/* Subroutines for long double support. | |

Copyright (C) 2000-2023 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); | |

} |