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bit16gen.h
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/*
* bit16gen.h
*
* Copyright (C) 2014 Max <max.suraev@fairwaves.co>
*
* All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#pragma once
#include <osmocom/core/utils.h>
static inline uint16_t osmo_load16le_ext(const void *p, uint8_t n)
{
uint8_t i;
uint16_t r = 0;
const uint8_t *q = (uint8_t *)p;
OSMO_ASSERT(n <= sizeof(r));
for(i = 0; i < n; r |= ((uint16_t)q[i] << (8 * i)), i++);
return r;
}
static inline uint16_t osmo_load16be_ext(const void *p, uint8_t n)
{
uint8_t i;
uint16_t r = 0;
const uint8_t *q = (uint8_t *)p;
OSMO_ASSERT(n <= sizeof(r));
for(i = 0; i < n; r |= ((uint16_t)q[i] << (16 - 8* (1 + i))), i++);
return r;
}
static inline uint16_t osmo_load16be_ext_2(const void *p, uint8_t n)
{
uint8_t i;
uint16_t r = 0;
const uint8_t *q = (uint8_t *)p;
OSMO_ASSERT(n <= sizeof(r));
for(i = 0; i < n; r |= ((uint16_t)q[i] << (16 - 8* (1 + i + (sizeof(r) - n)))), i++);
return r;
}
static inline void osmo_store16le_ext(uint16_t x, void *p, uint8_t n)
{
uint8_t i;
uint8_t *q = (uint8_t *)p;
OSMO_ASSERT(n <= sizeof(x));
for(i = 0; i < n; q[i] = (x >> i * 8) & 0xFF, i++);
}
static inline void osmo_store16be_ext(uint16_t x, void *p, uint8_t n)
{
uint8_t i;
uint8_t *q = (uint8_t *)p;
OSMO_ASSERT(n <= sizeof(x));
for(i = 0; i < n; q[i] = (x >> ((n - 1 - i) * 8)) & 0xFF, i++);
}
/* Convenience function for most-used cases */
static inline uint16_t osmo_load16le(const void *p)
{
return osmo_load16le_ext(p, 16 / 8);
}
static inline uint16_t osmo_load16be(const void *p)
{
return osmo_load16be_ext(p, 16 / 8);
}
static inline void osmo_store16le(uint16_t x, void *p)
{
osmo_store16le_ext(x, p, 16 / 8);
}
static inline void osmo_store16be(uint16_t x, void *p)
{
osmo_store16be_ext(x, p, 16 / 8);
}
osmo_store16le_ext
static void osmo_store16le_ext(uint16_t x, void *p, uint8_t n)
store unaligned n-byte integer (little-endian encoding) from uint16_t
Definition bit16gen.h:76
osmo_store16be
static void osmo_store16be(uint16_t x, void *p)
store unaligned 16-bit integer (big-endian encoding)
Definition bit16gen.h:121
osmo_load16be_ext
static uint16_t osmo_load16be_ext(const void *p, uint8_t n)
load unaligned n-byte integer (big-endian encoding) into uint16_t, into the MOST significant octets.
Definition bit16gen.h:45
osmo_load16be_ext_2
static uint16_t osmo_load16be_ext_2(const void *p, uint8_t n)
load unaligned n-byte integer (big-endian encoding) into uint16_t, into the least significant octets.
Definition bit16gen.h:60
osmo_store16be_ext
static void osmo_store16be_ext(uint16_t x, void *p, uint8_t n)
store unaligned n-byte integer (big-endian encoding) from uint16_t
Definition bit16gen.h:89
osmo_store16le
static void osmo_store16le(uint16_t x, void *p)
store unaligned 16-bit integer (little-endian encoding)
Definition bit16gen.h:115
osmo_load16be
static uint16_t osmo_load16be(const void *p)
load unaligned 16-bit integer (big-endian encoding)
Definition bit16gen.h:108
osmo_load16le
static uint16_t osmo_load16le(const void *p)
load unaligned 16-bit integer (little-endian encoding)
Definition bit16gen.h:102
osmo_load16le_ext
static uint16_t osmo_load16le_ext(const void *p, uint8_t n)
load unaligned n-byte integer (little-endian encoding) into uint16_t, into the least significant octe...
Definition bit16gen.h:28
n
write Write running configuration to or terminal n Write configuration to the copy running config startup Copy configuration n Copy running config to n Copy running config to startup write Write running configuration to or terminal n Write to terminal n
OSMO_ASSERT
#define OSMO_ASSERT(exp)
Helper macro to terminate when an assertion fails.
Definition utils.h:113
x
uint32_t x
Definition jhash.h:0
utils.h