/* * 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. */ #pragma weak cproj = __cproj /* INDENT OFF */ /* * dcomplex cproj(dcomplex z); * * If one of the component of z = (x,y) is an inf, then * cproj(z) = (+inf, copysign(0,y)); * otherwise, * cproj(z) = z */ /* INDENT ON */ #include "libm.h" /* fabs */ #include "complex_wrapper.h" static const double zero = 0.0; dcomplex cproj(dcomplex z) { double x, y; int ix, iy, hx, hy, lx, ly; x = D_RE(z); y = D_IM(z); hx = HI_WORD(x); lx = LO_WORD(x); hy = HI_WORD(y); ly = LO_WORD(y); ix = hx & 0x7fffffff; iy = hy & 0x7fffffff; if (ISINF(iy, ly)) { D_RE(z) = fabs(y); D_IM(z) = hy >= 0 ? zero : -zero; } else if (ISINF(ix, lx)) { D_RE(z) = fabs(x); D_IM(z) = hy >= 0 ? zero : -zero; } return (z); }