8d9254fc8a
From-SVN: r279813
246 lines
5.9 KiB
C
246 lines
5.9 KiB
C
/* Subroutines for long double support.
|
|
Copyright (C) 2000-2020 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 3, or (at your option)
|
|
any later version.
|
|
|
|
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.
|
|
|
|
Under Section 7 of GPL version 3, you are granted additional
|
|
permissions described in the GCC Runtime Library Exception, version
|
|
3.1, as published by the Free Software Foundation.
|
|
|
|
You should have received a copy of the GNU General Public License and
|
|
a copy of the GCC Runtime Library Exception along with this program;
|
|
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
/* 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);
|
|
long double _U_Qfcopysign (long double, 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;
|
|
}
|
|
|
|
/* Return long double A with sign changed to sign of long double B. */
|
|
long double
|
|
_U_Qfcopysign (long double a, long double b)
|
|
{
|
|
union
|
|
{
|
|
long double ld;
|
|
int i[4];
|
|
} ua, ub;
|
|
|
|
ua.ld = a;
|
|
ub.ld = b;
|
|
ua.i[0] &= 0x7fffffff;
|
|
ua.i[0] |= (0x80000000 & ub.i[0]);
|
|
return ua.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);
|
|
}
|