mirror of
https://github.com/InoriRus/Kyty.git
synced 2026-08-28 05:06:40 +00:00
Initial commit
This commit is contained in:
InoriRus
@@ -0,0 +1,23 @@
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file(GLOB math_src
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"src/*.cpp"
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)
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add_library(math_obj OBJECT ${math_src})
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add_library(math STATIC $<TARGET_OBJECTS:math_obj>)
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target_link_libraries(math core)
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target_link_libraries(math rijndael)
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get_property(inc_headers TARGET math PROPERTY INCLUDE_DIRECTORIES)
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target_include_directories(math_obj PRIVATE ${inc_headers})
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list(APPEND check_headers
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${CMAKE_SOURCE_DIR}/include
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)
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clang_tidy_check(math_obj "" "${check_headers}" "${inc_headers}")
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include_what_you_use(math_obj "${inc_headers}")
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@@ -0,0 +1,185 @@
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#include "Kyty/Core/DbgAssert.h"
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#include "Kyty/Math/Crypto.h" // IWYU pragma: associated
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extern "C" {
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#include "rijndael-alg-fst.h"
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}
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namespace Kyty::Math {
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Core::ByteBuffer AES::Encrypt(const uint8_t* buf, uint32_t length, const uint8_t* key, const uint8_t* iv, Mode mode)
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{
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Core::ByteBuffer out;
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EXIT_IF(!buf || !key);
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EXIT_IF(length == 0);
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EXIT_IF(mode != Mode::Cbc256Pkcs7Padding && mode != Mode::Cbc256ZeroPadding);
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uint32_t rk[4 * (MAXNR + 1)];
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uint8_t tmp_buf[16];
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uint8_t tmp_iv[16];
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if (iv != nullptr)
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{
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std::memcpy(tmp_iv, iv, 16);
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} else
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{
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std::memset(tmp_iv, 0, 16);
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}
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if (mode == Mode::Cbc256Pkcs7Padding || mode == Mode::Cbc256ZeroPadding)
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{
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int nr = rijndaelKeySetupEnc(rk, key, 256);
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EXIT_IF(nr != 14);
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uint32_t padding = 16 - (length % 16);
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if (mode == Mode::Cbc256ZeroPadding && padding == 16)
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{
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padding = 0;
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}
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Core::ByteBuffer o(length + padding);
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auto* out_ptr = reinterpret_cast<uint8_t*>(o.GetData());
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while (length >= 16)
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{
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for (int n = 0; n < 16; n++)
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{
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tmp_buf[n] = buf[n] ^ tmp_iv[n];
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}
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rijndaelEncrypt(rk, nr, tmp_buf, out_ptr);
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std::memcpy(tmp_iv, out_ptr, 16);
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length -= 16;
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buf += 16;
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out_ptr += 16;
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}
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if ((length + padding) != 0u)
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{
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EXIT_IF(length + padding != 16);
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for (uint32_t n = 0; n < length; n++)
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{
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tmp_buf[n] = buf[n] ^ tmp_iv[n];
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}
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if (mode == Mode::Cbc256ZeroPadding)
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{
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for (uint32_t n = length; n < 16; n++)
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{
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tmp_buf[n] = 0u ^ tmp_iv[n];
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}
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} else
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{
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for (uint32_t n = length; n < 16; n++)
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{
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tmp_buf[n] = padding ^ tmp_iv[n];
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}
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}
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rijndaelEncrypt(rk, nr, tmp_buf, out_ptr);
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}
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out = o;
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}
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return out;
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}
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Core::ByteBuffer AES::Encrypt(const Core::ByteBuffer& buf, const uint8_t* key, const uint8_t* iv, Mode mode)
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{
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return AES::Encrypt(reinterpret_cast<const uint8_t*>(buf.GetDataConst()), buf.Size(), key, iv, mode);
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}
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Core::ByteBuffer AES::Decrypt(const uint8_t* buf, uint32_t length, const uint8_t* key, const uint8_t* iv, Mode mode)
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{
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Core::ByteBuffer out;
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EXIT_IF(!buf || !key);
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EXIT_IF(length == 0);
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EXIT_IF(mode != Mode::Cbc256Pkcs7Padding && mode != Mode::Cbc256ZeroPadding);
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EXIT_IF((length % 16) != 0);
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uint32_t rk[4 * (MAXNR + 1)];
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uint8_t tmp_buf[16];
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uint8_t tmp_iv[16];
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if (iv != nullptr)
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{
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std::memcpy(tmp_iv, iv, 16);
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} else
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{
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std::memset(tmp_iv, 0, 16);
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}
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if (mode == Mode::Cbc256Pkcs7Padding || mode == Mode::Cbc256ZeroPadding)
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{
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int nr = rijndaelKeySetupDec(rk, key, 256);
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EXIT_IF(nr != 14);
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Core::ByteBuffer o(length);
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auto* out_ptr = reinterpret_cast<uint8_t*>(o.GetData());
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while (length >= 16)
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{
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rijndaelDecrypt(rk, nr, buf, tmp_buf);
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for (int n = 0; n < 16; n++)
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{
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out_ptr[n] = tmp_buf[n] ^ tmp_iv[n];
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}
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std::memcpy(tmp_iv, buf, 16);
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length -= 16;
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buf += 16;
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out_ptr += 16;
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}
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EXIT_IF(length > 0);
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if (mode == Mode::Cbc256Pkcs7Padding)
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{
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auto padding = std::to_integer<uint32_t>(o.At(o.Size() - 1));
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o.RemoveAt(o.Size() - padding, padding);
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}
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out = o;
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}
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return out;
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}
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Core::ByteBuffer AES::EncryptStr(const String& str, const uint8_t* key, const uint8_t* iv, Mode mode)
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{
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String::Utf8 utf8 = str.utf8_str();
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return Encrypt(reinterpret_cast<const uint8_t*>(utf8.GetDataConst()), utf8.Size(), key, iv, mode);
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}
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Core::ByteBuffer AES::Decrypt(const Core::ByteBuffer& buf, const uint8_t* key, const uint8_t* iv, Mode mode)
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{
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return AES::Decrypt(reinterpret_cast<const uint8_t*>(buf.GetDataConst()), buf.Size(), key, iv, mode);
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}
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String AES::DecryptStr(const uint8_t* buf, uint32_t length, const uint8_t* key, const uint8_t* iv, Mode mode)
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{
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Core::ByteBuffer bin = AES::Decrypt(buf, length, key, iv, mode);
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EXIT_IF(bin.At(bin.Size() - 1) != (Core::Byte)0);
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return String::FromUtf8(reinterpret_cast<const char*>(bin.GetDataConst()));
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}
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String AES::DecryptStr(const Core::ByteBuffer& buf, const uint8_t* key, const uint8_t* iv, Mode mode)
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{
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return AES::DecryptStr(reinterpret_cast<const uint8_t*>(buf.GetDataConst()), buf.Size(), key, iv, mode);
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}
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} // namespace Kyty::Math
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@@ -0,0 +1,387 @@
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#include "Kyty/Math/Crypto.h" // IWYU pragma: associated
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namespace Kyty::Math {
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namespace MD5 {
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constexpr uint32_t S11 = 7;
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constexpr uint32_t S12 = 12;
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constexpr uint32_t S13 = 17;
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constexpr uint32_t S14 = 22;
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constexpr uint32_t S21 = 5;
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constexpr uint32_t S22 = 9;
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constexpr uint32_t S23 = 14;
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constexpr uint32_t S24 = 20;
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constexpr uint32_t S31 = 4;
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constexpr uint32_t S32 = 11;
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constexpr uint32_t S33 = 16;
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constexpr uint32_t S34 = 23;
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constexpr uint32_t S41 = 6;
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constexpr uint32_t S42 = 10;
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constexpr uint32_t S43 = 15;
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constexpr uint32_t S44 = 21;
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/* F, G, H and I are basic MD5 functions.
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*/
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//#define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
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//#define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
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//#define H(x, y, z) ((x) ^ (y) ^ (z))
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//#define I(x, y, z) ((y) ^ ((x) | (~z)))
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static uint32_t F(uint32_t x, uint32_t y, uint32_t z)
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{
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return (((x) & (y)) | ((~x) & (z)));
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}
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static uint32_t G(uint32_t x, uint32_t y, uint32_t z)
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{
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return (((x) & (z)) | ((y) & (~z)));
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}
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static uint32_t H(uint32_t x, uint32_t y, uint32_t z)
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{
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return ((x) ^ (y) ^ (z));
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}
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static uint32_t I(uint32_t x, uint32_t y, uint32_t z)
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{
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return ((y) ^ ((x) | (~z)));
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}
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/* ROTATE_LEFT rotates x left n bits.
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*/
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//#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
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static uint32_t ROTATE_LEFT(uint32_t x, uint32_t n)
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{
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return (((x) << (n)) | ((x) >> (32u - (n))));
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}
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/* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
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Rotation is separate from addition to prevent recomputation.
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*/
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//#define FF(a, b, c, d, x, s, ac) {
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// (a) += F ((b), (c), (d)) + (x) + (uint32_t)(ac);
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// (a) = ROTATE_LEFT ((a), (s));
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// (a) += (b);
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// }
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//#define GG(a, b, c, d, x, s, ac) {
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// (a) += G ((b), (c), (d)) + (x) + (uint32_t)(ac);
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// (a) = ROTATE_LEFT ((a), (s));
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// (a) += (b);
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// }
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//#define HH(a, b, c, d, x, s, ac) {
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// (a) += H ((b), (c), (d)) + (x) + (uint32_t)(ac);
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// (a) = ROTATE_LEFT ((a), (s));
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// (a) += (b);
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// }
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//#define II(a, b, c, d, x, s, ac) {
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// (a) += I ((b), (c), (d)) + (x) + (uint32_t)(ac);
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// (a) = ROTATE_LEFT ((a), (s));
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// (a) += (b);
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// }
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static void FF(uint32_t* a, uint32_t b, uint32_t c, uint32_t d, uint32_t x, uint32_t s, uint32_t ac)
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{
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(*a) += F((b), (c), (d)) + (x) + (ac);
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(*a) = ROTATE_LEFT((*a), (s));
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(*a) += (b);
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}
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static void GG(uint32_t* a, uint32_t b, uint32_t c, uint32_t d, uint32_t x, uint32_t s, uint32_t ac)
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{
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(*a) += G((b), (c), (d)) + (x) + (ac);
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(*a) = ROTATE_LEFT((*a), (s));
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(*a) += (b);
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}
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static void HH(uint32_t* a, uint32_t b, uint32_t c, uint32_t d, uint32_t x, uint32_t s, uint32_t ac)
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{
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(*a) += H((b), (c), (d)) + (x) + (ac);
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(*a) = ROTATE_LEFT((*a), (s));
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(*a) += (b);
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}
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static void II(uint32_t* a, uint32_t b, uint32_t c, uint32_t d, uint32_t x, uint32_t s, uint32_t ac)
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{
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(*a) += I((b), (c), (d)) + (x) + (ac);
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(*a) = ROTATE_LEFT((*a), (s));
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(*a) += (b);
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}
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static void Transform(uint32_t state[4], const uint8_t block[64]);
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static void Encode(uint8_t* output, const uint32_t* input, uint32_t len);
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static void Decode(uint32_t* output, const uint8_t* input, uint32_t len);
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static uint8_t g_padding[64] = {0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
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void Init(CTX* context)
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{
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context->count[0] = context->count[1] = 0;
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/* Load magic initialization constants.*/
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context->state[0] = 0x67452301;
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context->state[1] = 0xefcdab89;
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context->state[2] = 0x98badcfe;
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context->state[3] = 0x10325476;
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}
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void Update(CTX* context, const uint8_t* input, uint32_t input_len)
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{
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unsigned int i = 0;
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unsigned int index = 0;
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unsigned int part_len = 0;
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/* Compute number of bytes mod 64 */
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index = ((context->count[0] >> 3u) & 0x3Fu);
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/* Update number of bits */
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if ((context->count[0] += (input_len << 3u)) < (input_len << 3u))
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{
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context->count[1]++;
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}
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context->count[1] += (input_len >> 29u);
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part_len = 64 - index;
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/* Transform as many times as possible.
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*/
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if (input_len >= part_len)
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{
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std::memcpy(&context->buffer[index], (input), part_len);
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Transform(context->state, context->buffer);
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for (i = part_len; i + 63 < input_len; i += 64)
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{
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Transform(context->state, &input[i]);
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}
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index = 0;
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} else
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{
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i = 0;
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}
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/* Buffer remaining input */
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std::memcpy(&context->buffer[index], (&input[i]), input_len - i);
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}
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void Final(uint8_t digest[16], CTX* context)
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{
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unsigned char bits[8];
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unsigned int index = 0;
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unsigned int pad_len = 0;
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/* Save number of bits */
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Encode(bits, context->count, 8);
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/* Pad out to 56 mod 64.
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*/
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index = ((context->count[0] >> 3u) & 0x3fu);
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pad_len = (index < 56) ? (56 - index) : (120 - index);
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Update(context, g_padding, pad_len);
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/* Append length (before padding) */
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Update(context, bits, 8);
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/* Store state in digest */
|
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Encode(digest, context->state, 16);
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/* Zeroize sensitive information.
|
||||
*/
|
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std::memset(reinterpret_cast<uint8_t*>(context), 0, sizeof(*context));
|
||||
}
|
||||
|
||||
static void Transform(uint32_t state[4], const uint8_t block[64])
|
||||
{
|
||||
uint32_t a = state[0];
|
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uint32_t b = state[1];
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||||
uint32_t c = state[2];
|
||||
uint32_t d = state[3];
|
||||
uint32_t x[16];
|
||||
|
||||
Decode(x, block, 64);
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||||
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||||
/* Round 1 */
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FF(&a, b, c, d, x[0], S11, 0xd76aa478); /* 1 */
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||||
FF(&d, a, b, c, x[1], S12, 0xe8c7b756); /* 2 */
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||||
FF(&c, d, a, b, x[2], S13, 0x242070db); /* 3 */
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FF(&b, c, d, a, x[3], S14, 0xc1bdceee); /* 4 */
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FF(&a, b, c, d, x[4], S11, 0xf57c0faf); /* 5 */
|
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FF(&d, a, b, c, x[5], S12, 0x4787c62a); /* 6 */
|
||||
FF(&c, d, a, b, x[6], S13, 0xa8304613); /* 7 */
|
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FF(&b, c, d, a, x[7], S14, 0xfd469501); /* 8 */
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FF(&a, b, c, d, x[8], S11, 0x698098d8); /* 9 */
|
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FF(&d, a, b, c, x[9], S12, 0x8b44f7af); /* 10 */
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FF(&c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */
|
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FF(&b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */
|
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FF(&a, b, c, d, x[12], S11, 0x6b901122); /* 13 */
|
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FF(&d, a, b, c, x[13], S12, 0xfd987193); /* 14 */
|
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FF(&c, d, a, b, x[14], S13, 0xa679438e); /* 15 */
|
||||
FF(&b, c, d, a, x[15], S14, 0x49b40821); /* 16 */
|
||||
|
||||
/* Round 2 */
|
||||
GG(&a, b, c, d, x[1], S21, 0xf61e2562); /* 17 */
|
||||
GG(&d, a, b, c, x[6], S22, 0xc040b340); /* 18 */
|
||||
GG(&c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */
|
||||
GG(&b, c, d, a, x[0], S24, 0xe9b6c7aa); /* 20 */
|
||||
GG(&a, b, c, d, x[5], S21, 0xd62f105d); /* 21 */
|
||||
GG(&d, a, b, c, x[10], S22, 0x2441453); /* 22 */
|
||||
GG(&c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */
|
||||
GG(&b, c, d, a, x[4], S24, 0xe7d3fbc8); /* 24 */
|
||||
GG(&a, b, c, d, x[9], S21, 0x21e1cde6); /* 25 */
|
||||
GG(&d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */
|
||||
GG(&c, d, a, b, x[3], S23, 0xf4d50d87); /* 27 */
|
||||
|
||||
GG(&b, c, d, a, x[8], S24, 0x455a14ed); /* 28 */
|
||||
GG(&a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */
|
||||
GG(&d, a, b, c, x[2], S22, 0xfcefa3f8); /* 30 */
|
||||
GG(&c, d, a, b, x[7], S23, 0x676f02d9); /* 31 */
|
||||
GG(&b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */
|
||||
|
||||
/* Round 3 */
|
||||
HH(&a, b, c, d, x[5], S31, 0xfffa3942); /* 33 */
|
||||
HH(&d, a, b, c, x[8], S32, 0x8771f681); /* 34 */
|
||||
HH(&c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */
|
||||
HH(&b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */
|
||||
HH(&a, b, c, d, x[1], S31, 0xa4beea44); /* 37 */
|
||||
HH(&d, a, b, c, x[4], S32, 0x4bdecfa9); /* 38 */
|
||||
HH(&c, d, a, b, x[7], S33, 0xf6bb4b60); /* 39 */
|
||||
HH(&b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */
|
||||
HH(&a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */
|
||||
HH(&d, a, b, c, x[0], S32, 0xeaa127fa); /* 42 */
|
||||
HH(&c, d, a, b, x[3], S33, 0xd4ef3085); /* 43 */
|
||||
HH(&b, c, d, a, x[6], S34, 0x4881d05); /* 44 */
|
||||
HH(&a, b, c, d, x[9], S31, 0xd9d4d039); /* 45 */
|
||||
HH(&d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */
|
||||
HH(&c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */
|
||||
HH(&b, c, d, a, x[2], S34, 0xc4ac5665); /* 48 */
|
||||
|
||||
/* Round 4 */
|
||||
II(&a, b, c, d, x[0], S41, 0xf4292244); /* 49 */
|
||||
II(&d, a, b, c, x[7], S42, 0x432aff97); /* 50 */
|
||||
II(&c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */
|
||||
II(&b, c, d, a, x[5], S44, 0xfc93a039); /* 52 */
|
||||
II(&a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */
|
||||
II(&d, a, b, c, x[3], S42, 0x8f0ccc92); /* 54 */
|
||||
II(&c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */
|
||||
II(&b, c, d, a, x[1], S44, 0x85845dd1); /* 56 */
|
||||
II(&a, b, c, d, x[8], S41, 0x6fa87e4f); /* 57 */
|
||||
II(&d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */
|
||||
II(&c, d, a, b, x[6], S43, 0xa3014314); /* 59 */
|
||||
II(&b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */
|
||||
II(&a, b, c, d, x[4], S41, 0xf7537e82); /* 61 */
|
||||
II(&d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */
|
||||
II(&c, d, a, b, x[2], S43, 0x2ad7d2bb); /* 63 */
|
||||
II(&b, c, d, a, x[9], S44, 0xeb86d391); /* 64 */
|
||||
|
||||
state[0] += a;
|
||||
state[1] += b;
|
||||
state[2] += c;
|
||||
state[3] += d;
|
||||
|
||||
/* Zeroize sensitive information.
|
||||
*/
|
||||
std::memset(reinterpret_cast<uint8_t*>(x), 0, sizeof(x));
|
||||
}
|
||||
|
||||
/* Encodes input (uint32_t) into output (unsigned char). Assumes len is
|
||||
a multiple of 4.
|
||||
*/
|
||||
static void Encode(uint8_t* output, const uint32_t* input, uint32_t len)
|
||||
{
|
||||
unsigned int i = 0;
|
||||
unsigned int j = 0;
|
||||
|
||||
for (i = 0, j = 0; j < len; i++, j += 4)
|
||||
{
|
||||
output[j] = static_cast<unsigned char>(input[i] & 0xffu);
|
||||
output[j + 1] = static_cast<unsigned char>((input[i] >> 8u) & 0xffu);
|
||||
output[j + 2] = static_cast<unsigned char>((input[i] >> 16u) & 0xffu);
|
||||
output[j + 3] = static_cast<unsigned char>((input[i] >> 24u) & 0xffu);
|
||||
}
|
||||
}
|
||||
|
||||
/* Decodes input (unsigned char) into output (uint32_t). Assumes len is
|
||||
a multiple of 4.
|
||||
*/
|
||||
static void Decode(uint32_t* output, const uint8_t* input, uint32_t len)
|
||||
{
|
||||
unsigned int i = 0;
|
||||
unsigned int j = 0;
|
||||
|
||||
for (i = 0, j = 0; j < len; i++, j += 4)
|
||||
{
|
||||
output[i] = (static_cast<uint32_t>(input[j])) | ((static_cast<uint32_t>(input[j + 1])) << 8u) |
|
||||
((static_cast<uint32_t>(input[j + 2])) << 16u) | ((static_cast<uint32_t>(input[j + 3])) << 24u);
|
||||
}
|
||||
}
|
||||
|
||||
Core::ByteBuffer Hash(const uint8_t* buf, uint32_t length)
|
||||
{
|
||||
CTX ctx {};
|
||||
Core::ByteBuffer ret(16);
|
||||
|
||||
Init(&ctx);
|
||||
Update(&ctx, buf, length);
|
||||
Final(reinterpret_cast<uint8_t*>(ret.GetData()), &ctx);
|
||||
return ret;
|
||||
}
|
||||
|
||||
Core::ByteBuffer Hash(const Core::ByteBuffer& buf)
|
||||
{
|
||||
return Hash(reinterpret_cast<const uint8_t*>(buf.GetDataConst()), buf.Size());
|
||||
}
|
||||
|
||||
Core::ByteBuffer Hash(const String& str)
|
||||
{
|
||||
String::Utf8 utf8 = str.utf8_str();
|
||||
return Hash(reinterpret_cast<const uint8_t*>(utf8.GetDataConst()), utf8.Size() - 1);
|
||||
}
|
||||
|
||||
} // namespace MD5
|
||||
|
||||
namespace CRC32 {
|
||||
|
||||
static uint32_t g_crc_table[256] = {0};
|
||||
static bool g_crc_initialized = false;
|
||||
|
||||
uint32_t Hash(const uint8_t* buf, uint32_t length)
|
||||
{
|
||||
uint32_t crc = 0;
|
||||
|
||||
if (!g_crc_initialized)
|
||||
{
|
||||
for (int i = 0; i < 256; i++)
|
||||
{
|
||||
crc = i;
|
||||
for (int j = 0; j < 8; j++)
|
||||
{
|
||||
crc = (crc & 1u) != 0u ? (crc >> 1u) ^ 0xEDB88320u : crc >> 1u;
|
||||
}
|
||||
g_crc_table[i] = crc;
|
||||
};
|
||||
|
||||
g_crc_initialized = true;
|
||||
}
|
||||
|
||||
crc = 0xFFFFFFFF;
|
||||
while ((length--) != 0u)
|
||||
{
|
||||
crc = g_crc_table[(crc ^ *buf++) & 0xFFu] ^ (crc >> 8u);
|
||||
}
|
||||
|
||||
return crc ^ 0xFFFFFFFF;
|
||||
}
|
||||
|
||||
uint32_t Hash(const Core::ByteBuffer& buf)
|
||||
{
|
||||
return Hash(reinterpret_cast<const uint8_t*>(buf.GetDataConst()), buf.Size());
|
||||
}
|
||||
|
||||
uint32_t Hash(const String& str)
|
||||
{
|
||||
String::Utf8 utf8 = str.utf8_str();
|
||||
return Hash(reinterpret_cast<const uint8_t*>(utf8.GetDataConst()), utf8.Size() - 1);
|
||||
}
|
||||
|
||||
} // namespace CRC32
|
||||
|
||||
} // namespace Kyty::Math
|
||||
@@ -0,0 +1,15 @@
|
||||
#include "Kyty/Math/MathAll.h" // IWYU pragma: associated
|
||||
#include "Kyty/Math/Rand.h"
|
||||
|
||||
namespace Kyty::Math {
|
||||
|
||||
KYTY_SUBSYSTEM_INIT(Math)
|
||||
{
|
||||
Rand::Init();
|
||||
}
|
||||
|
||||
KYTY_SUBSYSTEM_UNEXPECTED_SHUTDOWN(Math) {}
|
||||
|
||||
KYTY_SUBSYSTEM_DESTROY(Math) {}
|
||||
|
||||
} // namespace Kyty::Math
|
||||
@@ -0,0 +1,153 @@
|
||||
#include "Kyty/Math/Rand.h"
|
||||
|
||||
#include "Kyty/Core/DateTime.h"
|
||||
#include "Kyty/Core/DbgAssert.h"
|
||||
|
||||
#include <cfloat>
|
||||
#include <cmath>
|
||||
#include <random>
|
||||
|
||||
namespace Kyty::Math {
|
||||
|
||||
struct RandContextT // NOLINT(cert-msc32-c,cert-msc51-cpp)
|
||||
{
|
||||
std::mt19937 rnd;
|
||||
std::uniform_real_distribution<double> double_distribution = std::uniform_real_distribution<double>(0.0, 1.0);
|
||||
std::uniform_real_distribution<double> double_distribution_i =
|
||||
std::uniform_real_distribution<double>(0.0, std::nextafter(1.0, DBL_MAX));
|
||||
std::uniform_real_distribution<float> float_distribution = std::uniform_real_distribution<float>(0.0f, 1.0f);
|
||||
std::uniform_real_distribution<float> float_distribution_i =
|
||||
std::uniform_real_distribution<float>(0.0f, std::nextafterf(1.0f, FLT_MAX));
|
||||
};
|
||||
|
||||
RandContextT* g_rand_context = nullptr;
|
||||
|
||||
void Rand::Init()
|
||||
{
|
||||
g_rand_context = new RandContextT;
|
||||
}
|
||||
|
||||
// random in range [0, 2^32-1]
|
||||
uint32_t Rand::Uint()
|
||||
{
|
||||
return g_rand_context->rnd();
|
||||
}
|
||||
|
||||
// random in range [0.0, 1.0]
|
||||
double Rand::DoubleInclusive()
|
||||
{
|
||||
return g_rand_context->double_distribution_i(g_rand_context->rnd);
|
||||
}
|
||||
|
||||
// random in range [0.0, 1.0)
|
||||
double Rand::Double()
|
||||
{
|
||||
return g_rand_context->double_distribution(g_rand_context->rnd);
|
||||
}
|
||||
|
||||
// random in range [from, to]
|
||||
double Rand::DoubleInclusiveRange(double from_incl, double to_incl)
|
||||
{
|
||||
EXIT_IF(!(from_incl <= to_incl));
|
||||
|
||||
if (from_incl == to_incl)
|
||||
{
|
||||
return from_incl;
|
||||
}
|
||||
|
||||
std::uniform_real_distribution<double> d(from_incl, std::nextafter(to_incl, DBL_MAX));
|
||||
return d(g_rand_context->rnd);
|
||||
}
|
||||
|
||||
// random in range [from, to)
|
||||
double Rand::DoubleRange(double from_incl, double to_excl)
|
||||
{
|
||||
EXIT_IF(!(from_incl < to_excl));
|
||||
|
||||
std::uniform_real_distribution<double> d(from_incl, to_excl);
|
||||
return d(g_rand_context->rnd);
|
||||
}
|
||||
|
||||
// random in range [0.0, 1.0]
|
||||
float Rand::FloatInclusive()
|
||||
{
|
||||
return g_rand_context->float_distribution_i(g_rand_context->rnd);
|
||||
}
|
||||
|
||||
// random in range [0.0, 1.0)
|
||||
float Rand::Float()
|
||||
{
|
||||
return g_rand_context->float_distribution(g_rand_context->rnd);
|
||||
}
|
||||
|
||||
// random in range [from, to]
|
||||
float Rand::FloatInclusiveRange(float from_incl, float to_incl)
|
||||
{
|
||||
EXIT_IF(!(from_incl <= to_incl));
|
||||
|
||||
if (from_incl == to_incl)
|
||||
{
|
||||
return from_incl;
|
||||
}
|
||||
|
||||
std::uniform_real_distribution<float> d(from_incl, std::nextafterf(to_incl, FLT_MAX));
|
||||
return d(g_rand_context->rnd);
|
||||
}
|
||||
|
||||
// random in range [from, to)
|
||||
float Rand::FloatRange(float from_incl, float to_excl)
|
||||
{
|
||||
EXIT_IF(!(from_incl < to_excl));
|
||||
|
||||
std::uniform_real_distribution<float> d(from_incl, to_excl);
|
||||
return d(g_rand_context->rnd);
|
||||
}
|
||||
|
||||
// random in range [from, to]
|
||||
uint32_t Rand::UintInclusiveRange(uint32_t from_incl, uint32_t to_incl)
|
||||
{
|
||||
EXIT_IF(!(from_incl <= to_incl));
|
||||
|
||||
std::uniform_int_distribution<uint32_t> d(from_incl, to_incl);
|
||||
return d(g_rand_context->rnd);
|
||||
}
|
||||
|
||||
void Rand::Seed(unsigned int s)
|
||||
{
|
||||
g_rand_context->rnd.seed(s);
|
||||
}
|
||||
|
||||
// random in range [-2147483648, 2147483647]
|
||||
int32_t Rand::Int()
|
||||
{
|
||||
union cast_u
|
||||
{
|
||||
uint32_t in;
|
||||
int32_t out;
|
||||
} cast {};
|
||||
|
||||
cast.in = Uint();
|
||||
|
||||
return cast.out;
|
||||
}
|
||||
|
||||
// random in range [from, to]
|
||||
int32_t Rand::IntInclusiveRange(int32_t from_incl, int32_t to_incl)
|
||||
{
|
||||
EXIT_IF(!(from_incl <= to_incl));
|
||||
|
||||
std::uniform_int_distribution<int32_t> d(from_incl, to_incl);
|
||||
return d(g_rand_context->rnd);
|
||||
}
|
||||
|
||||
void Rand::SeedBySystemTime()
|
||||
{
|
||||
Rand::Seed(Core::Time::FromSystem().MsecTotal());
|
||||
}
|
||||
|
||||
std::mt19937 Rand::GetRandomEngine()
|
||||
{
|
||||
return g_rand_context->rnd;
|
||||
}
|
||||
|
||||
} // namespace Kyty::Math
|
||||
@@ -0,0 +1,19 @@
|
||||
#include "Kyty/Math/VectorAndMatrix.h"
|
||||
|
||||
//#include "Kyty/MathAll.h"
|
||||
|
||||
//#define VEC2_DECL
|
||||
//#include "vec2_impl.h"
|
||||
//#define VEC3_DECL
|
||||
//#include "vec3_impl.h"
|
||||
//#define VEC4_DECL
|
||||
//#include "vec4_impl.h"
|
||||
//#define MAT2_DECL
|
||||
//#include "mat2_impl.h"
|
||||
//#define MAT3_DECL
|
||||
//#include "mat3_impl.h"
|
||||
//#define MAT4_DECL
|
||||
//#include "mat4_impl.h"
|
||||
|
||||
namespace Kyty::Math::m {
|
||||
} // namespace Kyty::Math::m
|
||||
Reference in New Issue
Block a user