1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate * CDDL HEADER START
3*0Sstevel@tonic-gate *
4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*0Sstevel@tonic-gate * with the License.
8*0Sstevel@tonic-gate *
9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate * and limitations under the License.
13*0Sstevel@tonic-gate *
14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate *
20*0Sstevel@tonic-gate * CDDL HEADER END
21*0Sstevel@tonic-gate */
22*0Sstevel@tonic-gate /*
23*0Sstevel@tonic-gate * Copyright (c) 1994-1997, by Sun Microsystems, Inc.
24*0Sstevel@tonic-gate * All rights reserved.
25*0Sstevel@tonic-gate */
26*0Sstevel@tonic-gate
27*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI"
28*0Sstevel@tonic-gate
29*0Sstevel@tonic-gate #include "quad.h"
30*0Sstevel@tonic-gate
31*0Sstevel@tonic-gate #ifdef __sparcv9
32*0Sstevel@tonic-gate #define _Q_qtou _Qp_qtoui
33*0Sstevel@tonic-gate #endif
34*0Sstevel@tonic-gate
35*0Sstevel@tonic-gate /*
36*0Sstevel@tonic-gate * _Q_qtou(x) returns (unsigned int)*x.
37*0Sstevel@tonic-gate */
38*0Sstevel@tonic-gate unsigned
_Q_qtou(const union longdouble * x)39*0Sstevel@tonic-gate _Q_qtou(const union longdouble *x)
40*0Sstevel@tonic-gate {
41*0Sstevel@tonic-gate union longdouble z;
42*0Sstevel@tonic-gate unsigned int xm, fsr;
43*0Sstevel@tonic-gate int i, round;
44*0Sstevel@tonic-gate
45*0Sstevel@tonic-gate xm = x->l.msw & 0x7fffffff;
46*0Sstevel@tonic-gate
47*0Sstevel@tonic-gate __quad_getfsrp(&fsr);
48*0Sstevel@tonic-gate
49*0Sstevel@tonic-gate /* handle nan, inf, and out-of-range cases */
50*0Sstevel@tonic-gate if (xm >= 0x401e0000) {
51*0Sstevel@tonic-gate if (x->l.msw < 0x401f0000) {
52*0Sstevel@tonic-gate i = 0x80000000 | ((xm & 0xffff) << 15) |
53*0Sstevel@tonic-gate (x->l.frac2 >> 17);
54*0Sstevel@tonic-gate if ((x->l.frac2 & 0x1ffff) | x->l.frac3 | x->l.frac4) {
55*0Sstevel@tonic-gate /* signal inexact */
56*0Sstevel@tonic-gate if (fsr & FSR_NXM) {
57*0Sstevel@tonic-gate /* z = x - 2^31 */
58*0Sstevel@tonic-gate if (xm & 0xffff ||
59*0Sstevel@tonic-gate x->l.frac2 & 0xffff0000) {
60*0Sstevel@tonic-gate z.l.msw = xm & 0xffff;
61*0Sstevel@tonic-gate z.l.frac2 = x->l.frac2;
62*0Sstevel@tonic-gate z.l.frac3 = x->l.frac3;
63*0Sstevel@tonic-gate z.l.frac4 = x->l.frac4;
64*0Sstevel@tonic-gate } else if (x->l.frac2 & 0xffff ||
65*0Sstevel@tonic-gate x->l.frac3 & 0xffff0000) {
66*0Sstevel@tonic-gate z.l.msw = x->l.frac2;
67*0Sstevel@tonic-gate z.l.frac2 = x->l.frac3;
68*0Sstevel@tonic-gate z.l.frac3 = x->l.frac4;
69*0Sstevel@tonic-gate z.l.frac4 = 0;
70*0Sstevel@tonic-gate } else if (x->l.frac3 & 0xffff ||
71*0Sstevel@tonic-gate x->l.frac4 & 0xffff0000) {
72*0Sstevel@tonic-gate z.l.msw = x->l.frac3;
73*0Sstevel@tonic-gate z.l.frac2 = x->l.frac4;
74*0Sstevel@tonic-gate z.l.frac3 = z.l.frac4 = 0;
75*0Sstevel@tonic-gate } else {
76*0Sstevel@tonic-gate z.l.msw = x->l.frac4;
77*0Sstevel@tonic-gate z.l.frac2 = z.l.frac3 =
78*0Sstevel@tonic-gate z.l.frac4 = 0;
79*0Sstevel@tonic-gate }
80*0Sstevel@tonic-gate xm = 0x401e;
81*0Sstevel@tonic-gate while ((z.l.msw & 0x10000) == 0) {
82*0Sstevel@tonic-gate z.l.msw = (z.l.msw << 1) |
83*0Sstevel@tonic-gate (z.l.frac2 >> 31);
84*0Sstevel@tonic-gate z.l.frac2 = (z.l.frac2 << 1) |
85*0Sstevel@tonic-gate (z.l.frac3 >> 31);
86*0Sstevel@tonic-gate z.l.frac3 = (z.l.frac3 << 1) |
87*0Sstevel@tonic-gate (z.l.frac4 >> 31);
88*0Sstevel@tonic-gate z.l.frac4 <<= 1;
89*0Sstevel@tonic-gate xm--;
90*0Sstevel@tonic-gate }
91*0Sstevel@tonic-gate z.l.msw |= (xm << 16);
92*0Sstevel@tonic-gate __quad_fqtoi(&z, &i);
93*0Sstevel@tonic-gate i |= 0x80000000;
94*0Sstevel@tonic-gate } else {
95*0Sstevel@tonic-gate fsr = (fsr & ~FSR_CEXC) | FSR_NXA |
96*0Sstevel@tonic-gate FSR_NXC;
97*0Sstevel@tonic-gate __quad_setfsrp(&fsr);
98*0Sstevel@tonic-gate }
99*0Sstevel@tonic-gate }
100*0Sstevel@tonic-gate return (i);
101*0Sstevel@tonic-gate }
102*0Sstevel@tonic-gate if (x->l.msw == 0xc01e0000 && (x->l.frac2 & 0xfffe0000) == 0) {
103*0Sstevel@tonic-gate /* return largest negative int */
104*0Sstevel@tonic-gate i = 0x80000000;
105*0Sstevel@tonic-gate if ((x->l.frac2 & 0x1ffff) | x->l.frac3 | x->l.frac4) {
106*0Sstevel@tonic-gate /* signal inexact */
107*0Sstevel@tonic-gate if (fsr & FSR_NXM) {
108*0Sstevel@tonic-gate __quad_fqtoi(x, &i);
109*0Sstevel@tonic-gate } else {
110*0Sstevel@tonic-gate fsr = (fsr & ~FSR_CEXC) | FSR_NXA |
111*0Sstevel@tonic-gate FSR_NXC;
112*0Sstevel@tonic-gate __quad_setfsrp(&fsr);
113*0Sstevel@tonic-gate }
114*0Sstevel@tonic-gate }
115*0Sstevel@tonic-gate return (i);
116*0Sstevel@tonic-gate }
117*0Sstevel@tonic-gate i = ((x->l.msw & 0x80000000)? 0x80000000 : 0x7fffffff);
118*0Sstevel@tonic-gate if (fsr & FSR_NVM) {
119*0Sstevel@tonic-gate __quad_fqtoi(x, &i);
120*0Sstevel@tonic-gate } else {
121*0Sstevel@tonic-gate fsr = (fsr & ~FSR_CEXC) | FSR_NVA | FSR_NVC;
122*0Sstevel@tonic-gate __quad_setfsrp(&fsr);
123*0Sstevel@tonic-gate }
124*0Sstevel@tonic-gate return (i);
125*0Sstevel@tonic-gate }
126*0Sstevel@tonic-gate if (xm < 0x3fff0000) {
127*0Sstevel@tonic-gate if (xm | x->l.frac2 | x->l.frac3 | x->l.frac4) {
128*0Sstevel@tonic-gate /* signal inexact */
129*0Sstevel@tonic-gate i = 0;
130*0Sstevel@tonic-gate if (fsr & FSR_NXM) {
131*0Sstevel@tonic-gate __quad_fqtoi(x, &i);
132*0Sstevel@tonic-gate } else {
133*0Sstevel@tonic-gate fsr = (fsr & ~FSR_CEXC) | FSR_NXA | FSR_NXC;
134*0Sstevel@tonic-gate __quad_setfsrp(&fsr);
135*0Sstevel@tonic-gate }
136*0Sstevel@tonic-gate return (i);
137*0Sstevel@tonic-gate }
138*0Sstevel@tonic-gate return (0);
139*0Sstevel@tonic-gate }
140*0Sstevel@tonic-gate
141*0Sstevel@tonic-gate /* now x is in the range of int */
142*0Sstevel@tonic-gate i = 0x40000000 | ((xm & 0xffff) << 14) | (x->l.frac2 >> 18);
143*0Sstevel@tonic-gate round = i & ((1 << (0x401d - (xm >> 16))) - 1);
144*0Sstevel@tonic-gate i >>= (0x401d - (xm >> 16));
145*0Sstevel@tonic-gate if (x->l.msw & 0x80000000)
146*0Sstevel@tonic-gate i = -i;
147*0Sstevel@tonic-gate if (round | (x->l.frac2 & 0x3ffff) | x->l.frac3 | x->l.frac4) {
148*0Sstevel@tonic-gate /* signal inexact */
149*0Sstevel@tonic-gate if (fsr & FSR_NXM) {
150*0Sstevel@tonic-gate __quad_fqtoi(x, &i);
151*0Sstevel@tonic-gate } else {
152*0Sstevel@tonic-gate fsr = (fsr & ~FSR_CEXC) | FSR_NXA | FSR_NXC;
153*0Sstevel@tonic-gate __quad_setfsrp(&fsr);
154*0Sstevel@tonic-gate }
155*0Sstevel@tonic-gate }
156*0Sstevel@tonic-gate return (i);
157*0Sstevel@tonic-gate }
158