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diff --git a/usr/src/libm/src/R/sinhf.c b/usr/src/libm/src/R/sinhf.c
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+/*
+ * 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 2005 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#pragma ident "@(#)sinhf.c 1.12 06/01/23 SMI"
+
+#pragma weak sinhf = __sinhf
+
+#include "libm.h"
+
+float
+sinhf(float x) {
+ double s;
+ float w;
+ int hx, ix;
+
+ hx = *(int *)&x;
+ ix = hx & ~0x80000000;
+ if (ix >= 0x7f800000) {
+ /* sinhf(x) is x if x is +-Inf or NaN */
+ return (x * 1.0f);
+ }
+ if (ix >= 0x43000000) /* sinhf(x) trivially overflows */
+ s = (hx < 0)? -1.0e100 : 1.0e100;
+ else
+ s = sinh((double)x);
+ w = (float)s;
+ return (w);
+}