From d17262c6ea0820f021f5e345a65d01e0fe56c758 Mon Sep 17 00:00:00 2001 From: hujianwei Date: Sat, 5 Nov 2022 13:29:25 +0000 Subject: [PATCH] * port_gnu.h: New file. --- port_gnu.h | 175 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 175 insertions(+) create mode 100644 port_gnu.h diff --git a/port_gnu.h b/port_gnu.h new file mode 100644 index 0000000..8de073c --- /dev/null +++ b/port_gnu.h @@ -0,0 +1,175 @@ +/* Wayland compositor running on top of an X server. + +Copyright (C) 2022 to various contributors. + +This file is part of 12to11. + +12to11 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 of the License, or (at your +option) any later version. + +12to11 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 12to11. If not, see . */ + +/* Copyright (C) 2001-2022 Free Software Foundation, Inc. + +This program is free software: you can redistribute it and/or modify +it under the terms of the GNU Lesser General Public License as +published by the Free Software Foundation; either version 2.1 of the +License, or (at your option) any later version. + +This program 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 +Lesser General Public License for more details. + +You should have received a copy of the GNU Lesser General Public +License along with this program. + +If not, see . */ + +#ifndef IntAddWrapv + +#define _GL_INT_CONVERT(e, v) ((1 ? 0 : (e)) + (v)) +#define _GL_INT_NEGATE_CONVERT(e, v) ((1 ? 0 : (e)) - (v)) +#define _GL_TYPE_SIGNED(t) (! ((t) 0 < (t) -1)) +#define _GL_EXPR_SIGNED(e) (_GL_INT_NEGATE_CONVERT (e, 1) < 0) +#define _GL_TYPE_WIDTH(t) (sizeof (t) * CHAR_BIT) + +#define _GL_INT_OP_WRAPV_VIA_UNSIGNED(a, b, op, ut, t) \ + ((t) ((ut) (a) op (ut) (b))) + +#define _GL_INT_NEGATE_RANGE_OVERFLOW(a, min, max) \ + ((min) < 0 ? (a) < - (max) : 0 < (a)) + +#define _GL_INT_MINIMUM(e) \ + (_GL_EXPR_SIGNED (e) \ + ? ~ _GL_SIGNED_INT_MAXIMUM (e) \ + : _GL_INT_CONVERT (e, 0)) + +#define _GL_INT_MAXIMUM(e) \ + (_GL_EXPR_SIGNED (e) \ + ? _GL_SIGNED_INT_MAXIMUM (e) \ + : _GL_INT_NEGATE_CONVERT (e, 1)) + +#define _GL_SIGNED_INT_MAXIMUM(e) \ + (((_GL_INT_CONVERT (e, 1) << (_GL_TYPE_WIDTH (+ (e)) - 2)) - 1) * 2 + 1) + +#define _GL_INT_OP_CALC(a, b, r, op, overflow, ut, t, tmin, tmax) \ + (overflow (a, b, tmin, tmax) \ + ? (*(r) = _GL_INT_OP_WRAPV_VIA_UNSIGNED (a, b, op, ut, t), 1) \ + : (*(r) = _GL_INT_OP_WRAPV_VIA_UNSIGNED (a, b, op, ut, t), 0)) + +# define _GL_INT_NEGATE_OVERFLOW(a) \ + _GL_INT_NEGATE_RANGE_OVERFLOW (a, _GL_INT_MINIMUM (a), _GL_INT_MAXIMUM (a)) + +#define _GL_INT_ADD_RANGE_OVERFLOW(a, b, tmin, tmax) \ + ((b) < 0 \ + ? (((tmin) \ + ? ((_GL_EXPR_SIGNED (_GL_INT_CONVERT (a, (tmin) - (b))) || (b) < (tmin)) \ + && (a) < (tmin) - (b)) \ + : (a) <= -1 - (b)) \ + || ((_GL_EXPR_SIGNED (a) ? 0 <= (a) : (tmax) < (a)) && (tmax) < (a) + (b))) \ + : (a) < 0 \ + ? (((tmin) \ + ? ((_GL_EXPR_SIGNED (_GL_INT_CONVERT (b, (tmin) - (a))) || (a) < (tmin)) \ + && (b) < (tmin) - (a)) \ + : (b) <= -1 - (a)) \ + || ((_GL_EXPR_SIGNED (_GL_INT_CONVERT (a, b)) || (tmax) < (b)) \ + && (tmax) < (a) + (b))) \ + : (tmax) < (b) || (tmax) - (b) < (a)) +#define _GL_INT_SUBTRACT_RANGE_OVERFLOW(a, b, tmin, tmax) \ + (((a) < 0) == ((b) < 0) \ + ? ((a) < (b) \ + ? !(tmin) || -1 - (tmin) < (b) - (a) - 1 \ + : (tmax) < (a) - (b)) \ + : (a) < 0 \ + ? ((!_GL_EXPR_SIGNED (_GL_INT_CONVERT ((a) - (tmin), b)) && (a) - (tmin) < 0) \ + || (a) - (tmin) < (b)) \ + : ((! (_GL_EXPR_SIGNED (_GL_INT_CONVERT (tmax, b)) \ + && _GL_EXPR_SIGNED (_GL_INT_CONVERT ((tmax) + (b), a))) \ + && (tmax) <= -1 - (b)) \ + || (tmax) + (b) < (a))) +#define _GL_INT_MULTIPLY_RANGE_OVERFLOW(a, b, tmin, tmax) \ + ((b) < 0 \ + ? ((a) < 0 \ + ? (_GL_EXPR_SIGNED (_GL_INT_CONVERT (tmax, b)) \ + ? (a) < (tmax) / (b) \ + : ((_GL_INT_NEGATE_OVERFLOW (b) \ + ? _GL_INT_CONVERT (b, tmax) >> (_GL_TYPE_WIDTH (+ (b)) - 1) \ + : (tmax) / -(b)) \ + <= -1 - (a))) \ + : _GL_INT_NEGATE_OVERFLOW (_GL_INT_CONVERT (b, tmin)) && (b) == -1 \ + ? (_GL_EXPR_SIGNED (a) \ + ? 0 < (a) + (tmin) \ + : 0 < (a) && -1 - (tmin) < (a) - 1) \ + : (tmin) / (b) < (a)) \ + : (b) == 0 \ + ? 0 \ + : ((a) < 0 \ + ? (_GL_INT_NEGATE_OVERFLOW (_GL_INT_CONVERT (a, tmin)) && (a) == -1 \ + ? (_GL_EXPR_SIGNED (b) ? 0 < (b) + (tmin) : -1 - (tmin) < (b) - 1) \ + : (tmin) / (a) < (b)) \ + : (tmax) / (b) < (a))) + +#define _GL_INT_OP_WRAPV(a, b, r, op, overflow) \ + (_Generic \ + (*(r), \ + signed char: \ + _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, \ + signed char, SCHAR_MIN, SCHAR_MAX), \ + unsigned char: \ + _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, \ + unsigned char, 0, UCHAR_MAX), \ + short int: \ + _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, \ + short int, SHRT_MIN, SHRT_MAX), \ + unsigned short int: \ + _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, \ + unsigned short int, 0, USHRT_MAX), \ + int: \ + _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, \ + int, INT_MIN, INT_MAX), \ + unsigned int: \ + _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, \ + unsigned int, 0, UINT_MAX), \ + long int: \ + _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned long int, \ + long int, LONG_MIN, LONG_MAX), \ + unsigned long int: \ + _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned long int, \ + unsigned long int, 0, ULONG_MAX), \ + long long int: \ + _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned long long int, \ + long long int, LLONG_MIN, LLONG_MAX), \ + unsigned long long int: \ + _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned long long int, \ + unsigned long long int, 0, ULLONG_MAX))) + +#define _GL_INT_ADD_WRAPV(a, b, r) \ + _GL_INT_OP_WRAPV (a, b, r, +, _GL_INT_ADD_RANGE_OVERFLOW) +#define _GL_INT_SUBTRACT_WRAPV(a, b, r) \ + _GL_INT_OP_WRAPV (a, b, r, -, _GL_INT_SUBTRACT_RANGE_OVERFLOW) +#define _GL_INT_MULTIPLY_WRAPV(a, b, r) \ + _GL_INT_OP_WRAPV (a, b, r, *, _GL_INT_MULTIPLY_RANGE_OVERFLOW) + +#define IntAddWrapv(a, b, r) _GL_INT_ADD_WRAPV (a, b, r) +#define IntSubtractWrapv(a, b, r) _GL_INT_SUBTRACT_WRAPV (a, b, r) +#define IntMultiplyWrapv(a, b, r) _GL_INT_MULTIPLY_WRAPV (a, b, r) + +#endif + +#ifndef Popcount +#define NeedPortPopcount + +extern int PortPopcount (unsigned long long int); + +#define Popcount(number) (PortPopcount (number)) + +#endif