1*25c28e83SPiotr Jasiukajtis /* 2*25c28e83SPiotr Jasiukajtis * CDDL HEADER START 3*25c28e83SPiotr Jasiukajtis * 4*25c28e83SPiotr Jasiukajtis * The contents of this file are subject to the terms of the 5*25c28e83SPiotr Jasiukajtis * Common Development and Distribution License (the "License"). 6*25c28e83SPiotr Jasiukajtis * You may not use this file except in compliance with the License. 7*25c28e83SPiotr Jasiukajtis * 8*25c28e83SPiotr Jasiukajtis * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9*25c28e83SPiotr Jasiukajtis * or http://www.opensolaris.org/os/licensing. 10*25c28e83SPiotr Jasiukajtis * See the License for the specific language governing permissions 11*25c28e83SPiotr Jasiukajtis * and limitations under the License. 12*25c28e83SPiotr Jasiukajtis * 13*25c28e83SPiotr Jasiukajtis * When distributing Covered Code, include this CDDL HEADER in each 14*25c28e83SPiotr Jasiukajtis * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15*25c28e83SPiotr Jasiukajtis * If applicable, add the following below this CDDL HEADER, with the 16*25c28e83SPiotr Jasiukajtis * fields enclosed by brackets "[]" replaced with your own identifying 17*25c28e83SPiotr Jasiukajtis * information: Portions Copyright [yyyy] [name of copyright owner] 18*25c28e83SPiotr Jasiukajtis * 19*25c28e83SPiotr Jasiukajtis * CDDL HEADER END 20*25c28e83SPiotr Jasiukajtis */ 21*25c28e83SPiotr Jasiukajtis 22*25c28e83SPiotr Jasiukajtis /* 23*25c28e83SPiotr Jasiukajtis * Copyright 2011 Nexenta Systems, Inc. All rights reserved. 24*25c28e83SPiotr Jasiukajtis */ 25*25c28e83SPiotr Jasiukajtis /* 26*25c28e83SPiotr Jasiukajtis * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 27*25c28e83SPiotr Jasiukajtis * Use is subject to license terms. 28*25c28e83SPiotr Jasiukajtis */ 29*25c28e83SPiotr Jasiukajtis 30*25c28e83SPiotr Jasiukajtis #pragma weak cexpl = __cexpl 31*25c28e83SPiotr Jasiukajtis 32*25c28e83SPiotr Jasiukajtis #include "libm.h" /* expl/isinfl/iszerol/scalbnl/sincosl */ 33*25c28e83SPiotr Jasiukajtis #include "complex_wrapper.h" 34*25c28e83SPiotr Jasiukajtis 35*25c28e83SPiotr Jasiukajtis extern int isinfl(long double); 36*25c28e83SPiotr Jasiukajtis extern int iszerol(long double); 37*25c28e83SPiotr Jasiukajtis 38*25c28e83SPiotr Jasiukajtis /* INDENT OFF */ 39*25c28e83SPiotr Jasiukajtis static const long double zero = 0.0L; 40*25c28e83SPiotr Jasiukajtis /* INDENT ON */ 41*25c28e83SPiotr Jasiukajtis 42*25c28e83SPiotr Jasiukajtis ldcomplex 43*25c28e83SPiotr Jasiukajtis cexpl(ldcomplex z) { 44*25c28e83SPiotr Jasiukajtis ldcomplex ans; 45*25c28e83SPiotr Jasiukajtis long double x, y, t, c, s; 46*25c28e83SPiotr Jasiukajtis int n, ix, iy, hx, hy; 47*25c28e83SPiotr Jasiukajtis 48*25c28e83SPiotr Jasiukajtis x = LD_RE(z); 49*25c28e83SPiotr Jasiukajtis y = LD_IM(z); 50*25c28e83SPiotr Jasiukajtis hx = HI_XWORD(x); 51*25c28e83SPiotr Jasiukajtis hy = HI_XWORD(y); 52*25c28e83SPiotr Jasiukajtis ix = hx & 0x7fffffff; 53*25c28e83SPiotr Jasiukajtis iy = hy & 0x7fffffff; 54*25c28e83SPiotr Jasiukajtis if (iszerol(y)) { /* y = 0 */ 55*25c28e83SPiotr Jasiukajtis LD_RE(ans) = expl(x); 56*25c28e83SPiotr Jasiukajtis LD_IM(ans) = y; 57*25c28e83SPiotr Jasiukajtis } else if (isinfl(x)) { /* x is +-inf */ 58*25c28e83SPiotr Jasiukajtis if (hx < 0) { 59*25c28e83SPiotr Jasiukajtis if (iy >= 0x7fff0000) { 60*25c28e83SPiotr Jasiukajtis LD_RE(ans) = zero; 61*25c28e83SPiotr Jasiukajtis LD_IM(ans) = zero; 62*25c28e83SPiotr Jasiukajtis } else { 63*25c28e83SPiotr Jasiukajtis sincosl(y, &s, &c); 64*25c28e83SPiotr Jasiukajtis LD_RE(ans) = zero * c; 65*25c28e83SPiotr Jasiukajtis LD_IM(ans) = zero * s; 66*25c28e83SPiotr Jasiukajtis } 67*25c28e83SPiotr Jasiukajtis } else { 68*25c28e83SPiotr Jasiukajtis if (iy >= 0x7fff0000) { 69*25c28e83SPiotr Jasiukajtis LD_RE(ans) = x; 70*25c28e83SPiotr Jasiukajtis LD_IM(ans) = y - y; 71*25c28e83SPiotr Jasiukajtis } else { 72*25c28e83SPiotr Jasiukajtis (void) sincosl(y, &s, &c); 73*25c28e83SPiotr Jasiukajtis LD_RE(ans) = x * c; 74*25c28e83SPiotr Jasiukajtis LD_IM(ans) = x * s; 75*25c28e83SPiotr Jasiukajtis } 76*25c28e83SPiotr Jasiukajtis } 77*25c28e83SPiotr Jasiukajtis } else { 78*25c28e83SPiotr Jasiukajtis (void) sincosl(y, &s, &c); 79*25c28e83SPiotr Jasiukajtis if (ix >= 0x400C62E4) { /* |x| > 11356.52... ~ log(2**16384) */ 80*25c28e83SPiotr Jasiukajtis t = __k_cexpl(x, &n); 81*25c28e83SPiotr Jasiukajtis LD_RE(ans) = scalbnl(t * c, n); 82*25c28e83SPiotr Jasiukajtis LD_IM(ans) = scalbnl(t * s, n); 83*25c28e83SPiotr Jasiukajtis } else { 84*25c28e83SPiotr Jasiukajtis t = expl(x); 85*25c28e83SPiotr Jasiukajtis LD_RE(ans) = t * c; 86*25c28e83SPiotr Jasiukajtis LD_IM(ans) = t * s; 87*25c28e83SPiotr Jasiukajtis } 88*25c28e83SPiotr Jasiukajtis } 89*25c28e83SPiotr Jasiukajtis return (ans); 90*25c28e83SPiotr Jasiukajtis } 91