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* port_gnu.h: New file.
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port_gnu.h
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port_gnu.h
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/* Wayland compositor running on top of an X server.
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Copyright (C) 2022 to various contributors.
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This file is part of 12to11.
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12to11 is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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12to11 is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with 12to11. If not, see <https://www.gnu.org/licenses/>. */
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/* Copyright (C) 2001-2022 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this program.
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If not, see <https://www.gnu.org/licenses/>. */
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#ifndef IntAddWrapv
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#define _GL_INT_CONVERT(e, v) ((1 ? 0 : (e)) + (v))
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#define _GL_INT_NEGATE_CONVERT(e, v) ((1 ? 0 : (e)) - (v))
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#define _GL_TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
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#define _GL_EXPR_SIGNED(e) (_GL_INT_NEGATE_CONVERT (e, 1) < 0)
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#define _GL_TYPE_WIDTH(t) (sizeof (t) * CHAR_BIT)
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#define _GL_INT_OP_WRAPV_VIA_UNSIGNED(a, b, op, ut, t) \
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((t) ((ut) (a) op (ut) (b)))
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#define _GL_INT_NEGATE_RANGE_OVERFLOW(a, min, max) \
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((min) < 0 ? (a) < - (max) : 0 < (a))
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#define _GL_INT_MINIMUM(e) \
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(_GL_EXPR_SIGNED (e) \
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? ~ _GL_SIGNED_INT_MAXIMUM (e) \
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: _GL_INT_CONVERT (e, 0))
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#define _GL_INT_MAXIMUM(e) \
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(_GL_EXPR_SIGNED (e) \
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? _GL_SIGNED_INT_MAXIMUM (e) \
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: _GL_INT_NEGATE_CONVERT (e, 1))
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#define _GL_SIGNED_INT_MAXIMUM(e) \
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(((_GL_INT_CONVERT (e, 1) << (_GL_TYPE_WIDTH (+ (e)) - 2)) - 1) * 2 + 1)
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#define _GL_INT_OP_CALC(a, b, r, op, overflow, ut, t, tmin, tmax) \
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(overflow (a, b, tmin, tmax) \
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? (*(r) = _GL_INT_OP_WRAPV_VIA_UNSIGNED (a, b, op, ut, t), 1) \
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: (*(r) = _GL_INT_OP_WRAPV_VIA_UNSIGNED (a, b, op, ut, t), 0))
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# define _GL_INT_NEGATE_OVERFLOW(a) \
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_GL_INT_NEGATE_RANGE_OVERFLOW (a, _GL_INT_MINIMUM (a), _GL_INT_MAXIMUM (a))
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#define _GL_INT_ADD_RANGE_OVERFLOW(a, b, tmin, tmax) \
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((b) < 0 \
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? (((tmin) \
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? ((_GL_EXPR_SIGNED (_GL_INT_CONVERT (a, (tmin) - (b))) || (b) < (tmin)) \
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&& (a) < (tmin) - (b)) \
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: (a) <= -1 - (b)) \
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|| ((_GL_EXPR_SIGNED (a) ? 0 <= (a) : (tmax) < (a)) && (tmax) < (a) + (b))) \
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: (a) < 0 \
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? (((tmin) \
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? ((_GL_EXPR_SIGNED (_GL_INT_CONVERT (b, (tmin) - (a))) || (a) < (tmin)) \
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&& (b) < (tmin) - (a)) \
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: (b) <= -1 - (a)) \
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|| ((_GL_EXPR_SIGNED (_GL_INT_CONVERT (a, b)) || (tmax) < (b)) \
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&& (tmax) < (a) + (b))) \
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: (tmax) < (b) || (tmax) - (b) < (a))
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#define _GL_INT_SUBTRACT_RANGE_OVERFLOW(a, b, tmin, tmax) \
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(((a) < 0) == ((b) < 0) \
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? ((a) < (b) \
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? !(tmin) || -1 - (tmin) < (b) - (a) - 1 \
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: (tmax) < (a) - (b)) \
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: (a) < 0 \
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? ((!_GL_EXPR_SIGNED (_GL_INT_CONVERT ((a) - (tmin), b)) && (a) - (tmin) < 0) \
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|| (a) - (tmin) < (b)) \
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: ((! (_GL_EXPR_SIGNED (_GL_INT_CONVERT (tmax, b)) \
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&& _GL_EXPR_SIGNED (_GL_INT_CONVERT ((tmax) + (b), a))) \
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&& (tmax) <= -1 - (b)) \
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|| (tmax) + (b) < (a)))
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#define _GL_INT_MULTIPLY_RANGE_OVERFLOW(a, b, tmin, tmax) \
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((b) < 0 \
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? ((a) < 0 \
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? (_GL_EXPR_SIGNED (_GL_INT_CONVERT (tmax, b)) \
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? (a) < (tmax) / (b) \
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: ((_GL_INT_NEGATE_OVERFLOW (b) \
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? _GL_INT_CONVERT (b, tmax) >> (_GL_TYPE_WIDTH (+ (b)) - 1) \
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: (tmax) / -(b)) \
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<= -1 - (a))) \
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: _GL_INT_NEGATE_OVERFLOW (_GL_INT_CONVERT (b, tmin)) && (b) == -1 \
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? (_GL_EXPR_SIGNED (a) \
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? 0 < (a) + (tmin) \
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: 0 < (a) && -1 - (tmin) < (a) - 1) \
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: (tmin) / (b) < (a)) \
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: (b) == 0 \
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? 0 \
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: ((a) < 0 \
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? (_GL_INT_NEGATE_OVERFLOW (_GL_INT_CONVERT (a, tmin)) && (a) == -1 \
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? (_GL_EXPR_SIGNED (b) ? 0 < (b) + (tmin) : -1 - (tmin) < (b) - 1) \
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: (tmin) / (a) < (b)) \
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: (tmax) / (b) < (a)))
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#define _GL_INT_OP_WRAPV(a, b, r, op, overflow) \
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(_Generic \
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(*(r), \
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signed char: \
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_GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, \
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signed char, SCHAR_MIN, SCHAR_MAX), \
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unsigned char: \
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_GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, \
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unsigned char, 0, UCHAR_MAX), \
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short int: \
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_GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, \
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short int, SHRT_MIN, SHRT_MAX), \
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unsigned short int: \
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_GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, \
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unsigned short int, 0, USHRT_MAX), \
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int: \
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_GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, \
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int, INT_MIN, INT_MAX), \
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unsigned int: \
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_GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, \
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unsigned int, 0, UINT_MAX), \
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long int: \
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_GL_INT_OP_CALC (a, b, r, op, overflow, unsigned long int, \
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long int, LONG_MIN, LONG_MAX), \
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unsigned long int: \
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_GL_INT_OP_CALC (a, b, r, op, overflow, unsigned long int, \
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unsigned long int, 0, ULONG_MAX), \
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long long int: \
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_GL_INT_OP_CALC (a, b, r, op, overflow, unsigned long long int, \
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long long int, LLONG_MIN, LLONG_MAX), \
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unsigned long long int: \
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_GL_INT_OP_CALC (a, b, r, op, overflow, unsigned long long int, \
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unsigned long long int, 0, ULLONG_MAX)))
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#define _GL_INT_ADD_WRAPV(a, b, r) \
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_GL_INT_OP_WRAPV (a, b, r, +, _GL_INT_ADD_RANGE_OVERFLOW)
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#define _GL_INT_SUBTRACT_WRAPV(a, b, r) \
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_GL_INT_OP_WRAPV (a, b, r, -, _GL_INT_SUBTRACT_RANGE_OVERFLOW)
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#define _GL_INT_MULTIPLY_WRAPV(a, b, r) \
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_GL_INT_OP_WRAPV (a, b, r, *, _GL_INT_MULTIPLY_RANGE_OVERFLOW)
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#define IntAddWrapv(a, b, r) _GL_INT_ADD_WRAPV (a, b, r)
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#define IntSubtractWrapv(a, b, r) _GL_INT_SUBTRACT_WRAPV (a, b, r)
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#define IntMultiplyWrapv(a, b, r) _GL_INT_MULTIPLY_WRAPV (a, b, r)
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#endif
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#ifndef Popcount
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#define NeedPortPopcount
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extern int PortPopcount (unsigned long long int);
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#define Popcount(number) (PortPopcount (number))
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#endif
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