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iris
2026-05-18 23:13:35 +02:00
parent c2e22fb742
commit 2230d4c662
6 changed files with 0 additions and 368 deletions
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external/ircolib/README.md
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# ircolib
Collections of useful functions I started copy-pasting in various projects and thus decided to gather all in one place.
## Flags
To enable SIMD for `floats.hpp`, add a `#define SIMD_SUPPORT` before `#include "floats.hpp"`.
external/ircolib/file.hpp
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#pragma once
#include <ircolib/types.hpp>
#include <fstream>
#include <vector>
#include <filesystem>
namespace fs = std::filesystem;
namespace ircolib {
static inline std::vector<u8> read_file_binary(const std::string &path) {
std::ifstream file(path, std::ios::binary);
return {std::istreambuf_iterator{file}, {}};
}
static inline void write_file_binary(const std::vector<u8> &data, const std::string &path) {
std::ofstream file(path, std::ios::binary);
std::copy(data.begin(), data.end(), std::ostreambuf_iterator{file});
}
static inline void write_file_binary(const u8 *data, const size_t size, const std::string &path) {
FILE *out = fopen(path.c_str(), "wb");
fwrite(data, size, 1, out);
fclose(out);
}
template <size_t Size>
static inline void write_file_binary(const std::array<u8, Size> &data, const std::string &path) {
std::ofstream file(path, std::ios::binary);
std::copy(data.begin(), data.end(), std::ostreambuf_iterator{file});
}
static inline size_t next_pow2(size_t num) {
// Taken from "Bit Twiddling Hacks" by Sean Anderson:
// https://graphics.stanford.edu/~seander/bithacks.html#RoundUpPowerOf2
--num;
num |= num >> 1;
num |= num >> 2;
num |= num >> 4;
num |= num >> 8;
num |= num >> 16;
return num + 1;
}
} // namespace ircolib
external/ircolib/floats.hpp
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#pragma once
#include <cmath>
#include <ircolib/types.hpp>
namespace ircolib {
static inline auto round_ceil(float f) {
#ifdef SIMD_SUPPORT
__m128 t = _mm_set_ss(f);
t = _mm_round_ss(t, t, _MM_FROUND_TO_POS_INF);
return _mm_cvtss_f32(t);
#else
return ceilf(f);
#endif
}
static inline auto round_ceil(double f) {
#ifdef SIMD_SUPPORT
__m128d t = _mm_set_sd(f);
t = _mm_round_sd(t, t, _MM_FROUND_TO_POS_INF);
return _mm_cvtsd_f64(t);
#else
return ceil(f);
#endif
}
static inline auto round_nearest(float f) {
#ifdef SIMD_SUPPORT
__m128 t = _mm_set_ss(f);
t = _mm_round_ss(t, t, _MM_FROUND_TO_NEAREST_INT);
return _mm_cvtss_f32(t);
#else
return roundf(f);
#endif
}
static inline auto round_nearest(double f) {
#ifdef SIMD_SUPPORT
__m128d t = _mm_set_sd(f);
t = _mm_round_sd(t, t, _MM_FROUND_TO_NEAREST_INT);
return _mm_cvtsd_f64(t);
#else
return round(f);
#endif
}
static inline auto round_current(float f) {
#ifdef SIMD_SUPPORT
auto t = _mm_set_ss(f);
t = _mm_round_ss(t, t, _MM_FROUND_CUR_DIRECTION);
return _mm_cvtss_f32(t);
#else
return rint(f);
#endif
}
static inline auto round_current(double f) {
#ifdef SIMD_SUPPORT
auto t = _mm_set_sd(f);
t = _mm_round_sd(t, t, _MM_FROUND_CUR_DIRECTION);
return _mm_cvtsd_f64(t);
#else
return rint(f);
#endif
}
static inline auto round_floor(float f) {
#ifdef SIMD_SUPPORT
__m128 t = _mm_set_ss(f);
t = _mm_round_ss(t, t, _MM_FROUND_TO_NEG_INF);
return _mm_cvtss_f32(t);
#else
return floor(f);
#endif
}
static inline auto round_floor(double f) {
#ifdef SIMD_SUPPORT
__m128d t = _mm_set_sd(f);
t = _mm_round_sd(t, t, _MM_FROUND_TO_NEG_INF);
return _mm_cvtsd_f64(t);
#else
return floor(f);
#endif
}
static inline auto round_trunc(float f) {
#ifdef SIMD_SUPPORT
__m128 t = _mm_set_ss(f);
t = _mm_round_ss(t, t, _MM_FROUND_TO_ZERO);
return _mm_cvtss_f32(t);
#else
return trunc(f);
#endif
}
static inline auto round_trunc(double f) {
#ifdef SIMD_SUPPORT
__m128d t = _mm_set_sd(f);
t = _mm_round_sd(t, t, _MM_FROUND_TO_ZERO);
return _mm_cvtsd_f64(t);
#else
return trunc(f);
#endif
}
} // namespace ircolib
external/ircolib/log.hpp
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#pragma once
#include <print>
namespace ircolib {
template <typename... Args>
void panic(std::format_string<Args...> fmt, Args &&...args) {
std::print("[FATAL] ");
std::println(fmt, std::forward<Args>(args)...);
exit(1);
}
template <typename... Args>
void warn(std::format_string<Args...> fmt, Args &&...args) {
std::print("[WARN] ");
std::println(fmt, std::forward<Args>(args)...);
}
} // namespace ircolib
external/ircolib/mem_access.hpp
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#pragma once
#include <ircolib/types.hpp>
#include <cstring>
#include <functional>
#include <bit>
#include <algorithm>
#include <vector>
#include <concepts>
namespace ircolib {
static inline std::vector<u8> integral_to_buffer(const std::integral auto &val) {
std::vector<u8> ret{};
ret.resize(sizeof(val));
memcpy(ret.data(), &val, sizeof(val));
return ret;
}
static inline auto integral_to_slice(const std::integral auto &val) -> std::array<u8, sizeof(val)> {
std::array<u8, sizeof(val)> ret{};
memcpy(ret.data(), &val, sizeof(val));
return ret;
}
static inline constexpr bool is_inside_range(const std::integral auto &addr, const std::integral auto &start,
const std::integral auto &end) {
return addr >= start && addr <= end;
}
template <typename T>
static constexpr inline T read_access(const u8 *data, const u32 index);
template <typename T>
static constexpr inline T read_access(const std::vector<u8> &data, const u32 index);
template <typename T, size_t Size>
static constexpr inline T read_access(const std::array<u8, Size> &data, const u32 index);
template <typename T>
static constexpr inline void write_access(u8 *data, const u32 index, const T val);
template <typename T>
static constexpr inline void write_access(std::vector<u8> &data, const u32 index, const T val);
template <typename T, size_t Size>
static constexpr inline void write_access(std::array<u8, Size> &data, const u32 index, const T val);
template <>
constexpr inline u64 read_access(const u8 *data, const u32 index) {
u32 hi = *reinterpret_cast<const u32 *>(&data[index + 0]);
u32 lo = *reinterpret_cast<const u32 *>(&data[index + 4]);
const auto &result = static_cast<u64>(hi) << 32 | static_cast<u64>(lo);
return result;
}
template <typename T>
static constexpr inline T read_access(const u8 *data, const u32 index) {
return *reinterpret_cast<const T *>(&data[index]);
}
template <>
constexpr inline u64 read_access(const std::vector<u8> &data, const u32 index) {
u32 hi = *reinterpret_cast<const u32 *>(&data[index + 0]);
u32 lo = *reinterpret_cast<const u32 *>(&data[index + 4]);
return (static_cast<u64>(hi) << 32) | static_cast<u64>(lo);
}
template <typename T>
static constexpr inline T read_access(const std::vector<u8> &data, const u32 index) {
return *reinterpret_cast<const T *>(&data[index]);
}
template <size_t Size>
constexpr inline u64 read_access(const std::array<u8, Size> &data, const u32 index) {
u32 hi = *reinterpret_cast<const u32 *>(&data[index + 0]);
u32 lo = *reinterpret_cast<const u32 *>(&data[index + 4]);
return static_cast<u64>(hi) << 32 | static_cast<u64>(lo);
}
template <typename T, size_t Size>
static constexpr inline T read_access(const std::array<u8, Size> &data, const u32 index) {
return *reinterpret_cast<const T *>(&data[index]);
}
template <size_t Size>
constexpr inline void write_access(std::array<u8, Size> &data, const u32 index, const u64 val) {
const u32 hi = val >> 32;
const u32 lo = val;
*reinterpret_cast<u32 *>(&data[index + 0]) = hi;
*reinterpret_cast<u32 *>(&data[index + 4]) = lo;
}
template <typename T, size_t Size>
static constexpr inline void write_access(std::array<u8, Size> &data, const u32 index, const T val) {
*reinterpret_cast<T *>(&data[index]) = val;
}
template <>
constexpr inline void write_access(std::vector<u8> &data, const u32 index, const u64 val) {
const u32 hi = val >> 32;
const u32 lo = val;
*reinterpret_cast<u32 *>(&data[index + 0]) = hi;
*reinterpret_cast<u32 *>(&data[index + 4]) = lo;
}
template <typename T>
static constexpr inline void write_access(std::vector<u8> &data, const u32 index, const T val) {
*reinterpret_cast<T *>(&data[index]) = val;
}
template <>
constexpr inline void write_access(u8 *data, const u32 index, const u64 val) {
const u32 hi = val >> 32;
const u32 lo = val;
*reinterpret_cast<u32 *>(&data[index + 0]) = hi;
*reinterpret_cast<u32 *>(&data[index + 4]) = lo;
}
template <typename T>
static constexpr inline void write_access(u8 *data, const u32 index, const T val) {
*reinterpret_cast<T *>(&data[index]) = val;
}
template <typename T>
static constexpr inline void swap_buffer(std::vector<u8> &data) {
for (size_t i = 0; i < data.size(); i += sizeof(T)) {
const T original = *reinterpret_cast<T *>(&data[i]);
*reinterpret_cast<T *>(&data[i]) = std::byteswap(original);
}
}
template <typename T, size_t Size>
static constexpr inline void swap_buffer(std::array<u8, Size> &data) {
for (size_t i = 0; i < data.size(); i += sizeof(T)) {
const T original = *reinterpret_cast<T *>(&data[i]);
*reinterpret_cast<T *>(&data[i]) = std::byteswap(original);
}
}
template <typename T>
static constexpr inline void swap_buffer(u8 *data, size_t size) {
for (size_t i = 0; i < size; i += sizeof(T)) {
const T original = *reinterpret_cast<T *>(&data[i]);
*reinterpret_cast<T *>(&data[i]) = std::byteswap(original);
}
}
#ifdef _WIN32
inline void *aligned_alloc(const size_t alignment, const size_t size) { return _aligned_malloc(size, alignment); }
inline void aligned_free(void *ptr) { _aligned_free(ptr); }
#else
inline void *aligned_alloc(const size_t alignment, const size_t size) { return std::aligned_alloc(alignment, size); }
inline void aligned_free(void *ptr) { std::free(ptr); }
#endif
} // namespace ircolib
external/ircolib/types.hpp
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#pragma once
#include <cstdint>
namespace ircolib {
using u8 = uint8_t;
using u16 = uint16_t;
using u32 = uint32_t;
using u64 = uint64_t;
using s8 = int8_t;
using s16 = int16_t;
using s32 = int32_t;
using s64 = int64_t;
template <typename T, std::size_t bit>
static constexpr bool is_bit_set(const T &val) {
return val & (1 << bit);
}
template <typename T, std::size_t bit>
static constexpr void set_bit(T &val) {
val |= 1 << bit;
}
template <typename T>
inline bool is_bit_set(const T &val, const std::size_t &bit) {
return val & (1 << bit);
}
template <typename T>
inline void set_bit(T &val, const std::size_t &bit) {
val |= 1 << bit;
}
} // namespace ircolib
constexpr ircolib::u32 operator""_kib(const unsigned long long v) { return v * 1024; }
constexpr ircolib::u32 operator""_mib(const unsigned long long v) { return v * 1024 * 1024; }
constexpr ircolib::u32 operator""_gib(const unsigned long long v) { return v * 1024 * 1024 * 1024; }