2N/A/*
2N/A * CDDL HEADER START
2N/A *
2N/A * The contents of this file are subject to the terms of the
2N/A * Common Development and Distribution License, Version 1.0 only
2N/A * (the "License"). You may not use this file except in compliance
2N/A * with the License.
2N/A *
2N/A * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
2N/A * or http://www.opensolaris.org/os/licensing.
2N/A * See the License for the specific language governing permissions
2N/A * and limitations under the License.
2N/A *
2N/A * When distributing Covered Code, include this CDDL HEADER in each
2N/A * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
2N/A * If applicable, add the following below this CDDL HEADER, with the
2N/A * fields enclosed by brackets "[]" replaced with your own identifying
2N/A * information: Portions Copyright [yyyy] [name of copyright owner]
2N/A *
2N/A * CDDL HEADER END
2N/A */
2N/A/*
2N/A * Copyright (c) 1994-1997, by Sun Microsystems, Inc.
2N/A * All rights reserved.
2N/A */
2N/A
2N/A#pragma ident "%Z%%M% %I% %E% SMI"
2N/A
2N/A#include "quad.h"
2N/A
2N/A#ifdef __sparcv9
2N/A
2N/A/*
2N/A * _Qp_stoq(pz, x) sets *pz = (long double)x.
2N/A */
2N/Avoid
2N/A_Qp_stoq(union longdouble *pz, float x)
2N/A
2N/A#else
2N/A
2N/A/*
2N/A * _Qp_stoq(x) returns (long double)x.
2N/A */
2N/Aunion longdouble
2N/A_Q_stoq(float x)
2N/A
2N/A#endif /* __sparcv9 */
2N/A
2N/A{
2N/A#ifndef __sparcv9
2N/A union longdouble z;
2N/A#endif
2N/A union {
2N/A float f;
2N/A unsigned int l;
2N/A } u;
2N/A unsigned int m, f, fsr;
2N/A
2N/A /* extract the exponent */
2N/A u.f = x;
2N/A m = ((u.l & 0x7f800000) >> 7) + 0x3f800000;
2N/A if (m == 0x3f800000) {
2N/A /* x is zero or denormal */
2N/A if (u.l & 0x7fffff) {
2N/A /* x is denormal, normalize it */
2N/A m = 0x3f810000;
2N/A f = u.l & 0x7fffff;
2N/A do {
2N/A f <<= 1;
2N/A m -= 0x10000;
2N/A } while ((f & 0x7f800000) == 0);
2N/A u.l = (u.l & 0x80000000) | f;
2N/A } else {
2N/A m = 0;
2N/A }
2N/A } else if (m == 0x407f0000) {
2N/A /* x is inf or nan */
2N/A m = 0x7fff0000;
2N/A if ((u.l & 0x3fffff) && (u.l & 0x400000) == 0) {
2N/A /* snan, signal invalid */
2N/A __quad_getfsrp(&fsr);
2N/A if (fsr & FSR_NVM) {
2N/A __quad_fstoq(&x, &Z);
2N/A QUAD_RETURN(Z);
2N/A } else {
2N/A fsr = (fsr & ~FSR_CEXC) | FSR_NVA | FSR_NVC;
2N/A __quad_setfsrp(&fsr);
2N/A }
2N/A u.l |= 0x400000;
2N/A }
2N/A }
2N/A Z.l.msw = m | (u.l & 0x80000000) | ((u.l & 0x7fff80) >> 7);
2N/A Z.l.frac2 = u.l << 25;
2N/A Z.l.frac3 = Z.l.frac4 = 0;
2N/A QUAD_RETURN(Z);
2N/A}