ref: ee12b1df3a694db7d710eb290bc179e52c98a594
dir: /base.h/
#pragma once
#include <assert.h>
#include <limits.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
// clang or gcc or msvc or other
#if defined(__clang__)
#define ORCA_OPT_MINSIZE __attribute__((minsize))
#elif defined(__GNUC__)
#define ORCA_OPT_MINSIZE __attribute__(("Os"))
#elif defined(_MSC_VER)
#define ORCA_OPT_MINSIZE
#else
#define ORCA_OPT_MINSIZE
#endif
// (gcc / clang) or msvc or other
#if defined(__GNUC__) || defined(__clang__)
#define ORCA_FORCE_INLINE __attribute__((always_inline)) inline
#define ORCA_FORCE_STATIC_INLINE __attribute__((always_inline)) static inline
#define ORCA_FORCE_NO_INLINE __attribute__((noinline))
#elif defined(_MSC_VER)
#define ORCA_FORCE_INLINE __forceinline
#define ORCA_FORCE_STATIC_INLINE __forceinline static
#define ORCA_FORCE_NO_INLINE __declspec(noinline)
#else
#define ORCA_FORCE_INLINE inline
#define ORCA_FORCE_STATIC_INLINE inline static
#define ORCA_FORCE_NO_INLINE
#endif
// (gcc / clang) or other
#if defined(__GNUC__) || defined(__clang__)
#define ORCA_ASSUME_ALIGNED(_ptr, _alignment) \
__builtin_assume_aligned(_ptr, _alignment)
#define ORCA_PURE __attribute__((pure))
#define ORCA_LIKELY(_x) __builtin_expect(_x, 1)
#define ORCA_UNLIKELY(_x) __builtin_expect(_x, 0)
#define ORCA_OK_IF_UNUSED __attribute__((unused))
#define ORCA_UNREACHABLE __builtin_unreachable()
#else
#define ORCA_ASSUME_ALIGNED(_ptr, _alignment) (_ptr)
#define ORCA_PURE
#define ORCA_LIKELY(_x) (_x)
#define ORCA_UNLIKELY(_x) (_x)
#define ORCA_OK_IF_UNUSED
#define ORCA_UNREACHABLE assert(false)
#endif
// array count, safer on gcc/clang
#if defined(__GNUC__) || defined(__clang__)
#define ORCA_ASSERT_IS_ARRAY(_array) \
(sizeof(char[1 - 2 * __builtin_types_compatible_p( \
__typeof(_array), __typeof(&(_array)[0]))]) - \
1)
#define ORCA_ARRAY_COUNTOF(_array) \
(sizeof(_array) / sizeof((_array)[0]) + ORCA_ASSERT_IS_ARRAY(_array))
#else
// pray
#define ORCA_ARRAY_COUNTOF(_array) (sizeof(_array) / sizeof(_array[0]))
#endif
#define ORCA_Y_MAX UINT16_MAX
#define ORCA_X_MAX UINT16_MAX
typedef uint8_t U8;
typedef int8_t I8;
typedef uint16_t U16;
typedef int16_t I16;
typedef uint32_t U32;
typedef int32_t I32;
typedef uint64_t U64;
typedef int64_t I64;
typedef size_t Usz;
typedef ssize_t Isz;
typedef char Glyph;
typedef U8 Mark;
typedef Glyph* Gbuffer;
typedef struct Field Field;
ORCA_FORCE_STATIC_INLINE Usz orca_round_up_power2(Usz x) {
assert(x <= SIZE_MAX / 2 + 1);
x -= 1;
x |= (x >> 1);
x |= (x >> 2);
x |= (x >> 4);
x |= (x >> 8);
x |= (x >> 16);
#if SIZE_MAX > UINT32_MAX
x |= (x >> 32);
#endif
return x + 1;
}