intutils.h

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/*
 * 2025 Quantum Resistant Cryptographic Solutions Corporation
 * All Rights Reserved.
 *
 * NOTICE: This software and all accompanying materials are the exclusive 
 * property of Quantum Resistant Cryptographic Solutions Corporation (QRCS).
 * The intellectual and technical concepts contained within this implementation 
 * are proprietary to QRCS and its authorized licensors and are protected under 
 * applicable U.S. and international copyright, patent, and trade secret laws.
 *
 * CRYPTOGRAPHIC STANDARDS:
 * - This software includes implementations of cryptographic algorithms such as 
 *   SHA3, AES, and others. These algorithms are public domain or standardized 
 *   by organizations such as NIST and are NOT the property of QRCS.
 * - However, all source code, optimizations, and implementations in this library 
 *   are original works of QRCS and are protected under this license.
 *
 * RESTRICTIONS:
 * - Redistribution, modification, or unauthorized distribution of this software, 
 *   in whole or in part, is strictly prohibited.
 * - This software is provided for non-commercial, educational, and research 
 *   purposes only. Commercial use in any form is expressly forbidden.
 * - Licensing and authorized distribution are solely at the discretion of QRCS.
 * - Any use of this software implies acceptance of these restrictions.
 *
 * DISCLAIMER:
 * This software is provided "as is," without warranty of any kind, express or 
 * implied, including but not limited to warranties of merchantability or fitness 
 * for a particular purpose. QRCS disclaims all liability for any direct, indirect, 
 * incidental, or consequential damages resulting from the use or misuse of this software.
 *
 * FULL LICENSE:
 * This software is subject to the **Quantum Resistant Cryptographic Solutions 
 * Proprietary License (QRCS-PL)**. The complete license terms are included 
 * in the LICENSE.txt file distributed with this software.
 *
 * Written by: John G. Underhill
 * Contact: john.underhill@protonmail.com
 */
 
#ifndef QSC_INTUTILS_H
#define QSC_INTUTILS_H
 
#include "common.h"
#include "intrinsics.h"
 
QSC_CPLUSPLUS_ENABLED_START


#define QSC_INTUTILS_KB_SIZE 1000ULL

#define QSC_INTUTILS_KIB_SIZE 1024ULL

#define QSC_INTUTILS_MB_SIZE 1000000ULL

#define QSC_INTUTILS_MIB_SIZE 1048576ULL

#define QSC_INTUTILS_GB_SIZE 1000000000ULL

#define QSC_INTUTILS_GIB_SIZE 1073741824ULL

#define QSC_INTUTILS_TB_SIZE 1000000000000ULL

#define QSC_INTUTILS_TIB_SIZE 1099511627776ULL

#define QSC_INTUTILS_PB_SIZE 1000000000000000ULL

#define QSC_INTUTILS_PIB_SIZE 1125899906842624ULL

#define QSC_INTUTILS_EB_SIZE 1000000000000000000ULL

#define QSC_INTUTILS_EIB_SIZE 1152921504606846976ULL

QSC_EXPORT_API bool qsc_intutils_are_equal8(const uint8_t* a, const uint8_t* b, size_t length);

QSC_EXPORT_API uint16_t qsc_intutils_be8to16(const uint8_t* input);

QSC_EXPORT_API uint32_t qsc_intutils_be8to32(const uint8_t* input);

QSC_EXPORT_API uint64_t qsc_intutils_be8to64(const uint8_t* input);

QSC_EXPORT_API void qsc_intutils_be16to8(uint8_t* output, uint16_t value);

QSC_EXPORT_API void qsc_intutils_be32to8(uint8_t* output, uint32_t value);

QSC_EXPORT_API void qsc_intutils_be64to8(uint8_t* output, uint64_t value);

QSC_EXPORT_API void qsc_intutils_be8increment(uint8_t* output, size_t otplen);

QSC_EXPORT_API size_t qsc_intutils_bit_reverse(size_t x, uint32_t bits);

QSC_EXPORT_API uint64_t qsc_intutils_bit_reverse_u64(uint64_t x);

QSC_EXPORT_API uint32_t qsc_intutils_bit_reverse_u32(uint32_t x);

QSC_EXPORT_API uint16_t qsc_intutils_bit_reverse_u16(uint16_t x);
 
#if defined(QSC_SYSTEM_HAS_AVX)
QSC_EXPORT_API void qsc_intutils_bswap32(uint32_t* dest, const uint32_t* source, size_t length);

QSC_EXPORT_API void qsc_intutils_bswap64(uint64_t* dest, const uint64_t* source, size_t length);
#endif

QSC_EXPORT_API double qsc_intutils_calculate_abs(double a);

QSC_EXPORT_API double qsc_intutils_calculate_exp(double x);

QSC_EXPORT_API double qsc_intutils_calculate_fabs(double x);

QSC_EXPORT_API double qsc_intutils_calculate_log(double x);

QSC_EXPORT_API double qsc_intutils_calculate_sqrt(double x);

QSC_EXPORT_API void qsc_intutils_clear8(uint8_t* a, size_t count);

QSC_EXPORT_API void qsc_intutils_clear16(uint16_t* a, size_t count);

QSC_EXPORT_API void qsc_intutils_clear32(uint32_t* a, size_t count);

QSC_EXPORT_API void qsc_intutils_clear64(uint64_t* a, size_t count);

QSC_EXPORT_API void qsc_intutils_cmov(uint8_t* dest, const uint8_t* source, size_t length, uint8_t cond);

QSC_EXPORT_API size_t qsc_intutils_expand_mask(size_t x);

QSC_EXPORT_API bool qsc_intutils_are_equal(size_t x, size_t y);

QSC_EXPORT_API bool qsc_intutils_is_gte(size_t x, size_t y);

QSC_EXPORT_API void qsc_intutils_hex_to_bin(const char* hexstr, uint8_t* output, size_t otplen);

QSC_EXPORT_API void qsc_intutils_bin_to_hex(const uint8_t* input, char* hexstr, size_t inplen);

QSC_EXPORT_API void qsc_intutils_le8increment(uint8_t* output, size_t otplen);
 
#if defined(QSC_SYSTEM_HAS_AVX)
QSC_EXPORT_API void qsc_intutils_leincrement_x128(__m128i* counter);
#endif
 
#if defined(QSC_SYSTEM_HAS_AVX512)
QSC_EXPORT_API void qsc_intutils_leincrement_x512(__m512i* counter);
#endif

QSC_EXPORT_API uint16_t qsc_intutils_le8to16(const uint8_t* input);

QSC_EXPORT_API uint32_t qsc_intutils_le8to32(const uint8_t* input);

QSC_EXPORT_API uint64_t qsc_intutils_le8to64(const uint8_t* input);

QSC_EXPORT_API void qsc_intutils_le16to8(uint8_t* output, uint16_t value);

QSC_EXPORT_API void qsc_intutils_le32to8(uint8_t* output, uint32_t value);

QSC_EXPORT_API void qsc_intutils_le64to8(uint8_t* output, uint64_t value);

QSC_EXPORT_API size_t qsc_intutils_max(size_t a, size_t b);

QSC_EXPORT_API size_t qsc_intutils_min(size_t a, size_t b);

QSC_EXPORT_API uint32_t qsc_intutils_popcount32(uint32_t v);
 
#if defined(QSC_SYSTEM_HAS_AVX)
QSC_EXPORT_API void qsc_intutils_reverse_bytes_x128(const __m128i* input, __m128i* output);
#endif
 
#if defined(QSC_SYSTEM_HAS_AVX512)
QSC_EXPORT_API void qsc_intutils_reverse_bytes_x512(const __m512i* input, __m512i* output);
#endif

QSC_EXPORT_API uint32_t qsc_intutils_rotl32(uint32_t value, size_t shift);

QSC_EXPORT_API uint64_t qsc_intutils_rotl64(uint64_t value, size_t shift);

QSC_EXPORT_API uint32_t qsc_intutils_rotr32(uint32_t value, size_t shift);

QSC_EXPORT_API uint64_t qsc_intutils_rotr64(uint64_t value, size_t shift);

QSC_EXPORT_API int32_t qsc_intutils_verify(const uint8_t* a, const uint8_t* b, size_t length);
 
QSC_CPLUSPLUS_ENABLED_END
 
#endif