1*7c478bd9Sstevel@tonic-gate /* 2*7c478bd9Sstevel@tonic-gate * CDDL HEADER START 3*7c478bd9Sstevel@tonic-gate * 4*7c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*7c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*7c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*7c478bd9Sstevel@tonic-gate * with the License. 8*7c478bd9Sstevel@tonic-gate * 9*7c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*7c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*7c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 12*7c478bd9Sstevel@tonic-gate * and limitations under the License. 13*7c478bd9Sstevel@tonic-gate * 14*7c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*7c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*7c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*7c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*7c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*7c478bd9Sstevel@tonic-gate * 20*7c478bd9Sstevel@tonic-gate * CDDL HEADER END 21*7c478bd9Sstevel@tonic-gate */ 22*7c478bd9Sstevel@tonic-gate /* 23*7c478bd9Sstevel@tonic-gate * Copyright (c) 1994-1997, by Sun Microsystems, Inc. 24*7c478bd9Sstevel@tonic-gate * All rights reserved. 25*7c478bd9Sstevel@tonic-gate */ 26*7c478bd9Sstevel@tonic-gate 27*7c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 28*7c478bd9Sstevel@tonic-gate 29*7c478bd9Sstevel@tonic-gate #include "quad.h" 30*7c478bd9Sstevel@tonic-gate 31*7c478bd9Sstevel@tonic-gate #ifdef __sparcv9 32*7c478bd9Sstevel@tonic-gate 33*7c478bd9Sstevel@tonic-gate /* 34*7c478bd9Sstevel@tonic-gate * _Qp_itoq(pz, x) sets *pz = (long double)x. 35*7c478bd9Sstevel@tonic-gate */ 36*7c478bd9Sstevel@tonic-gate void 37*7c478bd9Sstevel@tonic-gate _Qp_itoq(union longdouble *pz, int x) 38*7c478bd9Sstevel@tonic-gate 39*7c478bd9Sstevel@tonic-gate #else 40*7c478bd9Sstevel@tonic-gate 41*7c478bd9Sstevel@tonic-gate /* 42*7c478bd9Sstevel@tonic-gate * _Q_itoq(x) returns (long double)x. 43*7c478bd9Sstevel@tonic-gate */ 44*7c478bd9Sstevel@tonic-gate union longdouble 45*7c478bd9Sstevel@tonic-gate _Q_itoq(int x) 46*7c478bd9Sstevel@tonic-gate 47*7c478bd9Sstevel@tonic-gate #endif /* __sparcv9 */ 48*7c478bd9Sstevel@tonic-gate 49*7c478bd9Sstevel@tonic-gate { 50*7c478bd9Sstevel@tonic-gate #ifndef __sparcv9 51*7c478bd9Sstevel@tonic-gate union longdouble z; 52*7c478bd9Sstevel@tonic-gate #endif 53*7c478bd9Sstevel@tonic-gate unsigned int s, e; 54*7c478bd9Sstevel@tonic-gate 55*7c478bd9Sstevel@tonic-gate /* extract the sign */ 56*7c478bd9Sstevel@tonic-gate s = 0; 57*7c478bd9Sstevel@tonic-gate if (x < 0) { 58*7c478bd9Sstevel@tonic-gate if ((unsigned) x == 0x80000000) { 59*7c478bd9Sstevel@tonic-gate /* largest negative int */ 60*7c478bd9Sstevel@tonic-gate Z.l.msw = 0xc01e0000; 61*7c478bd9Sstevel@tonic-gate Z.l.frac2 = Z.l.frac3 = Z.l.frac4 = 0; 62*7c478bd9Sstevel@tonic-gate QUAD_RETURN(Z); 63*7c478bd9Sstevel@tonic-gate } 64*7c478bd9Sstevel@tonic-gate x = -x; 65*7c478bd9Sstevel@tonic-gate s = 0x80000000; 66*7c478bd9Sstevel@tonic-gate } else if (x == 0) { 67*7c478bd9Sstevel@tonic-gate Z.l.msw = Z.l.frac2 = Z.l.frac3 = Z.l.frac4 = 0; 68*7c478bd9Sstevel@tonic-gate QUAD_RETURN(Z); 69*7c478bd9Sstevel@tonic-gate } 70*7c478bd9Sstevel@tonic-gate 71*7c478bd9Sstevel@tonic-gate /* find the most significant bit */ 72*7c478bd9Sstevel@tonic-gate for (e = 30; (x & (1 << e)) == 0; e--) 73*7c478bd9Sstevel@tonic-gate ; 74*7c478bd9Sstevel@tonic-gate 75*7c478bd9Sstevel@tonic-gate if (e > 16) { 76*7c478bd9Sstevel@tonic-gate Z.l.msw = ((unsigned) x >> (e - 16)) & 0xffff; 77*7c478bd9Sstevel@tonic-gate Z.l.frac2 = (unsigned) x << (48 - e); 78*7c478bd9Sstevel@tonic-gate } else { 79*7c478bd9Sstevel@tonic-gate Z.l.msw = ((unsigned) x << (16 - e)) & 0xffff; 80*7c478bd9Sstevel@tonic-gate Z.l.frac2 = 0; 81*7c478bd9Sstevel@tonic-gate } 82*7c478bd9Sstevel@tonic-gate Z.l.frac3 = Z.l.frac4 = 0; 83*7c478bd9Sstevel@tonic-gate Z.l.msw |= s | ((e + 0x3fff) << 16); 84*7c478bd9Sstevel@tonic-gate QUAD_RETURN(Z); 85*7c478bd9Sstevel@tonic-gate } 86