnormall(long double x) {
+	int *px = (int *) &x;
+	return ((px[2] & 0x7fff) == 0 && (px[0] | px[1]) != 0);
+}
+
+int
+iszerol(long double x) {
+	int *px = (int *) &x;
+	return (((px[2] & 0x7fff) | px[0] | px[1]) == 0);
+}
+
+int
+signbitl(long double x) {
+	unsigned *px = (unsigned *) &x;
+	return ((px[2] >> 15) & 1);
+}
+#endif	/* defined(__sparc) || defined(__x86) */