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Kha/Backends/Kinc-hxcpp/khacpp/project/thirdparty/mbedtls-2.28.2/library/common.h
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Kha/Backends/Kinc-hxcpp/khacpp/project/thirdparty/mbedtls-2.28.2/library/common.h
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/**
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* \file common.h
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*
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* \brief Utility macros for internal use in the library
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*/
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/*
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* Copyright The Mbed TLS Contributors
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef MBEDTLS_LIBRARY_COMMON_H
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#define MBEDTLS_LIBRARY_COMMON_H
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#if defined(MBEDTLS_CONFIG_FILE)
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#include MBEDTLS_CONFIG_FILE
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#else
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#include "mbedtls/config.h"
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#endif
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#include <stddef.h>
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#include <stdint.h>
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/* Define `inline` on some non-C99-compliant compilers. */
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#if ( defined(__ARMCC_VERSION) || defined(_MSC_VER) ) && \
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!defined(inline) && !defined(__cplusplus)
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#define inline __inline
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#endif
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/** Helper to define a function as static except when building invasive tests.
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*
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* If a function is only used inside its own source file and should be
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* declared `static` to allow the compiler to optimize for code size,
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* but that function has unit tests, define it with
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* ```
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* MBEDTLS_STATIC_TESTABLE int mbedtls_foo(...) { ... }
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* ```
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* and declare it in a header in the `library/` directory with
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* ```
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* #if defined(MBEDTLS_TEST_HOOKS)
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* int mbedtls_foo(...);
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* #endif
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* ```
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*/
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#if defined(MBEDTLS_TEST_HOOKS)
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#define MBEDTLS_STATIC_TESTABLE
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#else
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#define MBEDTLS_STATIC_TESTABLE static
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#endif
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/** Return an offset into a buffer.
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*
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* This is just the addition of an offset to a pointer, except that this
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* function also accepts an offset of 0 into a buffer whose pointer is null.
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* (`p + n` has undefined behavior when `p` is null, even when `n == 0`.
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* A null pointer is a valid buffer pointer when the size is 0, for example
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* as the result of `malloc(0)` on some platforms.)
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*
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* \param p Pointer to a buffer of at least n bytes.
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* This may be \p NULL if \p n is zero.
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* \param n An offset in bytes.
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* \return Pointer to offset \p n in the buffer \p p.
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* Note that this is only a valid pointer if the size of the
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* buffer is at least \p n + 1.
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*/
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static inline unsigned char *mbedtls_buffer_offset(
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unsigned char *p, size_t n )
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{
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return( p == NULL ? NULL : p + n );
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}
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/** Return an offset into a read-only buffer.
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*
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* Similar to mbedtls_buffer_offset(), but for const pointers.
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*
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* \param p Pointer to a buffer of at least n bytes.
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* This may be \p NULL if \p n is zero.
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* \param n An offset in bytes.
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* \return Pointer to offset \p n in the buffer \p p.
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* Note that this is only a valid pointer if the size of the
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* buffer is at least \p n + 1.
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*/
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static inline const unsigned char *mbedtls_buffer_offset_const(
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const unsigned char *p, size_t n )
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{
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return( p == NULL ? NULL : p + n );
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}
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/** Byte Reading Macros
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*
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* Given a multi-byte integer \p x, MBEDTLS_BYTE_n retrieves the n-th
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* byte from x, where byte 0 is the least significant byte.
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*/
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#define MBEDTLS_BYTE_0( x ) ( (uint8_t) ( ( x ) & 0xff ) )
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#define MBEDTLS_BYTE_1( x ) ( (uint8_t) ( ( ( x ) >> 8 ) & 0xff ) )
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#define MBEDTLS_BYTE_2( x ) ( (uint8_t) ( ( ( x ) >> 16 ) & 0xff ) )
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#define MBEDTLS_BYTE_3( x ) ( (uint8_t) ( ( ( x ) >> 24 ) & 0xff ) )
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#define MBEDTLS_BYTE_4( x ) ( (uint8_t) ( ( ( x ) >> 32 ) & 0xff ) )
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#define MBEDTLS_BYTE_5( x ) ( (uint8_t) ( ( ( x ) >> 40 ) & 0xff ) )
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#define MBEDTLS_BYTE_6( x ) ( (uint8_t) ( ( ( x ) >> 48 ) & 0xff ) )
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#define MBEDTLS_BYTE_7( x ) ( (uint8_t) ( ( ( x ) >> 56 ) & 0xff ) )
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/**
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* Get the unsigned 32 bits integer corresponding to four bytes in
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* big-endian order (MSB first).
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*
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* \param data Base address of the memory to get the four bytes from.
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* \param offset Offset from \p base of the first and most significant
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* byte of the four bytes to build the 32 bits unsigned
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* integer from.
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*/
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#ifndef MBEDTLS_GET_UINT32_BE
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#define MBEDTLS_GET_UINT32_BE( data , offset ) \
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( \
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( (uint32_t) ( data )[( offset ) ] << 24 ) \
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| ( (uint32_t) ( data )[( offset ) + 1] << 16 ) \
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| ( (uint32_t) ( data )[( offset ) + 2] << 8 ) \
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| ( (uint32_t) ( data )[( offset ) + 3] ) \
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)
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#endif
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/**
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* Put in memory a 32 bits unsigned integer in big-endian order.
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*
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* \param n 32 bits unsigned integer to put in memory.
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* \param data Base address of the memory where to put the 32
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* bits unsigned integer in.
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* \param offset Offset from \p base where to put the most significant
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* byte of the 32 bits unsigned integer \p n.
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*/
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#ifndef MBEDTLS_PUT_UINT32_BE
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#define MBEDTLS_PUT_UINT32_BE( n, data, offset ) \
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{ \
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( data )[( offset ) ] = MBEDTLS_BYTE_3( n ); \
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( data )[( offset ) + 1] = MBEDTLS_BYTE_2( n ); \
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( data )[( offset ) + 2] = MBEDTLS_BYTE_1( n ); \
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( data )[( offset ) + 3] = MBEDTLS_BYTE_0( n ); \
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}
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#endif
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/**
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* Get the unsigned 32 bits integer corresponding to four bytes in
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* little-endian order (LSB first).
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*
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* \param data Base address of the memory to get the four bytes from.
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* \param offset Offset from \p base of the first and least significant
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* byte of the four bytes to build the 32 bits unsigned
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* integer from.
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*/
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#ifndef MBEDTLS_GET_UINT32_LE
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#define MBEDTLS_GET_UINT32_LE( data, offset ) \
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( \
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( (uint32_t) ( data )[( offset ) ] ) \
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| ( (uint32_t) ( data )[( offset ) + 1] << 8 ) \
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| ( (uint32_t) ( data )[( offset ) + 2] << 16 ) \
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| ( (uint32_t) ( data )[( offset ) + 3] << 24 ) \
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)
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#endif
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/**
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* Put in memory a 32 bits unsigned integer in little-endian order.
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*
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* \param n 32 bits unsigned integer to put in memory.
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* \param data Base address of the memory where to put the 32
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* bits unsigned integer in.
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* \param offset Offset from \p base where to put the least significant
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* byte of the 32 bits unsigned integer \p n.
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*/
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#ifndef MBEDTLS_PUT_UINT32_LE
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#define MBEDTLS_PUT_UINT32_LE( n, data, offset ) \
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{ \
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( data )[( offset ) ] = MBEDTLS_BYTE_0( n ); \
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( data )[( offset ) + 1] = MBEDTLS_BYTE_1( n ); \
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( data )[( offset ) + 2] = MBEDTLS_BYTE_2( n ); \
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( data )[( offset ) + 3] = MBEDTLS_BYTE_3( n ); \
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}
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#endif
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/**
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* Get the unsigned 16 bits integer corresponding to two bytes in
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* little-endian order (LSB first).
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*
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* \param data Base address of the memory to get the two bytes from.
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* \param offset Offset from \p base of the first and least significant
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* byte of the two bytes to build the 16 bits unsigned
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* integer from.
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*/
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#ifndef MBEDTLS_GET_UINT16_LE
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#define MBEDTLS_GET_UINT16_LE( data, offset ) \
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( \
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( (uint16_t) ( data )[( offset ) ] ) \
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| ( (uint16_t) ( data )[( offset ) + 1] << 8 ) \
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)
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#endif
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/**
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* Put in memory a 16 bits unsigned integer in little-endian order.
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*
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* \param n 16 bits unsigned integer to put in memory.
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* \param data Base address of the memory where to put the 16
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* bits unsigned integer in.
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* \param offset Offset from \p base where to put the least significant
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* byte of the 16 bits unsigned integer \p n.
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*/
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#ifndef MBEDTLS_PUT_UINT16_LE
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#define MBEDTLS_PUT_UINT16_LE( n, data, offset ) \
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{ \
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( data )[( offset ) ] = MBEDTLS_BYTE_0( n ); \
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( data )[( offset ) + 1] = MBEDTLS_BYTE_1( n ); \
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}
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#endif
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/**
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* Get the unsigned 16 bits integer corresponding to two bytes in
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* big-endian order (MSB first).
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*
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* \param data Base address of the memory to get the two bytes from.
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* \param offset Offset from \p base of the first and most significant
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* byte of the two bytes to build the 16 bits unsigned
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* integer from.
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*/
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#ifndef MBEDTLS_GET_UINT16_BE
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#define MBEDTLS_GET_UINT16_BE( data, offset ) \
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( \
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( (uint16_t) ( data )[( offset ) ] << 8 ) \
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| ( (uint16_t) ( data )[( offset ) + 1] ) \
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)
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#endif
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/**
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* Put in memory a 16 bits unsigned integer in big-endian order.
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*
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* \param n 16 bits unsigned integer to put in memory.
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* \param data Base address of the memory where to put the 16
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* bits unsigned integer in.
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* \param offset Offset from \p base where to put the most significant
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* byte of the 16 bits unsigned integer \p n.
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*/
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#ifndef MBEDTLS_PUT_UINT16_BE
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#define MBEDTLS_PUT_UINT16_BE( n, data, offset ) \
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{ \
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( data )[( offset ) ] = MBEDTLS_BYTE_1( n ); \
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( data )[( offset ) + 1] = MBEDTLS_BYTE_0( n ); \
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}
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#endif
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/**
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* Get the unsigned 64 bits integer corresponding to eight bytes in
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* big-endian order (MSB first).
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*
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* \param data Base address of the memory to get the eight bytes from.
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* \param offset Offset from \p base of the first and most significant
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* byte of the eight bytes to build the 64 bits unsigned
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* integer from.
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*/
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#ifndef MBEDTLS_GET_UINT64_BE
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#define MBEDTLS_GET_UINT64_BE( data, offset ) \
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( \
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( (uint64_t) ( data )[( offset ) ] << 56 ) \
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| ( (uint64_t) ( data )[( offset ) + 1] << 48 ) \
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| ( (uint64_t) ( data )[( offset ) + 2] << 40 ) \
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| ( (uint64_t) ( data )[( offset ) + 3] << 32 ) \
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| ( (uint64_t) ( data )[( offset ) + 4] << 24 ) \
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| ( (uint64_t) ( data )[( offset ) + 5] << 16 ) \
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| ( (uint64_t) ( data )[( offset ) + 6] << 8 ) \
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| ( (uint64_t) ( data )[( offset ) + 7] ) \
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)
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#endif
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/**
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* Put in memory a 64 bits unsigned integer in big-endian order.
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*
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* \param n 64 bits unsigned integer to put in memory.
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* \param data Base address of the memory where to put the 64
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* bits unsigned integer in.
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* \param offset Offset from \p base where to put the most significant
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* byte of the 64 bits unsigned integer \p n.
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*/
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#ifndef MBEDTLS_PUT_UINT64_BE
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#define MBEDTLS_PUT_UINT64_BE( n, data, offset ) \
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{ \
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( data )[( offset ) ] = MBEDTLS_BYTE_7( n ); \
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( data )[( offset ) + 1] = MBEDTLS_BYTE_6( n ); \
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( data )[( offset ) + 2] = MBEDTLS_BYTE_5( n ); \
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( data )[( offset ) + 3] = MBEDTLS_BYTE_4( n ); \
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( data )[( offset ) + 4] = MBEDTLS_BYTE_3( n ); \
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( data )[( offset ) + 5] = MBEDTLS_BYTE_2( n ); \
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( data )[( offset ) + 6] = MBEDTLS_BYTE_1( n ); \
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( data )[( offset ) + 7] = MBEDTLS_BYTE_0( n ); \
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}
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#endif
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/**
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* Get the unsigned 64 bits integer corresponding to eight bytes in
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* little-endian order (LSB first).
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*
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* \param data Base address of the memory to get the eight bytes from.
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* \param offset Offset from \p base of the first and least significant
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* byte of the eight bytes to build the 64 bits unsigned
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* integer from.
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*/
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#ifndef MBEDTLS_GET_UINT64_LE
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#define MBEDTLS_GET_UINT64_LE( data, offset ) \
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( \
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( (uint64_t) ( data )[( offset ) + 7] << 56 ) \
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| ( (uint64_t) ( data )[( offset ) + 6] << 48 ) \
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| ( (uint64_t) ( data )[( offset ) + 5] << 40 ) \
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| ( (uint64_t) ( data )[( offset ) + 4] << 32 ) \
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| ( (uint64_t) ( data )[( offset ) + 3] << 24 ) \
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| ( (uint64_t) ( data )[( offset ) + 2] << 16 ) \
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| ( (uint64_t) ( data )[( offset ) + 1] << 8 ) \
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| ( (uint64_t) ( data )[( offset ) ] ) \
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)
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#endif
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/**
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* Put in memory a 64 bits unsigned integer in little-endian order.
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*
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* \param n 64 bits unsigned integer to put in memory.
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* \param data Base address of the memory where to put the 64
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* bits unsigned integer in.
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* \param offset Offset from \p base where to put the least significant
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* byte of the 64 bits unsigned integer \p n.
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*/
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#ifndef MBEDTLS_PUT_UINT64_LE
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#define MBEDTLS_PUT_UINT64_LE( n, data, offset ) \
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{ \
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( data )[( offset ) ] = MBEDTLS_BYTE_0( n ); \
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( data )[( offset ) + 1] = MBEDTLS_BYTE_1( n ); \
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( data )[( offset ) + 2] = MBEDTLS_BYTE_2( n ); \
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( data )[( offset ) + 3] = MBEDTLS_BYTE_3( n ); \
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( data )[( offset ) + 4] = MBEDTLS_BYTE_4( n ); \
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( data )[( offset ) + 5] = MBEDTLS_BYTE_5( n ); \
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( data )[( offset ) + 6] = MBEDTLS_BYTE_6( n ); \
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( data )[( offset ) + 7] = MBEDTLS_BYTE_7( n ); \
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}
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#endif
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#endif /* MBEDTLS_LIBRARY_COMMON_H */
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