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 #include "quad.h"
28*7c478bd9Sstevel@tonic-gate
29*7c478bd9Sstevel@tonic-gate #ifdef __sparcv9
30*7c478bd9Sstevel@tonic-gate #define _Q_qtoi _Qp_qtoi
31*7c478bd9Sstevel@tonic-gate #endif
32*7c478bd9Sstevel@tonic-gate
33*7c478bd9Sstevel@tonic-gate /*
34*7c478bd9Sstevel@tonic-gate * _Q_qtoi(x) returns (int)*x.
35*7c478bd9Sstevel@tonic-gate */
36*7c478bd9Sstevel@tonic-gate int
_Q_qtoi(const union longdouble * x)37*7c478bd9Sstevel@tonic-gate _Q_qtoi(const union longdouble *x)
38*7c478bd9Sstevel@tonic-gate {
39*7c478bd9Sstevel@tonic-gate unsigned int xm, fsr;
40*7c478bd9Sstevel@tonic-gate int i, round;
41*7c478bd9Sstevel@tonic-gate
42*7c478bd9Sstevel@tonic-gate xm = x->l.msw & 0x7fffffff;
43*7c478bd9Sstevel@tonic-gate
44*7c478bd9Sstevel@tonic-gate __quad_getfsrp(&fsr);
45*7c478bd9Sstevel@tonic-gate
46*7c478bd9Sstevel@tonic-gate /* handle nan, inf, and out-of-range cases */
47*7c478bd9Sstevel@tonic-gate if (xm >= 0x401e0000) {
48*7c478bd9Sstevel@tonic-gate if (x->l.msw == 0xc01e0000 && (x->l.frac2 & 0xfffe0000) == 0) {
49*7c478bd9Sstevel@tonic-gate /* return largest negative int */
50*7c478bd9Sstevel@tonic-gate i = 0x80000000;
51*7c478bd9Sstevel@tonic-gate if ((x->l.frac2 & 0x1ffff) | x->l.frac3 | x->l.frac4) {
52*7c478bd9Sstevel@tonic-gate /* signal inexact */
53*7c478bd9Sstevel@tonic-gate if (fsr & FSR_NXM) {
54*7c478bd9Sstevel@tonic-gate __quad_fqtoi(x, &i);
55*7c478bd9Sstevel@tonic-gate } else {
56*7c478bd9Sstevel@tonic-gate fsr = (fsr & ~FSR_CEXC) | FSR_NXA |
57*7c478bd9Sstevel@tonic-gate FSR_NXC;
58*7c478bd9Sstevel@tonic-gate __quad_setfsrp(&fsr);
59*7c478bd9Sstevel@tonic-gate }
60*7c478bd9Sstevel@tonic-gate }
61*7c478bd9Sstevel@tonic-gate return (i);
62*7c478bd9Sstevel@tonic-gate }
63*7c478bd9Sstevel@tonic-gate i = ((x->l.msw & 0x80000000)? 0x80000000 : 0x7fffffff);
64*7c478bd9Sstevel@tonic-gate if (fsr & FSR_NVM) {
65*7c478bd9Sstevel@tonic-gate __quad_fqtoi(x, &i);
66*7c478bd9Sstevel@tonic-gate } else {
67*7c478bd9Sstevel@tonic-gate fsr = (fsr & ~FSR_CEXC) | FSR_NVA | FSR_NVC;
68*7c478bd9Sstevel@tonic-gate __quad_setfsrp(&fsr);
69*7c478bd9Sstevel@tonic-gate }
70*7c478bd9Sstevel@tonic-gate return (i);
71*7c478bd9Sstevel@tonic-gate }
72*7c478bd9Sstevel@tonic-gate if (xm < 0x3fff0000) {
73*7c478bd9Sstevel@tonic-gate i = 0;
74*7c478bd9Sstevel@tonic-gate if (xm | x->l.frac2 | x->l.frac3 | x->l.frac4) {
75*7c478bd9Sstevel@tonic-gate /* signal inexact */
76*7c478bd9Sstevel@tonic-gate if (fsr & FSR_NXM) {
77*7c478bd9Sstevel@tonic-gate __quad_fqtoi(x, &i);
78*7c478bd9Sstevel@tonic-gate } else {
79*7c478bd9Sstevel@tonic-gate fsr = (fsr & ~FSR_CEXC) | FSR_NXA | FSR_NXC;
80*7c478bd9Sstevel@tonic-gate __quad_setfsrp(&fsr);
81*7c478bd9Sstevel@tonic-gate }
82*7c478bd9Sstevel@tonic-gate }
83*7c478bd9Sstevel@tonic-gate return (i);
84*7c478bd9Sstevel@tonic-gate }
85*7c478bd9Sstevel@tonic-gate
86*7c478bd9Sstevel@tonic-gate /* now x is in the range of int */
87*7c478bd9Sstevel@tonic-gate i = (int) (0x40000000 | ((xm & 0xffff) << 14) | (x->l.frac2 >> 18));
88*7c478bd9Sstevel@tonic-gate round = i & ((1 << (0x401d - (xm >> 16))) - 1);
89*7c478bd9Sstevel@tonic-gate i >>= (0x401d - (xm >> 16));
90*7c478bd9Sstevel@tonic-gate if (x->l.msw & 0x80000000)
91*7c478bd9Sstevel@tonic-gate i = -i;
92*7c478bd9Sstevel@tonic-gate if (round | (x->l.frac2 & 0x3ffff) | x->l.frac3 | x->l.frac4) {
93*7c478bd9Sstevel@tonic-gate /* signal inexact */
94*7c478bd9Sstevel@tonic-gate if (fsr & FSR_NXM) {
95*7c478bd9Sstevel@tonic-gate __quad_fqtoi(x, &i);
96*7c478bd9Sstevel@tonic-gate } else {
97*7c478bd9Sstevel@tonic-gate fsr = (fsr & ~FSR_CEXC) | FSR_NXA | FSR_NXC;
98*7c478bd9Sstevel@tonic-gate __quad_setfsrp(&fsr);
99*7c478bd9Sstevel@tonic-gate }
100*7c478bd9Sstevel@tonic-gate }
101*7c478bd9Sstevel@tonic-gate return (i);
102*7c478bd9Sstevel@tonic-gate }
103