736 lines
23 KiB
C++
736 lines
23 KiB
C++
/* SPDX-FileCopyrightText: 2001-2002 NaN Holding BV. All rights reserved.
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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/* Use a define instead of `#pragma once` because of `BLI_memory_utils.h` */
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#ifndef __BLI_UTILDEFINES_H__
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#define __BLI_UTILDEFINES_H__
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/** \file
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* \ingroup bli
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*/
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/* avoid many includes for now */
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#include "BLI_compiler_compat.h"
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#include "BLI_sys_types.h"
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#include "BLI_utildefines_variadic.h"
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/* We could remove in future. */
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#include "BLI_assert.h"
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/* include after _VA_NARGS macro */
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#include "BLI_compiler_typecheck.h"
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#ifdef __cplusplus
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# include <type_traits>
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# include <utility>
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extern "C" {
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#endif
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/* -------------------------------------------------------------------- */
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/** \name Min/Max Macros
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* \{ */
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#ifndef __cplusplus
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# define MIN2(a, b) ((a) < (b) ? (a) : (b))
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# define MAX2(a, b) ((a) > (b) ? (a) : (b))
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#endif
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#define INIT_MINMAX(min, max) \
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{ \
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(min)[0] = (min)[1] = (min)[2] = 1.0e30f; \
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(max)[0] = (max)[1] = (max)[2] = -1.0e30f; \
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} \
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(void)0
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#define INIT_MINMAX2(min, max) \
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{ \
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(min)[0] = (min)[1] = 1.0e30f; \
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(max)[0] = (max)[1] = -1.0e30f; \
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} \
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(void)0
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/** \} */
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/* -------------------------------------------------------------------- */
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/** \name Swap/Shift Macros
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* \{ */
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#define SWAP(type, a, b) \
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{ \
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type sw_ap; \
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CHECK_TYPE(a, type); \
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CHECK_TYPE(b, type); \
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sw_ap = (a); \
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(a) = (b); \
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(b) = sw_ap; \
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} \
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(void)0
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/* shift around elements */
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#define SHIFT3(type, a, b, c) \
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{ \
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type tmp; \
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CHECK_TYPE(a, type); \
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CHECK_TYPE(b, type); \
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CHECK_TYPE(c, type); \
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tmp = a; \
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a = c; \
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c = b; \
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b = tmp; \
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} \
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(void)0
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#define SHIFT4(type, a, b, c, d) \
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{ \
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type tmp; \
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CHECK_TYPE(a, type); \
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CHECK_TYPE(b, type); \
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CHECK_TYPE(c, type); \
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CHECK_TYPE(d, type); \
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tmp = a; \
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a = d; \
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d = c; \
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c = b; \
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b = tmp; \
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} \
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(void)0
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/** \} */
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/* -------------------------------------------------------------------- */
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/** \name Equal to Any Element (ELEM) Macro
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* \{ */
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/* Manual line breaks for readability. */
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/* clang-format off */
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/* ELEM#(v, ...): is the first arg equal any others? */
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/* internal helpers. */
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#define _VA_ELEM2(v, a) ((v) == (a))
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#define _VA_ELEM3(v, a, b) \
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(_VA_ELEM2(v, a) || _VA_ELEM2(v, b))
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#define _VA_ELEM4(v, a, b, c) \
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(_VA_ELEM3(v, a, b) || _VA_ELEM2(v, c))
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#define _VA_ELEM5(v, a, b, c, d) \
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(_VA_ELEM4(v, a, b, c) || _VA_ELEM2(v, d))
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#define _VA_ELEM6(v, a, b, c, d, e) \
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(_VA_ELEM5(v, a, b, c, d) || _VA_ELEM2(v, e))
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#define _VA_ELEM7(v, a, b, c, d, e, f) \
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(_VA_ELEM6(v, a, b, c, d, e) || _VA_ELEM2(v, f))
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#define _VA_ELEM8(v, a, b, c, d, e, f, g) \
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(_VA_ELEM7(v, a, b, c, d, e, f) || _VA_ELEM2(v, g))
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#define _VA_ELEM9(v, a, b, c, d, e, f, g, h) \
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(_VA_ELEM8(v, a, b, c, d, e, f, g) || _VA_ELEM2(v, h))
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#define _VA_ELEM10(v, a, b, c, d, e, f, g, h, i) \
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(_VA_ELEM9(v, a, b, c, d, e, f, g, h) || _VA_ELEM2(v, i))
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#define _VA_ELEM11(v, a, b, c, d, e, f, g, h, i, j) \
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(_VA_ELEM10(v, a, b, c, d, e, f, g, h, i) || _VA_ELEM2(v, j))
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#define _VA_ELEM12(v, a, b, c, d, e, f, g, h, i, j, k) \
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(_VA_ELEM11(v, a, b, c, d, e, f, g, h, i, j) || _VA_ELEM2(v, k))
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#define _VA_ELEM13(v, a, b, c, d, e, f, g, h, i, j, k, l) \
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(_VA_ELEM12(v, a, b, c, d, e, f, g, h, i, j, k) || _VA_ELEM2(v, l))
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#define _VA_ELEM14(v, a, b, c, d, e, f, g, h, i, j, k, l, m) \
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(_VA_ELEM13(v, a, b, c, d, e, f, g, h, i, j, k, l) || _VA_ELEM2(v, m))
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#define _VA_ELEM15(v, a, b, c, d, e, f, g, h, i, j, k, l, m, n) \
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(_VA_ELEM14(v, a, b, c, d, e, f, g, h, i, j, k, l, m) || _VA_ELEM2(v, n))
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#define _VA_ELEM16(v, a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) \
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(_VA_ELEM15(v, a, b, c, d, e, f, g, h, i, j, k, l, m, n) || _VA_ELEM2(v, o))
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#define _VA_ELEM17(v, a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p) \
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(_VA_ELEM16(v, a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) || _VA_ELEM2(v, p))
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/* clang-format on */
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/* reusable ELEM macro */
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#define ELEM(...) VA_NARGS_CALL_OVERLOAD(_VA_ELEM, __VA_ARGS__)
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/** \} */
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/* -------------------------------------------------------------------- */
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/** \name Simple Math Macros
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* \{ */
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/* Float equality checks. */
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#define IS_EQ(a, b) \
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(CHECK_TYPE_INLINE_NONCONST(a, double), \
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CHECK_TYPE_INLINE_NONCONST(b, double), \
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((fabs((double)((a) - (b))) >= (double)FLT_EPSILON) ? false : true))
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#define IS_EQF(a, b) \
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(CHECK_TYPE_INLINE_NONCONST(a, float), \
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CHECK_TYPE_INLINE_NONCONST(b, float), \
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((fabsf((float)((a) - (b))) >= (float)FLT_EPSILON) ? false : true))
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#define IS_EQT(a, b, c) (((a) > (b)) ? ((((a) - (b)) <= (c))) : (((((b) - (a)) <= (c)))))
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#define IN_RANGE(a, b, c) (((b) < (c)) ? (((b) < (a) && (a) < (c))) : (((c) < (a) && (a) < (b))))
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#define IN_RANGE_INCL(a, b, c) \
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(((b) < (c)) ? (((b) <= (a) && (a) <= (c))) : (((c) <= (a) && (a) <= (b))))
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/**
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* Expands to an integer constant expression evaluating to a close upper bound
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* on the number the number of decimal digits in a value expressible in the
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* integer type given by the argument (if it is a type name) or the integer
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* type of the argument (if it is an expression). The meaning of the resulting
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* expression is unspecified for other arguments.
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* i.e: `DECIMAL_DIGITS_BOUND(uchar)` is equal to 3.
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*/
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#define DECIMAL_DIGITS_BOUND(t) (241 * sizeof(t) / 100 + 1)
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#ifdef __cplusplus
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inline constexpr int64_t is_power_of_2(const int64_t x)
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{
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BLI_assert(x >= 0);
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return (x & (x - 1)) == 0;
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}
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inline constexpr int64_t log2_floor(const int64_t x)
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{
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BLI_assert(x >= 0);
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return x <= 1 ? 0 : 1 + log2_floor(x >> 1);
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}
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inline constexpr int64_t log2_ceil(const int64_t x)
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{
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BLI_assert(x >= 0);
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return (is_power_of_2(int(x))) ? log2_floor(x) : log2_floor(x) + 1;
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}
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inline constexpr int64_t power_of_2_max(const int64_t x)
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{
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BLI_assert(x >= 0);
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return 1ll << log2_ceil(x);
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}
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#endif
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/** \} */
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/* -------------------------------------------------------------------- */
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/** \name Clamp Macros
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* \{ */
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#define CLAMP(a, b, c) \
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{ \
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if ((a) < (b)) { \
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(a) = (b); \
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} \
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else if ((a) > (c)) { \
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(a) = (c); \
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} \
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} \
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(void)0
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#define CLAMP_MAX(a, c) \
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{ \
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if ((a) > (c)) { \
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(a) = (c); \
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} \
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} \
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(void)0
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#define CLAMP_MIN(a, b) \
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{ \
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if ((a) < (b)) { \
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(a) = (b); \
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} \
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} \
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(void)0
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#define CLAMP3(vec, b, c) \
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{ \
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CLAMP((vec)[0], b, c); \
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CLAMP((vec)[1], b, c); \
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CLAMP((vec)[2], b, c); \
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} \
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(void)0
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#define CLAMP3_MIN(vec, b) \
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{ \
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CLAMP_MIN((vec)[0], b); \
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CLAMP_MIN((vec)[1], b); \
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CLAMP_MIN((vec)[2], b); \
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} \
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(void)0
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#define CLAMP4_MIN(vec, b) \
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{ \
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CLAMP_MIN((vec)[0], b); \
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CLAMP_MIN((vec)[1], b); \
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CLAMP_MIN((vec)[2], b); \
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CLAMP_MIN((vec)[3], b); \
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} \
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(void)0
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/** \} */
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/* -------------------------------------------------------------------- */
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/** \name Array Unpacking Macros
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* \{ */
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/* unpack vector for args */
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#define UNPACK2(a) ((a)[0]), ((a)[1])
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#define UNPACK3(a) UNPACK2(a), ((a)[2])
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#define UNPACK4(a) UNPACK3(a), ((a)[3])
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/* pre may be '&', '*' or func, post may be '->member' */
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#define UNPACK2_EX(pre, a, post) (pre((a)[0]) post), (pre((a)[1]) post)
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#define UNPACK3_EX(pre, a, post) UNPACK2_EX(pre, a, post), (pre((a)[2]) post)
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#define UNPACK4_EX(pre, a, post) UNPACK3_EX(pre, a, post), (pre((a)[3]) post)
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/** \} */
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/* -------------------------------------------------------------------- */
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/** \name Array Macros
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* \{ */
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/* array helpers */
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#define ARRAY_LAST_ITEM(arr_start, arr_dtype, arr_len) \
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(arr_dtype *)((char *)(arr_start) + (sizeof(*((arr_dtype *)NULL)) * (size_t)(arr_len - 1)))
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#define ARRAY_HAS_ITEM(arr_item, arr_start, arr_len) \
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(CHECK_TYPE_PAIR_INLINE(arr_start, arr_item), \
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((unsigned int)((arr_item) - (arr_start)) < (unsigned int)(arr_len)))
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/**
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* \note use faster #ARRAY_DELETE_REORDER_LAST when we can re-order.
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*/
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#define ARRAY_DELETE(arr, index, delete_len, arr_len) \
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{ \
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BLI_assert((&arr[index] >= arr) && ((index) + delete_len <= arr_len)); \
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memmove(&(arr)[index], \
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&(arr)[(index) + (delete_len)], \
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(((arr_len) - (index)) - (delete_len)) * sizeof(*(arr))); \
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} \
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((void)0)
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/**
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* Re-ordering array removal.
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*
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* When removing single items this compiles down to:
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* `if (index + 1 != arr_len) { arr[index] = arr[arr_len - 1]; }` (typical reordering removal),
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* with removing multiple items, overlap is detected to avoid memcpy errors.
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*/
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#define ARRAY_DELETE_REORDER_LAST(arr, index, delete_len, arr_len) \
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{ \
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BLI_assert((&arr[index] >= arr) && ((index) + delete_len <= arr_len)); \
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if ((index) + (delete_len) != (arr_len)) { \
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if (((delete_len) == 1) || ((delete_len) <= ((arr_len) - ((index) + (delete_len))))) { \
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memcpy(&(arr)[index], &(arr)[(arr_len) - (delete_len)], (delete_len) * sizeof(*(arr))); \
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} \
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else { \
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memcpy(&(arr)[index], \
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&(arr)[(arr_len) - ((arr_len) - ((index) + (delete_len)))], \
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((arr_len) - ((index) + (delete_len))) * sizeof(*(arr))); \
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} \
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} \
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} \
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((void)0)
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/* assuming a static array */
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#ifndef __cplusplus
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# if defined(__GNUC__) && !defined(__cplusplus) && !defined(__clang__) && \
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!defined(__INTEL_COMPILER)
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# define ARRAY_SIZE(arr) \
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((sizeof(struct { int isnt_array : ((const void *)&(arr) == &(arr)[0]); }) * 0) + \
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(sizeof(arr) / sizeof(*(arr))))
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# else
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# define ARRAY_SIZE(arr) (sizeof(arr) / sizeof(*(arr)))
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# endif
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#endif
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/* ARRAY_SET_ITEMS#(v, ...): set indices of array 'v' */
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/* internal helpers */
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#define _VA_ARRAY_SET_ITEMS2(v, a) ((v)[0] = (a))
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#define _VA_ARRAY_SET_ITEMS3(v, a, b) \
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_VA_ARRAY_SET_ITEMS2(v, a); \
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((v)[1] = (b))
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#define _VA_ARRAY_SET_ITEMS4(v, a, b, c) \
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_VA_ARRAY_SET_ITEMS3(v, a, b); \
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((v)[2] = (c))
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#define _VA_ARRAY_SET_ITEMS5(v, a, b, c, d) \
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_VA_ARRAY_SET_ITEMS4(v, a, b, c); \
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((v)[3] = (d))
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#define _VA_ARRAY_SET_ITEMS6(v, a, b, c, d, e) \
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_VA_ARRAY_SET_ITEMS5(v, a, b, c, d); \
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((v)[4] = (e))
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#define _VA_ARRAY_SET_ITEMS7(v, a, b, c, d, e, f) \
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_VA_ARRAY_SET_ITEMS6(v, a, b, c, d, e); \
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((v)[5] = (f))
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#define _VA_ARRAY_SET_ITEMS8(v, a, b, c, d, e, f, g) \
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_VA_ARRAY_SET_ITEMS7(v, a, b, c, d, e, f); \
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((v)[6] = (g))
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#define _VA_ARRAY_SET_ITEMS9(v, a, b, c, d, e, f, g, h) \
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_VA_ARRAY_SET_ITEMS8(v, a, b, c, d, e, f, g); \
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((v)[7] = (h))
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#define _VA_ARRAY_SET_ITEMS10(v, a, b, c, d, e, f, g, h, i) \
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_VA_ARRAY_SET_ITEMS9(v, a, b, c, d, e, f, g, h); \
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((v)[8] = (i))
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#define _VA_ARRAY_SET_ITEMS11(v, a, b, c, d, e, f, g, h, i, j) \
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_VA_ARRAY_SET_ITEMS10(v, a, b, c, d, e, f, g, h, i); \
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((v)[9] = (j))
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#define _VA_ARRAY_SET_ITEMS12(v, a, b, c, d, e, f, g, h, i, j, k) \
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_VA_ARRAY_SET_ITEMS11(v, a, b, c, d, e, f, g, h, i, j); \
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((v)[10] = (k))
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#define _VA_ARRAY_SET_ITEMS13(v, a, b, c, d, e, f, g, h, i, j, k, l) \
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_VA_ARRAY_SET_ITEMS12(v, a, b, c, d, e, f, g, h, i, j, k); \
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((v)[11] = (l))
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#define _VA_ARRAY_SET_ITEMS14(v, a, b, c, d, e, f, g, h, i, j, k, l, m) \
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_VA_ARRAY_SET_ITEMS13(v, a, b, c, d, e, f, g, h, i, j, k, l); \
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((v)[12] = (m))
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#define _VA_ARRAY_SET_ITEMS15(v, a, b, c, d, e, f, g, h, i, j, k, l, m, n) \
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_VA_ARRAY_SET_ITEMS14(v, a, b, c, d, e, f, g, h, i, j, k, l, m); \
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((v)[13] = (n))
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#define _VA_ARRAY_SET_ITEMS16(v, a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) \
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_VA_ARRAY_SET_ITEMS15(v, a, b, c, d, e, f, g, h, i, j, k, l, m, n); \
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((v)[14] = (o))
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#define _VA_ARRAY_SET_ITEMS17(v, a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p) \
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_VA_ARRAY_SET_ITEMS16(v, a, b, c, d, e, f, g, h, i, j, k, l, m, n, o); \
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((v)[15] = (p))
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/* reusable ARRAY_SET_ITEMS macro */
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#define ARRAY_SET_ITEMS(...) \
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{ \
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VA_NARGS_CALL_OVERLOAD(_VA_ARRAY_SET_ITEMS, __VA_ARGS__); \
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} \
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(void)0
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/** \} */
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/* -------------------------------------------------------------------- */
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/** \name Pointer Macros
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* \{ */
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#if defined(__GNUC__) || defined(__clang__)
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# define POINTER_OFFSET(v, ofs) ((typeof(v))((char *)(v) + (ofs)))
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#else
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# define POINTER_OFFSET(v, ofs) ((void *)((char *)(v) + (ofs)))
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#endif
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/* Warning-free macros for storing ints in pointers. Use these _only_
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* for storing an int in a pointer, not a pointer in an int (64bit)! */
|
|
#define POINTER_FROM_INT(i) ((void *)(intptr_t)(i))
|
|
#define POINTER_AS_INT(i) ((void)0, ((int)(intptr_t)(i)))
|
|
|
|
#define POINTER_FROM_UINT(i) ((void *)(uintptr_t)(i))
|
|
#define POINTER_AS_UINT(i) ((void)0, ((unsigned int)(uintptr_t)(i)))
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name Struct After Macros
|
|
*
|
|
* Typically used to copy/clear polymorphic structs which have a generic
|
|
* member at the start which needs to be left as-is.
|
|
*
|
|
* \{ */
|
|
|
|
/** Performs `offsetof(typeof(data), member) + sizeof((data)->member)` for non-gcc compilers. */
|
|
#define OFFSETOF_STRUCT_AFTER(_struct, _member) \
|
|
((size_t)(((const char *)&((_struct)->_member)) - ((const char *)(_struct))) + \
|
|
sizeof((_struct)->_member))
|
|
|
|
/**
|
|
* memcpy helper, skipping the first part of a struct,
|
|
* ensures 'struct_dst' isn't const and the offset can be computed at compile time.
|
|
* This isn't inclusive, the value of \a member isn't copied.
|
|
*/
|
|
#define MEMCPY_STRUCT_AFTER(struct_dst, struct_src, member) \
|
|
{ \
|
|
CHECK_TYPE_NONCONST(struct_dst); \
|
|
((void)(struct_dst == struct_src), \
|
|
memcpy((char *)(struct_dst) + OFFSETOF_STRUCT_AFTER(struct_dst, member), \
|
|
(const char *)(struct_src) + OFFSETOF_STRUCT_AFTER(struct_dst, member), \
|
|
sizeof(*(struct_dst)) - OFFSETOF_STRUCT_AFTER(struct_dst, member))); \
|
|
} \
|
|
((void)0)
|
|
|
|
#define MEMSET_STRUCT_AFTER(struct_var, value, member) \
|
|
{ \
|
|
CHECK_TYPE_NONCONST(struct_var); \
|
|
memset((char *)(struct_var) + OFFSETOF_STRUCT_AFTER(struct_var, member), \
|
|
value, \
|
|
sizeof(*(struct_var)) - OFFSETOF_STRUCT_AFTER(struct_var, member)); \
|
|
} \
|
|
((void)0)
|
|
|
|
/* defined
|
|
* in memory_utils.c for now. I do not know where we should put it actually... */
|
|
#ifndef __BLI_MEMORY_UTILS_H__
|
|
/**
|
|
* Check if memory is zeroed, as with `memset(arr, 0, arr_size)`.
|
|
*/
|
|
extern bool BLI_memory_is_zero(const void *arr, size_t arr_size);
|
|
#endif
|
|
|
|
#define MEMCMP_STRUCT_AFTER_IS_ZERO(struct_var, member) \
|
|
(BLI_memory_is_zero((const char *)(struct_var) + OFFSETOF_STRUCT_AFTER(struct_var, member), \
|
|
sizeof(*(struct_var)) - OFFSETOF_STRUCT_AFTER(struct_var, member)))
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name String Macros
|
|
* \{ */
|
|
|
|
/* Macro to convert a value to string in the preprocessor:
|
|
* - `STRINGIFY_ARG`: gives the argument as a string
|
|
* - `STRINGIFY_APPEND`: appends any argument 'b' onto the string argument 'a',
|
|
* used by `STRINGIFY` because some preprocessors warn about zero arguments.
|
|
* - `STRINGIFY`: gives the argument's value as a string. */
|
|
|
|
#define STRINGIFY_ARG(x) "" #x
|
|
#define STRINGIFY_APPEND(a, b) "" a #b
|
|
#define STRINGIFY(x) STRINGIFY_APPEND("", x)
|
|
|
|
/* generic strcmp macros */
|
|
#if defined(_MSC_VER)
|
|
# define strcasecmp _stricmp
|
|
# define strncasecmp _strnicmp
|
|
#endif
|
|
|
|
#define STREQ(a, b) (strcmp(a, b) == 0)
|
|
#define STRCASEEQ(a, b) (strcasecmp(a, b) == 0)
|
|
#define STREQLEN(a, b, n) (strncmp(a, b, n) == 0)
|
|
#define STRCASEEQLEN(a, b, n) (strncasecmp(a, b, n) == 0)
|
|
|
|
#define STRPREFIX(a, b) (strncmp((a), (b), strlen(b)) == 0)
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name Unused Function/Argument Macros
|
|
* \{ */
|
|
|
|
#ifndef __cplusplus
|
|
/* UNUSED macro, for function argument */
|
|
# if defined(__GNUC__) || defined(__clang__)
|
|
# define UNUSED(x) UNUSED_##x __attribute__((__unused__))
|
|
# elif defined(_MSC_VER)
|
|
/* NOTE: This suppresses the warning for the line, not the attribute. */
|
|
# define UNUSED(x) UNUSED_##x __pragma(warning(suppress : 4100))
|
|
# else
|
|
# define UNUSED(x) UNUSED_##x
|
|
# endif
|
|
#endif
|
|
|
|
/**
|
|
* WARNING: this doesn't warn when returning pointer types (because of the placement of `*`).
|
|
* Use #UNUSED_FUNCTION_WITH_RETURN_TYPE instead in this case.
|
|
*/
|
|
#if defined(__GNUC__) || defined(__clang__)
|
|
# define UNUSED_FUNCTION(x) __attribute__((__unused__)) UNUSED_##x
|
|
#else
|
|
# define UNUSED_FUNCTION(x) UNUSED_##x
|
|
#endif
|
|
|
|
#if defined(__GNUC__) || defined(__clang__)
|
|
# define UNUSED_FUNCTION_WITH_RETURN_TYPE(rtype, x) __attribute__((__unused__)) rtype UNUSED_##x
|
|
#else
|
|
# define UNUSED_FUNCTION_WITH_RETURN_TYPE(rtype, x) rtype UNUSED_##x
|
|
#endif
|
|
|
|
/**
|
|
* UNUSED_VARS#(a, ...): quiet unused warnings
|
|
*
|
|
* \code{.py}
|
|
* for i in range(16):
|
|
* args = [(chr(ord('a') + (c % 26)) + (chr(ord('0') + (c // 26)))) for c in range(i + 1)]
|
|
* print("#define _VA_UNUSED_VARS_%d(%s) \\" % (i + 1, ", ".join(args)))
|
|
* print("\t((void)(%s)%s)" %
|
|
* (args[0], ((", _VA_UNUSED_VARS_" + str(i) + "(%s)") if i else "%s") %
|
|
* ", ".join((args[1:]))))
|
|
* \endcode
|
|
*/
|
|
|
|
#define _VA_UNUSED_VARS_1(a0) ((void)(a0))
|
|
#define _VA_UNUSED_VARS_2(a0, b0) ((void)(a0), _VA_UNUSED_VARS_1(b0))
|
|
#define _VA_UNUSED_VARS_3(a0, b0, c0) ((void)(a0), _VA_UNUSED_VARS_2(b0, c0))
|
|
#define _VA_UNUSED_VARS_4(a0, b0, c0, d0) ((void)(a0), _VA_UNUSED_VARS_3(b0, c0, d0))
|
|
#define _VA_UNUSED_VARS_5(a0, b0, c0, d0, e0) ((void)(a0), _VA_UNUSED_VARS_4(b0, c0, d0, e0))
|
|
#define _VA_UNUSED_VARS_6(a0, b0, c0, d0, e0, f0) \
|
|
((void)(a0), _VA_UNUSED_VARS_5(b0, c0, d0, e0, f0))
|
|
#define _VA_UNUSED_VARS_7(a0, b0, c0, d0, e0, f0, g0) \
|
|
((void)(a0), _VA_UNUSED_VARS_6(b0, c0, d0, e0, f0, g0))
|
|
#define _VA_UNUSED_VARS_8(a0, b0, c0, d0, e0, f0, g0, h0) \
|
|
((void)(a0), _VA_UNUSED_VARS_7(b0, c0, d0, e0, f0, g0, h0))
|
|
#define _VA_UNUSED_VARS_9(a0, b0, c0, d0, e0, f0, g0, h0, i0) \
|
|
((void)(a0), _VA_UNUSED_VARS_8(b0, c0, d0, e0, f0, g0, h0, i0))
|
|
#define _VA_UNUSED_VARS_10(a0, b0, c0, d0, e0, f0, g0, h0, i0, j0) \
|
|
((void)(a0), _VA_UNUSED_VARS_9(b0, c0, d0, e0, f0, g0, h0, i0, j0))
|
|
#define _VA_UNUSED_VARS_11(a0, b0, c0, d0, e0, f0, g0, h0, i0, j0, k0) \
|
|
((void)(a0), _VA_UNUSED_VARS_10(b0, c0, d0, e0, f0, g0, h0, i0, j0, k0))
|
|
#define _VA_UNUSED_VARS_12(a0, b0, c0, d0, e0, f0, g0, h0, i0, j0, k0, l0) \
|
|
((void)(a0), _VA_UNUSED_VARS_11(b0, c0, d0, e0, f0, g0, h0, i0, j0, k0, l0))
|
|
#define _VA_UNUSED_VARS_13(a0, b0, c0, d0, e0, f0, g0, h0, i0, j0, k0, l0, m0) \
|
|
((void)(a0), _VA_UNUSED_VARS_12(b0, c0, d0, e0, f0, g0, h0, i0, j0, k0, l0, m0))
|
|
#define _VA_UNUSED_VARS_14(a0, b0, c0, d0, e0, f0, g0, h0, i0, j0, k0, l0, m0, n0) \
|
|
((void)(a0), _VA_UNUSED_VARS_13(b0, c0, d0, e0, f0, g0, h0, i0, j0, k0, l0, m0, n0))
|
|
#define _VA_UNUSED_VARS_15(a0, b0, c0, d0, e0, f0, g0, h0, i0, j0, k0, l0, m0, n0, o0) \
|
|
((void)(a0), _VA_UNUSED_VARS_14(b0, c0, d0, e0, f0, g0, h0, i0, j0, k0, l0, m0, n0, o0))
|
|
#define _VA_UNUSED_VARS_16(a0, b0, c0, d0, e0, f0, g0, h0, i0, j0, k0, l0, m0, n0, o0, p0) \
|
|
((void)(a0), _VA_UNUSED_VARS_15(b0, c0, d0, e0, f0, g0, h0, i0, j0, k0, l0, m0, n0, o0, p0))
|
|
|
|
/* reusable ELEM macro */
|
|
#define UNUSED_VARS(...) VA_NARGS_CALL_OVERLOAD(_VA_UNUSED_VARS_, __VA_ARGS__)
|
|
|
|
/* for debug-only variables */
|
|
#ifndef NDEBUG
|
|
# define UNUSED_VARS_NDEBUG(...)
|
|
#else
|
|
# define UNUSED_VARS_NDEBUG UNUSED_VARS
|
|
#endif
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name Branch Prediction Macros
|
|
* \{ */
|
|
|
|
/* hints for branch prediction, only use in code that runs a _lot_ where */
|
|
#ifdef __GNUC__
|
|
# define LIKELY(x) __builtin_expect(!!(x), 1)
|
|
# define UNLIKELY(x) __builtin_expect(!!(x), 0)
|
|
#else
|
|
# define LIKELY(x) (x)
|
|
# define UNLIKELY(x) (x)
|
|
#endif
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name Flag Macros
|
|
* \{ */
|
|
|
|
/* Set flag from a single test */
|
|
#define SET_FLAG_FROM_TEST(value, test, flag) \
|
|
{ \
|
|
if (test) { \
|
|
(value) |= (flag); \
|
|
} \
|
|
else { \
|
|
(value) &= ~(flag); \
|
|
} \
|
|
} \
|
|
((void)0)
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name C++ Macros
|
|
* \{ */
|
|
|
|
#ifdef __cplusplus
|
|
|
|
/* Useful to port C code using enums to C++ where enums are strongly typed.
|
|
* To use after the enum declaration. */
|
|
/* If any enumerator `C` is set to say `A|B`, then `C` would be the max enum value. */
|
|
# define ENUM_OPERATORS(_enum_type, _max_enum_value) \
|
|
extern "C++" { \
|
|
inline constexpr _enum_type operator|(_enum_type a, _enum_type b) \
|
|
{ \
|
|
return (_enum_type)(uint64_t(a) | uint64_t(b)); \
|
|
} \
|
|
inline constexpr _enum_type operator&(_enum_type a, _enum_type b) \
|
|
{ \
|
|
return (_enum_type)(uint64_t(a) & uint64_t(b)); \
|
|
} \
|
|
inline constexpr _enum_type operator~(_enum_type a) \
|
|
{ \
|
|
return (_enum_type)(~uint64_t(a) & (2 * uint64_t(_max_enum_value) - 1)); \
|
|
} \
|
|
inline _enum_type &operator|=(_enum_type &a, _enum_type b) \
|
|
{ \
|
|
return a = (_enum_type)(uint64_t(a) | uint64_t(b)); \
|
|
} \
|
|
inline _enum_type &operator&=(_enum_type &a, _enum_type b) \
|
|
{ \
|
|
return a = (_enum_type)(uint64_t(a) & uint64_t(b)); \
|
|
} \
|
|
inline _enum_type &operator^=(_enum_type &a, _enum_type b) \
|
|
{ \
|
|
return a = (_enum_type)(uint64_t(a) ^ uint64_t(b)); \
|
|
} \
|
|
} /* extern "C++" */
|
|
|
|
#else
|
|
/* Output nothing. */
|
|
# define ENUM_OPERATORS(_type, _max)
|
|
#endif
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name Misc Macros
|
|
* \{ */
|
|
|
|
/** Useful for debugging. */
|
|
#define AT __FILE__ ":" STRINGIFY(__LINE__)
|
|
|
|
/** No-op for expressions we don't want to instantiate, but must remain valid. */
|
|
#define EXPR_NOP(expr) (void)(0 ? ((void)(expr), 1) : 0)
|
|
|
|
/**
|
|
* Utility macro that wraps `std::enable_if` to make it a bit easier to use and less verbose for
|
|
* SFINAE in common cases.
|
|
*
|
|
* \note Often one has to invoke this macro with double parenthesis. That's because the condition
|
|
* often contains a comma and angle brackets are not recognized as parenthesis by the preprocessor.
|
|
*/
|
|
#define BLI_ENABLE_IF(condition) typename std::enable_if_t<(condition)> * = nullptr
|
|
|
|
#if defined(_MSC_VER)
|
|
# define BLI_NO_UNIQUE_ADDRESS [[msvc::no_unique_address]]
|
|
#elif defined(__has_cpp_attribute)
|
|
# if __has_cpp_attribute(no_unique_address)
|
|
# define BLI_NO_UNIQUE_ADDRESS [[no_unique_address]]
|
|
# else
|
|
# define BLI_NO_UNIQUE_ADDRESS
|
|
# endif
|
|
#else
|
|
# define BLI_NO_UNIQUE_ADDRESS [[no_unique_address]]
|
|
#endif
|
|
|
|
/** \} */
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
|
|
namespace blender::blenlib_internal {
|
|
|
|
/* A replacement for std::is_bounded_array_v until we go C++20. */
|
|
template<class T> struct IsBoundedArray : std::false_type {};
|
|
template<class T, std::size_t N> struct IsBoundedArray<T[N]> : std::true_type {};
|
|
|
|
} // namespace blender::blenlib_internal
|
|
|
|
/**
|
|
* Size of a bounded array provided as an arg.
|
|
*
|
|
* The arg must be a bounded array, such as int[7] or MyType[11].
|
|
* Returns the number of elements in the array, known at the compile time.
|
|
*/
|
|
template<class T, size_t N> constexpr size_t ARRAY_SIZE(const T (&arg)[N]) noexcept
|
|
{
|
|
(void)arg;
|
|
return N;
|
|
}
|
|
|
|
/**
|
|
* Number of elements in a type which defines a bounded array.
|
|
*
|
|
* For example,
|
|
* struct MyType {
|
|
* int array[12];
|
|
* };
|
|
*
|
|
* `BOUNDED_ARRAY_TYPE_SIZE<decltype(MyType::array)>` returns 12.
|
|
*/
|
|
template<class T>
|
|
constexpr std::enable_if_t<blender::blenlib_internal::IsBoundedArray<T>::value, size_t>
|
|
BOUNDED_ARRAY_TYPE_SIZE() noexcept
|
|
{
|
|
return sizeof(std::declval<T>()) / sizeof(std::declval<T>()[0]);
|
|
}
|
|
|
|
#endif
|
|
|
|
#endif /* __BLI_UTILDEFINES_H__ */
|