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comparison gcc/config/pa/quadlib.c @ 0:a06113de4d67 gcc-4.4.0

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first commit
author kent <kent@cr.ie.u-ryukyu.ac.jp>
date Fri, 17 Jul 2009 14:47:48 +0900
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children f6334be47118
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-1:000000000000 0:a06113de4d67
1 /* Subroutines for long double support.
2 Copyright (C) 2000, 2002, 2004, 2005, 2006, 2009 Free Software Foundation, Inc.
3
4 This file is part of GCC.
5
6 GCC is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3, or (at your option)
9 any later version.
10
11 GCC is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 Under Section 7 of GPL version 3, you are granted additional
17 permissions described in the GCC Runtime Library Exception, version
18 3.1, as published by the Free Software Foundation.
19
20 You should have received a copy of the GNU General Public License and
21 a copy of the GCC Runtime Library Exception along with this program;
22 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23 <http://www.gnu.org/licenses/>. */
24
25 /* HPUX TFmode compare requires a library call to _U_Qfcmp. It takes
26 a magic number as its third argument which indicates what to do.
27 The return value is an integer to be compared against zero. The
28 comparison conditions are the same as those listed in Table 8-12
29 of the PA-RISC 2.0 Architecture book for the fcmp instruction. */
30
31 /* Raise FP_INVALID on SNaN as a side effect. */
32 #define QCMP_INV 1
33
34 /* Comparison relations. */
35 #define QCMP_UNORD 2
36 #define QCMP_EQ 4
37 #define QCMP_LT 8
38 #define QCMP_GT 16
39
40 int _U_Qfcmp (long double a, long double b, int);
41 long _U_Qfcnvfxt_quad_to_sgl (long double);
42
43 int _U_Qfeq (long double, long double);
44 int _U_Qfne (long double, long double);
45 int _U_Qfgt (long double, long double);
46 int _U_Qfge (long double, long double);
47 int _U_Qflt (long double, long double);
48 int _U_Qfle (long double, long double);
49 int _U_Qfltgt (long double, long double);
50 int _U_Qfunle (long double, long double);
51 int _U_Qfunlt (long double, long double);
52 int _U_Qfunge (long double, long double);
53 int _U_Qfungt (long double, long double);
54 int _U_Qfuneq (long double, long double);
55 int _U_Qfunord (long double, long double);
56 int _U_Qford (long double, long double);
57
58 int _U_Qfcomp (long double, long double);
59
60 long double _U_Qfneg (long double);
61
62 #ifdef __LP64__
63 int __U_Qfcnvfxt_quad_to_sgl (long double);
64 #endif
65 unsigned int _U_Qfcnvfxt_quad_to_usgl(long double);
66 long double _U_Qfcnvxf_usgl_to_quad (unsigned int);
67 unsigned long long _U_Qfcnvfxt_quad_to_udbl(long double);
68 long double _U_Qfcnvxf_udbl_to_quad (unsigned long long);
69
70 int
71 _U_Qfeq (long double a, long double b)
72 {
73 return (_U_Qfcmp (a, b, QCMP_EQ) != 0);
74 }
75
76 int
77 _U_Qfne (long double a, long double b)
78 {
79 return (_U_Qfcmp (a, b, QCMP_EQ) == 0);
80 }
81
82 int
83 _U_Qfgt (long double a, long double b)
84 {
85 return (_U_Qfcmp (a, b, QCMP_INV | QCMP_GT) != 0);
86 }
87
88 int
89 _U_Qfge (long double a, long double b)
90 {
91 return (_U_Qfcmp (a, b, QCMP_INV | QCMP_EQ | QCMP_GT) != 0);
92 }
93
94 int
95 _U_Qflt (long double a, long double b)
96 {
97 return (_U_Qfcmp (a, b, QCMP_INV | QCMP_LT) != 0);
98 }
99
100 int
101 _U_Qfle (long double a, long double b)
102 {
103 return (_U_Qfcmp (a, b, QCMP_INV | QCMP_EQ | QCMP_LT) != 0);
104 }
105
106 int
107 _U_Qfltgt (long double a, long double b)
108 {
109 return (_U_Qfcmp (a, b, QCMP_INV | QCMP_LT | QCMP_GT) != 0);
110 }
111
112 int
113 _U_Qfunle (long double a, long double b)
114 {
115 return (_U_Qfcmp (a, b, QCMP_INV | QCMP_UNORD | QCMP_EQ | QCMP_LT) != 0);
116 }
117
118 int
119 _U_Qfunlt (long double a, long double b)
120 {
121 return (_U_Qfcmp (a, b, QCMP_INV | QCMP_UNORD | QCMP_LT) != 0);
122 }
123
124 int
125 _U_Qfunge (long double a, long double b)
126 {
127 return (_U_Qfcmp (a, b, QCMP_INV | QCMP_UNORD | QCMP_EQ | QCMP_GT) != 0);
128 }
129
130 int
131 _U_Qfungt (long double a, long double b)
132 {
133 return (_U_Qfcmp (a, b, QCMP_INV | QCMP_UNORD | QCMP_GT) != 0);
134 }
135
136 int
137 _U_Qfuneq (long double a, long double b)
138 {
139 return (_U_Qfcmp (a, b, QCMP_INV | QCMP_UNORD | QCMP_EQ) != 0);
140 }
141
142 int
143 _U_Qfunord (long double a, long double b)
144 {
145 return (_U_Qfcmp (a, b, QCMP_INV | QCMP_UNORD) != 0);
146 }
147
148 int
149 _U_Qford (long double a, long double b)
150 {
151 return (_U_Qfcmp (a, b, QCMP_INV | QCMP_EQ | QCMP_LT | QCMP_GT) != 0);
152 }
153
154 int
155 _U_Qfcomp (long double a, long double b)
156 {
157 if (_U_Qfcmp (a, b, QCMP_EQ) == 0)
158 return 0;
159
160 return (_U_Qfcmp (a, b, QCMP_UNORD | QCMP_EQ | QCMP_GT) != 0 ? 1 : -1);
161 }
162
163
164 /* Negate long double A. */
165 long double
166 _U_Qfneg (long double a)
167 {
168 union
169 {
170 long double ld;
171 int i[4];
172 } u;
173
174 u.ld = a;
175 u.i[0] ^= 0x80000000;
176 return u.ld;
177 }
178
179 #ifdef __LP64__
180 /* This routine is only necessary for the PA64 port; for reasons unknown
181 _U_Qfcnvfxt_quad_to_sgl returns the integer in the high 32bits of the
182 return value. Ugh. */
183 int
184 __U_Qfcnvfxt_quad_to_sgl (long double a)
185 {
186 return _U_Qfcnvfxt_quad_to_sgl (a) >> 32;
187 }
188 #endif
189
190 /* HP only has signed conversion in the C library, so need to synthesize
191 unsigned versions. */
192 unsigned int
193 _U_Qfcnvfxt_quad_to_usgl (long double a)
194 {
195 extern long long _U_Qfcnvfxt_quad_to_dbl (long double a);
196 return (unsigned int) _U_Qfcnvfxt_quad_to_dbl (a);
197 }
198
199 long double
200 _U_Qfcnvxf_usgl_to_quad (unsigned int a)
201 {
202 extern long double _U_Qfcnvxf_dbl_to_quad (long long);
203 return _U_Qfcnvxf_dbl_to_quad ((long long) a);
204 }
205
206 typedef union {
207 unsigned long long u[2];
208 long double d[1];
209 } quad_type;
210
211 unsigned long long
212 _U_Qfcnvfxt_quad_to_udbl (long double a)
213 {
214 extern quad_type _U_Qfcnvfxt_quad_to_quad (long double a);
215 quad_type u;
216 u = _U_Qfcnvfxt_quad_to_quad(a);
217 return u.u[1];
218 }
219
220 long double
221 _U_Qfcnvxf_udbl_to_quad (unsigned long long a)
222 {
223 extern long double _U_Qfcnvxf_quad_to_quad (quad_type a);
224 quad_type u;
225 u.u[0] = 0;
226 u.u[1] = a;
227 return _U_Qfcnvxf_quad_to_quad (u);
228 }