| /* Subroutines for long double support. |
| Copyright (C) 2000, 2002, 2004, 2005, 2006 Free Software Foundation, Inc. |
| |
| This file is part of GCC. |
| |
| GCC is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| In addition to the permissions in the GNU General Public License, the |
| Free Software Foundation gives you unlimited permission to link the |
| compiled version of this file into combinations with other programs, |
| and to distribute those combinations without any restriction coming |
| from the use of this file. (The General Public License restrictions |
| do apply in other respects; for example, they cover modification of |
| the file, and distribution when not linked into a combine |
| executable.) |
| |
| GCC is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GCC; see the file COPYING. If not, write to |
| the Free Software Foundation, 51 Franklin Street, Fifth Floor, |
| Boston, MA 02110-1301, USA. */ |
| |
| /* HPUX TFmode compare requires a library call to _U_Qfcmp. It takes |
| a magic number as its third argument which indicates what to do. |
| The return value is an integer to be compared against zero. The |
| comparison conditions are the same as those listed in Table 8-12 |
| of the PA-RISC 2.0 Architecture book for the fcmp instruction. */ |
| |
| /* Raise FP_INVALID on SNaN as a side effect. */ |
| #define QCMP_INV 1 |
| |
| /* Comparison relations. */ |
| #define QCMP_UNORD 2 |
| #define QCMP_EQ 4 |
| #define QCMP_LT 8 |
| #define QCMP_GT 16 |
| |
| int _U_Qfcmp (long double a, long double b, int); |
| long _U_Qfcnvfxt_quad_to_sgl (long double); |
| |
| int _U_Qfeq (long double, long double); |
| int _U_Qfne (long double, long double); |
| int _U_Qfgt (long double, long double); |
| int _U_Qfge (long double, long double); |
| int _U_Qflt (long double, long double); |
| int _U_Qfle (long double, long double); |
| int _U_Qfltgt (long double, long double); |
| int _U_Qfunle (long double, long double); |
| int _U_Qfunlt (long double, long double); |
| int _U_Qfunge (long double, long double); |
| int _U_Qfungt (long double, long double); |
| int _U_Qfuneq (long double, long double); |
| int _U_Qfunord (long double, long double); |
| int _U_Qford (long double, long double); |
| |
| int _U_Qfcomp (long double, long double); |
| |
| long double _U_Qfneg (long double); |
| |
| #ifdef __LP64__ |
| int __U_Qfcnvfxt_quad_to_sgl (long double); |
| #endif |
| unsigned int _U_Qfcnvfxt_quad_to_usgl(long double); |
| long double _U_Qfcnvxf_usgl_to_quad (unsigned int); |
| unsigned long long _U_Qfcnvfxt_quad_to_udbl(long double); |
| long double _U_Qfcnvxf_udbl_to_quad (unsigned long long); |
| |
| int |
| _U_Qfeq (long double a, long double b) |
| { |
| return (_U_Qfcmp (a, b, QCMP_EQ) != 0); |
| } |
| |
| int |
| _U_Qfne (long double a, long double b) |
| { |
| return (_U_Qfcmp (a, b, QCMP_EQ) == 0); |
| } |
| |
| int |
| _U_Qfgt (long double a, long double b) |
| { |
| return (_U_Qfcmp (a, b, QCMP_INV | QCMP_GT) != 0); |
| } |
| |
| int |
| _U_Qfge (long double a, long double b) |
| { |
| return (_U_Qfcmp (a, b, QCMP_INV | QCMP_EQ | QCMP_GT) != 0); |
| } |
| |
| int |
| _U_Qflt (long double a, long double b) |
| { |
| return (_U_Qfcmp (a, b, QCMP_INV | QCMP_LT) != 0); |
| } |
| |
| int |
| _U_Qfle (long double a, long double b) |
| { |
| return (_U_Qfcmp (a, b, QCMP_INV | QCMP_EQ | QCMP_LT) != 0); |
| } |
| |
| int |
| _U_Qfltgt (long double a, long double b) |
| { |
| return (_U_Qfcmp (a, b, QCMP_INV | QCMP_LT | QCMP_GT) != 0); |
| } |
| |
| int |
| _U_Qfunle (long double a, long double b) |
| { |
| return (_U_Qfcmp (a, b, QCMP_INV | QCMP_UNORD | QCMP_EQ | QCMP_LT) != 0); |
| } |
| |
| int |
| _U_Qfunlt (long double a, long double b) |
| { |
| return (_U_Qfcmp (a, b, QCMP_INV | QCMP_UNORD | QCMP_LT) != 0); |
| } |
| |
| int |
| _U_Qfunge (long double a, long double b) |
| { |
| return (_U_Qfcmp (a, b, QCMP_INV | QCMP_UNORD | QCMP_EQ | QCMP_GT) != 0); |
| } |
| |
| int |
| _U_Qfungt (long double a, long double b) |
| { |
| return (_U_Qfcmp (a, b, QCMP_INV | QCMP_UNORD | QCMP_GT) != 0); |
| } |
| |
| int |
| _U_Qfuneq (long double a, long double b) |
| { |
| return (_U_Qfcmp (a, b, QCMP_INV | QCMP_UNORD | QCMP_EQ) != 0); |
| } |
| |
| int |
| _U_Qfunord (long double a, long double b) |
| { |
| return (_U_Qfcmp (a, b, QCMP_INV | QCMP_UNORD) != 0); |
| } |
| |
| int |
| _U_Qford (long double a, long double b) |
| { |
| return (_U_Qfcmp (a, b, QCMP_INV | QCMP_EQ | QCMP_LT | QCMP_GT) != 0); |
| } |
| |
| int |
| _U_Qfcomp (long double a, long double b) |
| { |
| if (_U_Qfcmp (a, b, QCMP_EQ) == 0) |
| return 0; |
| |
| return (_U_Qfcmp (a, b, QCMP_UNORD | QCMP_EQ | QCMP_GT) != 0 ? 1 : -1); |
| } |
| |
| |
| /* Negate long double A. */ |
| long double |
| _U_Qfneg (long double a) |
| { |
| union |
| { |
| long double ld; |
| int i[4]; |
| } u; |
| |
| u.ld = a; |
| u.i[0] ^= 0x80000000; |
| return u.ld; |
| } |
| |
| #ifdef __LP64__ |
| /* This routine is only necessary for the PA64 port; for reasons unknown |
| _U_Qfcnvfxt_quad_to_sgl returns the integer in the high 32bits of the |
| return value. Ugh. */ |
| int |
| __U_Qfcnvfxt_quad_to_sgl (long double a) |
| { |
| return _U_Qfcnvfxt_quad_to_sgl (a) >> 32; |
| } |
| #endif |
| |
| /* HP only has signed conversion in the C library, so need to synthesize |
| unsigned versions. */ |
| unsigned int |
| _U_Qfcnvfxt_quad_to_usgl (long double a) |
| { |
| extern long long _U_Qfcnvfxt_quad_to_dbl (long double a); |
| return (unsigned int) _U_Qfcnvfxt_quad_to_dbl (a); |
| } |
| |
| long double |
| _U_Qfcnvxf_usgl_to_quad (unsigned int a) |
| { |
| extern long double _U_Qfcnvxf_dbl_to_quad (long long); |
| return _U_Qfcnvxf_dbl_to_quad ((long long) a); |
| } |
| |
| typedef union { |
| unsigned long long u[2]; |
| long double d[1]; |
| } quad_type; |
| |
| unsigned long long |
| _U_Qfcnvfxt_quad_to_udbl (long double a) |
| { |
| extern quad_type _U_Qfcnvfxt_quad_to_quad (long double a); |
| quad_type u; |
| u = _U_Qfcnvfxt_quad_to_quad(a); |
| return u.u[1]; |
| } |
| |
| long double |
| _U_Qfcnvxf_udbl_to_quad (unsigned long long a) |
| { |
| extern long double _U_Qfcnvxf_quad_to_quad (quad_type a); |
| quad_type u; |
| u.u[0] = 0; |
| u.u[1] = a; |
| return _U_Qfcnvxf_quad_to_quad (u); |
| } |