byteswap.h

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#pragma once
#include <stdint.h>
#include <osmocom/core/endian.h>

static inline uint32_t osmo_swab32(uint32_t in)
{
        uint32_t out;
 
        out = (in & 0xff) << 24;
        out |= (in & 0xff00) << 8;
        out |= (in & 0xff0000) >> 8;
        out |= (in & 0xff000000) >> 24;
 
        return out;
}

static inline uint16_t osmo_swab16(uint16_t in)
{
        uint16_t out;
 
        out = (in & 0xff) << 8;
        out |= (in & 0xff00) >> 8;
 
        return out;
}
 
#if OSMO_IS_LITTLE_ENDIAN == 1
#define osmo_ntohl(x)   osmo_swab32(x)
#define osmo_ntohs(x)   osmo_swab16(x)
#define osmo_htonl(x)   osmo_swab32(x)
#define osmo_htons(x)   osmo_swab16(x)
#else
#define osmo_ntohl(x)   (x)
#define osmo_ntohs(x)   (x)
#define osmo_htonl(x)   (x)
#define osmo_htons(x)   (x)
#endif