1 /* Subroutines for long double support.
2 Copyright (C) 2000, 2002, 2004, 2005 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, which takes a
31 magic number as its third argument, that indicates what to do.
32 The return value is an integer to be compared against zero. */
34 QCMP_INV = 1, /* Raise FP_INVALID on SNaN as a side effect. */
41 int _U_Qfcmp (long double a, long double b, int);
42 long _U_Qfcnvfxt_quad_to_sgl (long double);
44 int _U_Qfeq (long double, long double);
45 int _U_Qfne (long double, long double);
46 int _U_Qfgt (long double, long double);
47 int _U_Qfge (long double, long double);
48 int _U_Qflt (long double, long double);
49 int _U_Qfle (long double, long double);
50 int _U_Qfltgt (long double, long double);
51 int _U_Qfunle (long double, long double);
52 int _U_Qfunlt (long double, long double);
53 int _U_Qfunge (long double, long double);
54 int _U_Qfungt (long double, long double);
55 int _U_Qfuneq (long double, long double);
56 int _U_Qfunord (long double, long double);
57 int _U_Qford (long double, long double);
59 int _U_Qfcomp (long double, long double);
61 long double _U_Qfneg (long double);
64 int __U_Qfcnvfxt_quad_to_sgl (long double);
66 unsigned int _U_Qfcnvfxt_quad_to_usgl(long double);
67 long double _U_Qfcnvxf_usgl_to_quad (unsigned int);
68 unsigned long long _U_Qfcnvfxt_quad_to_udbl(long double);
69 long double _U_Qfcnvxf_udbl_to_quad (unsigned long long);
72 _U_Qfeq (long double a, long double b)
74 return (_U_Qfcmp (a, b, QCMP_EQ) != 0);
78 _U_Qfne (long double a, long double b)
80 return (_U_Qfcmp (a, b, QCMP_EQ) == 0);
84 _U_Qfgt (long double a, long double b)
86 return (_U_Qfcmp (a, b, QCMP_INV | QCMP_GT) != 0);
90 _U_Qfge (long double a, long double b)
92 return (_U_Qfcmp (a, b, QCMP_INV | QCMP_EQ | QCMP_GT) != 0);
96 _U_Qflt (long double a, long double b)
98 return (_U_Qfcmp (a, b, QCMP_INV | QCMP_LT) != 0);
102 _U_Qfle (long double a, long double b)
104 return (_U_Qfcmp (a, b, QCMP_INV | QCMP_EQ | QCMP_LT) != 0);
108 _U_Qfltgt (long double a, long double b)
110 return (_U_Qfcmp (a, b, QCMP_INV | QCMP_LT | QCMP_GT) != 0);
114 _U_Qfunle (long double a, long double b)
116 return (_U_Qfcmp (a, b, QCMP_INV | QCMP_UNORD | QCMP_EQ | QCMP_LT) != 0);
120 _U_Qfunlt (long double a, long double b)
122 return (_U_Qfcmp (a, b, QCMP_INV | QCMP_UNORD | QCMP_LT) != 0);
126 _U_Qfunge (long double a, long double b)
128 return (_U_Qfcmp (a, b, QCMP_INV | QCMP_UNORD | QCMP_EQ | QCMP_GT) != 0);
132 _U_Qfungt (long double a, long double b)
134 return (_U_Qfcmp (a, b, QCMP_INV | QCMP_UNORD | QCMP_GT) != 0);
138 _U_Qfuneq (long double a, long double b)
140 return (_U_Qfcmp (a, b, QCMP_INV | QCMP_UNORD | QCMP_EQ) != 0);
144 _U_Qfunord (long double a, long double b)
146 return (_U_Qfcmp (a, b, QCMP_INV | QCMP_UNORD) != 0);
150 _U_Qford (long double a, long double b)
152 return (_U_Qfcmp (a, b, QCMP_INV | QCMP_EQ | QCMP_LT | QCMP_GT) != 0);
156 _U_Qfcomp (long double a, long double b)
158 if (_U_Qfcmp (a, b, QCMP_EQ) == 0)
161 return (_U_Qfcmp (a, b, QCMP_UNORD | QCMP_EQ | QCMP_GT) != 0 ? 1 : -1);
165 /* Negate long double A. */
167 _U_Qfneg (long double a)
176 u.i[0] ^= 0x80000000;
181 /* This routine is only necessary for the PA64 port; for reasons unknown
182 _U_Qfcnvfxt_quad_to_sgl returns the integer in the high 32bits of the
183 return value. Ugh. */
185 __U_Qfcnvfxt_quad_to_sgl (long double a)
187 return _U_Qfcnvfxt_quad_to_sgl (a) >> 32;
191 /* HP only has signed conversion in the C library, so need to synthesize
192 unsigned versions. */
194 _U_Qfcnvfxt_quad_to_usgl (long double a)
196 extern long long _U_Qfcnvfxt_quad_to_dbl (long double a);
197 return (unsigned int) _U_Qfcnvfxt_quad_to_dbl (a);
201 _U_Qfcnvxf_usgl_to_quad (unsigned int a)
203 extern long double _U_Qfcnvxf_dbl_to_quad (long long);
204 return _U_Qfcnvxf_dbl_to_quad ((long long) a);
208 unsigned long long u[2];
213 _U_Qfcnvfxt_quad_to_udbl (long double a)
215 extern quad_type _U_Qfcnvfxt_quad_to_quad (long double a);
217 u = _U_Qfcnvfxt_quad_to_quad(a);
222 _U_Qfcnvxf_udbl_to_quad (unsigned long long a)
224 extern long double _U_Qfcnvxf_quad_to_quad (quad_type a);
228 return _U_Qfcnvxf_quad_to_quad (u);