1 /* Subroutines for long double support.
2 Copyright (C) 2000, 2002, 2004, 2005, 2006, 2009 Free Software Foundation, Inc.
4 This file is part of GCC.
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)
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.
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.
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/>. */
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. */
31 /* Raise FP_INVALID on SNaN as a side effect. */
34 /* Comparison relations. */
40 int _U_Qfcmp (long double a, long double b, int);
41 long _U_Qfcnvfxt_quad_to_sgl (long double);
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);
58 int _U_Qfcomp (long double, long double);
60 long double _U_Qfneg (long double);
63 int __U_Qfcnvfxt_quad_to_sgl (long double);
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);
71 _U_Qfeq (long double a, long double b)
73 return (_U_Qfcmp (a, b, QCMP_EQ) != 0);
77 _U_Qfne (long double a, long double b)
79 return (_U_Qfcmp (a, b, QCMP_EQ) == 0);
83 _U_Qfgt (long double a, long double b)
85 return (_U_Qfcmp (a, b, QCMP_INV | QCMP_GT) != 0);
89 _U_Qfge (long double a, long double b)
91 return (_U_Qfcmp (a, b, QCMP_INV | QCMP_EQ | QCMP_GT) != 0);
95 _U_Qflt (long double a, long double b)
97 return (_U_Qfcmp (a, b, QCMP_INV | QCMP_LT) != 0);
101 _U_Qfle (long double a, long double b)
103 return (_U_Qfcmp (a, b, QCMP_INV | QCMP_EQ | QCMP_LT) != 0);
107 _U_Qfltgt (long double a, long double b)
109 return (_U_Qfcmp (a, b, QCMP_INV | QCMP_LT | QCMP_GT) != 0);
113 _U_Qfunle (long double a, long double b)
115 return (_U_Qfcmp (a, b, QCMP_INV | QCMP_UNORD | QCMP_EQ | QCMP_LT) != 0);
119 _U_Qfunlt (long double a, long double b)
121 return (_U_Qfcmp (a, b, QCMP_INV | QCMP_UNORD | QCMP_LT) != 0);
125 _U_Qfunge (long double a, long double b)
127 return (_U_Qfcmp (a, b, QCMP_INV | QCMP_UNORD | QCMP_EQ | QCMP_GT) != 0);
131 _U_Qfungt (long double a, long double b)
133 return (_U_Qfcmp (a, b, QCMP_INV | QCMP_UNORD | QCMP_GT) != 0);
137 _U_Qfuneq (long double a, long double b)
139 return (_U_Qfcmp (a, b, QCMP_INV | QCMP_UNORD | QCMP_EQ) != 0);
143 _U_Qfunord (long double a, long double b)
145 return (_U_Qfcmp (a, b, QCMP_INV | QCMP_UNORD) != 0);
149 _U_Qford (long double a, long double b)
151 return (_U_Qfcmp (a, b, QCMP_INV | QCMP_EQ | QCMP_LT | QCMP_GT) != 0);
155 _U_Qfcomp (long double a, long double b)
157 if (_U_Qfcmp (a, b, QCMP_EQ) == 0)
160 return (_U_Qfcmp (a, b, QCMP_UNORD | QCMP_EQ | QCMP_GT) != 0 ? 1 : -1);
164 /* Negate long double A. */
166 _U_Qfneg (long double a)
175 u.i[0] ^= 0x80000000;
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. */
184 __U_Qfcnvfxt_quad_to_sgl (long double a)
186 return _U_Qfcnvfxt_quad_to_sgl (a) >> 32;
190 /* HP only has signed conversion in the C library, so need to synthesize
191 unsigned versions. */
193 _U_Qfcnvfxt_quad_to_usgl (long double a)
195 extern long long _U_Qfcnvfxt_quad_to_dbl (long double a);
196 return (unsigned int) _U_Qfcnvfxt_quad_to_dbl (a);
200 _U_Qfcnvxf_usgl_to_quad (unsigned int a)
202 extern long double _U_Qfcnvxf_dbl_to_quad (long long);
203 return _U_Qfcnvxf_dbl_to_quad ((long long) a);
207 unsigned long long u[2];
212 _U_Qfcnvfxt_quad_to_udbl (long double a)
214 extern quad_type _U_Qfcnvfxt_quad_to_quad (long double a);
216 u = _U_Qfcnvfxt_quad_to_quad(a);
221 _U_Qfcnvxf_udbl_to_quad (unsigned long long a)
223 extern long double _U_Qfcnvxf_quad_to_quad (quad_type a);
227 return _U_Qfcnvxf_quad_to_quad (u);