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Title "OPENSSL_LOAD_U16_LE 3ossl" For nroff, turn off justification. Always turn off hyphenation; it makes
way too many mistakes in technical documents.
OPENSSL_load_u16_le, OPENSSL_load_u16_be, OPENSSL_load_u32_le, OPENSSL_load_u32_be, OPENSSL_load_u64_le, OPENSSL_load_u64_be, OPENSSL_store_u16_le, OPENSSL_store_u16_be, OPENSSL_store_u32_le, OPENSSL_store_u32_be, OPENSSL_store_u64_le, OPENSSL_store_u64_be - Read and write unsigned 16, 32 and 64-bit integers in a specific byte order Header "SYNOPSIS" .Vb 1 #include <openssl/byteorder.h> \& static ossl_inline unsigned char *OPENSSL_store_u16_le( unsigned char *out, uint16_t val); static ossl_inline unsigned char *OPENSSL_store_u16_be( unsigned char *out, uint16_t val); static ossl_inline unsigned char *OPENSSL_store_u32_le( unsigned char *out, uint32_t val); static ossl_inline unsigned char *OPENSSL_store_u32_be( unsigned char *out, uint32_t val); static ossl_inline unsigned char *OPENSSL_store_u64_le( unsigned char *out, uint64_t val); static ossl_inline unsigned char *OPENSSL_store_u64_be( unsigned char *out, uint64_t val); static ossl_inline const unsigned char *OPENSSL_load_u16_le( uint16_t *val, const unsigned char *in); static ossl_inline const unsigned char *OPENSSL_load_u16_be( uint16_t *val, const unsigned char *in); static ossl_inline const unsigned char *OPENSSL_load_u32_le( uint32_t *val, const unsigned char *in); static ossl_inline const unsigned char *OPENSSL_load_u32_be( uint32_t *val, const unsigned char *in); static ossl_inline const unsigned char *OPENSSL_load_u64_le( uint64_t *val, const unsigned char *in); static ossl_inline const unsigned char *OPENSSL_load_u64_be( uint64_t *val, const unsigned char *in); .Ve Header "DESCRIPTION" These functions read and write 16, 32 and 64 bit unsigned integers in a specified byte order. The \*(C`_be\*(C' functions use big-endian byte order, while the \*(C`_le\*(C' functions use little-endian byte order. They're implemented directly in the header file, and declared static. When the compiler supports inline functions, they're also declared inline. An optimising compiler will often convert these to just one or two machine instructions: a load or store with a possible byte swap.

The \*(C`load\*(C' functions write the decoded integer value at the address pointed to by val, which must be a valid (possibly suitably aligned) address of an object of the appropriate type. The \*(C`store\*(C' functions write the encoding of val at the address pointed to by out.

For convenience, these functions return the updated input or output pointer, making it easy to continue reading or writing more data at the next memory location.

No bounds checks are performed, the caller is responsible for making sure that the input or output buffers are sufficiently large for the requested read or write.

Header "RETURN VALUES" All these functions return the next memory address following the last byte written or read. Header "HISTORY" These functions were added in OpenSSL 3.5. Header "COPYRIGHT" Copyright 2025 The OpenSSL Project Authors. All Rights Reserved.

Licensed under the Apache License 2.0 (the "License"). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at <https://www.openssl.org/source/license.html>.