Endian.h

Go to the documentation of this file.

#ifndef ENDIAN_H
#define ENDIAN_H

#include <stdint.h>
namespace Endian {
    inline static int endianTest() {
        int16_t i = 1;
        return *(char *)&i;
    }
    inline int16_t get16LE(void const* buffer) {
        unsigned char const* buf = static_cast<unsigned char const*>(buffer);
        return (buf[1] << 8) + buf[0];
    }

    inline uint16_t getU16LE(void const* buffer) {
        unsigned char const* buf = static_cast<unsigned char const*>(buffer);
        return (buf[1] << 8) + buf[0];
    }
    inline int32_t get32LE(void const* buffer) {
        unsigned char const* buf = static_cast<unsigned char const*>(buffer);
        return (buf[3] << 24) + (buf[2] << 16) + (buf[1] << 8) + buf[0];
    }

    inline uint32_t getU32LE(void const* buffer) {
        unsigned char const* buf = static_cast<unsigned char const*>(buffer);
        return (buf[3] << 24) + (buf[2] << 16) + (buf[1] << 8) + buf[0];
    }

    inline float getFloatLE(void const* buffer) {
        union {
            char b[4];
            float f;
        } u;
        unsigned char const* buf = static_cast<unsigned char const*>(buffer);
        if (endianTest()) {
            for (int i = 0; i < 4; i++) {
                u.b[i] = buf[i];
            }
        } else {
            for (int i = 0; i < 4; i++) {
                u.b[3-i] = buf[i];
            }

        }
        return u.f;
    }

    inline double getDoubleLE(void const* buffer) {
        union {
            char b[8];
            double f;
        } u;
        unsigned char const* buf = static_cast<unsigned char const*>(buffer);
        if (endianTest()) {
            for (int i = 0; i < 8; i++) {
                u.b[i] = buf[i];
            }
        } else {
            for (int i = 0; i < 8; i++) {
                u.b[7 - i] = buf[i];
            }

        }
        return u.f;
    }

    inline int16_t get16BE(void const* buffer) {
        unsigned char const* buf = static_cast<unsigned char const*>(buffer);
        return (buf[0] << 8) + buf[1];
    }

    inline uint16_t getU16BE(void const* buffer) {
        unsigned char const* buf = static_cast<unsigned char const*>(buffer);
        return (buf[0] << 8) + buf[1];
    }

    inline int32_t get32BE(void const* buffer) {
        unsigned char const* buf = static_cast<unsigned char const*>(buffer);
        return (buf[0] << 24) + (buf[1] << 16) + (buf[2] << 8) + buf[3];
    }

    inline uint32_t getU32BE(void const* buffer) {
        unsigned char const* buf = static_cast<unsigned char const*>(buffer);
        return (buf[0] << 24) + (buf[1] << 16) + (buf[2] << 8) + buf[3];
    }

    inline float getFloatBE(void const* buffer) {
        union {
            char b[4];
            float f;
        } u;
        unsigned char const* buf = static_cast<unsigned char const*>(buffer);
        if (endianTest()) {
            for (int i = 0; i < 4; i++) {
                u.b[3 - i] = buf[i];
            }
        } else {
            for (int i = 0; i < 4; i++) {
                u.b[i] = buf[i];
            }

        }
        return u.f;

    }

    inline double getDouble(void const* buffer) {
        union {
            char b[8];
            double f;
        } u;
        unsigned char const* buf = static_cast<unsigned char const*>(buffer);
        if (endianTest()) {
            for (int i = 0; i < 8; i++) {
                u.b[7 - i] = buf[i];
            }
        } else {
            for (int i = 0; i < 8; i++) {
                u.b[i] = buf[i];
            }

        }
        return u.f;
    }
};

#endif