125c28e8Piotr Jasiukajtis/*
225c28e8Piotr Jasiukajtis * CDDL HEADER START
325c28e8Piotr Jasiukajtis *
425c28e8Piotr Jasiukajtis * The contents of this file are subject to the terms of the
525c28e8Piotr Jasiukajtis * Common Development and Distribution License (the "License").
625c28e8Piotr Jasiukajtis * You may not use this file except in compliance with the License.
725c28e8Piotr Jasiukajtis *
825c28e8Piotr Jasiukajtis * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
925c28e8Piotr Jasiukajtis * or http://www.opensolaris.org/os/licensing.
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1125c28e8Piotr Jasiukajtis * and limitations under the License.
1225c28e8Piotr Jasiukajtis *
1325c28e8Piotr Jasiukajtis * When distributing Covered Code, include this CDDL HEADER in each
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2025c28e8Piotr Jasiukajtis */
2125c28e8Piotr Jasiukajtis/*
2225c28e8Piotr Jasiukajtis * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
2325c28e8Piotr Jasiukajtis */
2425c28e8Piotr Jasiukajtis/*
2525c28e8Piotr Jasiukajtis * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
2625c28e8Piotr Jasiukajtis * Use is subject to license terms.
2725c28e8Piotr Jasiukajtis */
2825c28e8Piotr Jasiukajtis
29ddc0e0bRichard Lowe#pragma weak __csinhf = csinhf
3025c28e8Piotr Jasiukajtis
3125c28e8Piotr Jasiukajtis#include "libm.h"
3225c28e8Piotr Jasiukajtis#include "complex_wrapper.h"
3325c28e8Piotr Jasiukajtis
3425c28e8Piotr Jasiukajtis#if defined(__i386) && !defined(__amd64)
3525c28e8Piotr Jasiukajtisextern int __swapRP(int);
3625c28e8Piotr Jasiukajtis#endif
3725c28e8Piotr Jasiukajtis
3825c28e8Piotr Jasiukajtisstatic const float zero = 0.0F, half = 0.5F;
3925c28e8Piotr Jasiukajtis
4025c28e8Piotr Jasiukajtisfcomplex
4125c28e8Piotr Jasiukajtiscsinhf(fcomplex z) {
4225c28e8Piotr Jasiukajtis	float		x, y, S, C;
4325c28e8Piotr Jasiukajtis	double		t;
4425c28e8Piotr Jasiukajtis	int		hx, ix, hy, iy, n;
4525c28e8Piotr Jasiukajtis	fcomplex	ans;
4625c28e8Piotr Jasiukajtis
4725c28e8Piotr Jasiukajtis	x = F_RE(z);
4825c28e8Piotr Jasiukajtis	y = F_IM(z);
4925c28e8Piotr Jasiukajtis	hx = THE_WORD(x);
5025c28e8Piotr Jasiukajtis	ix = hx & 0x7fffffff;
5125c28e8Piotr Jasiukajtis	hy = THE_WORD(y);
5225c28e8Piotr Jasiukajtis	iy = hy & 0x7fffffff;
5325c28e8Piotr Jasiukajtis	x = fabsf(x);
5425c28e8Piotr Jasiukajtis	y = fabsf(y);
5525c28e8Piotr Jasiukajtis
5625c28e8Piotr Jasiukajtis	sincosf(y, &S, &C);
5725c28e8Piotr Jasiukajtis	if (ix >= 0x41600000) {	/* |x| > 14 = prec/2 (14,28,34,60) */
5825c28e8Piotr Jasiukajtis		if (ix >= 0x42B171AA) {	/* |x| > 88.722... ~ log(2**128) */
5925c28e8Piotr Jasiukajtis			if (ix >= 0x7f800000) {	/* |x| is inf or NaN */
6025c28e8Piotr Jasiukajtis				if (iy == 0) {
6125c28e8Piotr Jasiukajtis					F_RE(ans) = x;
6225c28e8Piotr Jasiukajtis					F_IM(ans) = y;
6325c28e8Piotr Jasiukajtis				} else if (iy >= 0x7f800000) {
6425c28e8Piotr Jasiukajtis					F_RE(ans) = x;
6525c28e8Piotr Jasiukajtis					F_IM(ans) = x - y;
6625c28e8Piotr Jasiukajtis				} else {
6725c28e8Piotr Jasiukajtis					F_RE(ans) = C * x;
6825c28e8Piotr Jasiukajtis					F_IM(ans) = S * x;
6925c28e8Piotr Jasiukajtis				}
7025c28e8Piotr Jasiukajtis			} else {
7125c28e8Piotr Jasiukajtis#if defined(__i386) && !defined(__amd64)
7225c28e8Piotr Jasiukajtis				int	rp = __swapRP(fp_extended);
7325c28e8Piotr Jasiukajtis#endif
7425c28e8Piotr Jasiukajtis				/* return (C, S) * exp(x) / 2 */
7525c28e8Piotr Jasiukajtis				t = __k_cexp((double)x, &n);
7625c28e8Piotr Jasiukajtis				F_RE(ans) = (float)scalbn(C * t, n - 1);
7725c28e8Piotr Jasiukajtis				F_IM(ans) = (float)scalbn(S * t, n - 1);
7825c28e8Piotr Jasiukajtis#if defined(__i386) && !defined(__amd64)
7925c28e8Piotr Jasiukajtis				if (rp != fp_extended)
8025c28e8Piotr Jasiukajtis					(void) __swapRP(rp);
8125c28e8Piotr Jasiukajtis#endif
8225c28e8Piotr Jasiukajtis			}
8325c28e8Piotr Jasiukajtis		} else {
8425c28e8Piotr Jasiukajtis			t = expf(x) * half;
8525c28e8Piotr Jasiukajtis			F_RE(ans) = C * t;
8625c28e8Piotr Jasiukajtis			F_IM(ans) = S * t;
8725c28e8Piotr Jasiukajtis		}
8825c28e8Piotr Jasiukajtis	} else {
8925c28e8Piotr Jasiukajtis		if (ix == 0) {	/* x = 0, return (0,S) */
9025c28e8Piotr Jasiukajtis			F_RE(ans) = zero;
9125c28e8Piotr Jasiukajtis			F_IM(ans) = S;
9225c28e8Piotr Jasiukajtis		} else {
9325c28e8Piotr Jasiukajtis			F_RE(ans) = C * sinhf(x);
9425c28e8Piotr Jasiukajtis			F_IM(ans) = S * coshf(x);
9525c28e8Piotr Jasiukajtis		}
9625c28e8Piotr Jasiukajtis	}
9725c28e8Piotr Jasiukajtis	if (hx < 0)
9825c28e8Piotr Jasiukajtis		F_RE(ans) = -F_RE(ans);
9925c28e8Piotr Jasiukajtis	if (hy < 0)
10025c28e8Piotr Jasiukajtis		F_IM(ans) = -F_IM(ans);
10125c28e8Piotr Jasiukajtis	return (ans);
10225c28e8Piotr Jasiukajtis}
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