1 /* Subroutines for long double support.
2 Copyright (C) 2000, 2002, 2004, 2005, 2006 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 2, or (at your option)
11 In addition to the permissions in the GNU General Public License, the
12 Free Software Foundation gives you unlimited permission to link the
13 compiled version of this file into combinations with other programs,
14 and to distribute those combinations without any restriction coming
15 from the use of this file. (The General Public License restrictions
16 do apply in other respects; for example, they cover modification of
17 the file, and distribution when not linked into a combine
20 GCC is distributed in the hope that it will be useful,
21 but WITHOUT ANY WARRANTY; without even the implied warranty of
22 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 GNU General Public License for more details.
25 You should have received a copy of the GNU General Public License
26 along with GCC; see the file COPYING. If not, write to
27 the Free Software Foundation, 51 Franklin Street, Fifth Floor,
28 Boston, MA 02110-1301, USA. */
30 /* HPUX TFmode compare requires a library call to _U_Qfcmp. It takes
31 a magic number as its third argument which indicates what to do.
32 The return value is an integer to be compared against zero. The
33 comparison conditions are the same as those listed in Table 8-12
34 of the PA-RISC 2.0 Architecture book for the fcmp instruction. */
36 /* Raise FP_INVALID on SNaN as a side effect. */
39 /* Comparison relations. */
45 int _U_Qfcmp (long double a
, long double b
, int);
46 long _U_Qfcnvfxt_quad_to_sgl (long double);
48 int _U_Qfeq (long double, long double);
49 int _U_Qfne (long double, long double);
50 int _U_Qfgt (long double, long double);
51 int _U_Qfge (long double, long double);
52 int _U_Qflt (long double, long double);
53 int _U_Qfle (long double, long double);
54 int _U_Qfltgt (long double, long double);
55 int _U_Qfunle (long double, long double);
56 int _U_Qfunlt (long double, long double);
57 int _U_Qfunge (long double, long double);
58 int _U_Qfungt (long double, long double);
59 int _U_Qfuneq (long double, long double);
60 int _U_Qfunord (long double, long double);
61 int _U_Qford (long double, long double);
63 int _U_Qfcomp (long double, long double);
65 long double _U_Qfneg (long double);
68 int __U_Qfcnvfxt_quad_to_sgl (long double);
70 unsigned int _U_Qfcnvfxt_quad_to_usgl(long double);
71 long double _U_Qfcnvxf_usgl_to_quad (unsigned int);
72 unsigned long long _U_Qfcnvfxt_quad_to_udbl(long double);
73 long double _U_Qfcnvxf_udbl_to_quad (unsigned long long);
76 _U_Qfeq (long double a
, long double b
)
78 return (_U_Qfcmp (a
, b
, QCMP_EQ
) != 0);
82 _U_Qfne (long double a
, long double b
)
84 return (_U_Qfcmp (a
, b
, QCMP_EQ
) == 0);
88 _U_Qfgt (long double a
, long double b
)
90 return (_U_Qfcmp (a
, b
, QCMP_INV
| QCMP_GT
) != 0);
94 _U_Qfge (long double a
, long double b
)
96 return (_U_Qfcmp (a
, b
, QCMP_INV
| QCMP_EQ
| QCMP_GT
) != 0);
100 _U_Qflt (long double a
, long double b
)
102 return (_U_Qfcmp (a
, b
, QCMP_INV
| QCMP_LT
) != 0);
106 _U_Qfle (long double a
, long double b
)
108 return (_U_Qfcmp (a
, b
, QCMP_INV
| QCMP_EQ
| QCMP_LT
) != 0);
112 _U_Qfltgt (long double a
, long double b
)
114 return (_U_Qfcmp (a
, b
, QCMP_INV
| QCMP_LT
| QCMP_GT
) != 0);
118 _U_Qfunle (long double a
, long double b
)
120 return (_U_Qfcmp (a
, b
, QCMP_INV
| QCMP_UNORD
| QCMP_EQ
| QCMP_LT
) != 0);
124 _U_Qfunlt (long double a
, long double b
)
126 return (_U_Qfcmp (a
, b
, QCMP_INV
| QCMP_UNORD
| QCMP_LT
) != 0);
130 _U_Qfunge (long double a
, long double b
)
132 return (_U_Qfcmp (a
, b
, QCMP_INV
| QCMP_UNORD
| QCMP_EQ
| QCMP_GT
) != 0);
136 _U_Qfungt (long double a
, long double b
)
138 return (_U_Qfcmp (a
, b
, QCMP_INV
| QCMP_UNORD
| QCMP_GT
) != 0);
142 _U_Qfuneq (long double a
, long double b
)
144 return (_U_Qfcmp (a
, b
, QCMP_INV
| QCMP_UNORD
| QCMP_EQ
) != 0);
148 _U_Qfunord (long double a
, long double b
)
150 return (_U_Qfcmp (a
, b
, QCMP_INV
| QCMP_UNORD
) != 0);
154 _U_Qford (long double a
, long double b
)
156 return (_U_Qfcmp (a
, b
, QCMP_INV
| QCMP_EQ
| QCMP_LT
| QCMP_GT
) != 0);
160 _U_Qfcomp (long double a
, long double b
)
162 if (_U_Qfcmp (a
, b
, QCMP_EQ
) == 0)
165 return (_U_Qfcmp (a
, b
, QCMP_UNORD
| QCMP_EQ
| QCMP_GT
) != 0 ? 1 : -1);
169 /* Negate long double A. */
171 _U_Qfneg (long double a
)
180 u
.i
[0] ^= 0x80000000;
185 /* This routine is only necessary for the PA64 port; for reasons unknown
186 _U_Qfcnvfxt_quad_to_sgl returns the integer in the high 32bits of the
187 return value. Ugh. */
189 __U_Qfcnvfxt_quad_to_sgl (long double a
)
191 return _U_Qfcnvfxt_quad_to_sgl (a
) >> 32;
195 /* HP only has signed conversion in the C library, so need to synthesize
196 unsigned versions. */
198 _U_Qfcnvfxt_quad_to_usgl (long double a
)
200 extern long long _U_Qfcnvfxt_quad_to_dbl (long double a
);
201 return (unsigned int) _U_Qfcnvfxt_quad_to_dbl (a
);
205 _U_Qfcnvxf_usgl_to_quad (unsigned int a
)
207 extern long double _U_Qfcnvxf_dbl_to_quad (long long);
208 return _U_Qfcnvxf_dbl_to_quad ((long long) a
);
212 unsigned long long u
[2];
217 _U_Qfcnvfxt_quad_to_udbl (long double a
)
219 extern quad_type
_U_Qfcnvfxt_quad_to_quad (long double a
);
221 u
= _U_Qfcnvfxt_quad_to_quad(a
);
226 _U_Qfcnvxf_udbl_to_quad (unsigned long long a
)
228 extern long double _U_Qfcnvxf_quad_to_quad (quad_type a
);
232 return _U_Qfcnvxf_quad_to_quad (u
);