read_float64()

double read_float64	(	const uint8_t **	from,
		uint8_t	littleEndian
	)

Definition at line 389 of file rt_serialize.c.

                                                         {
 
    union {
        double d;
        uint64_t i;
    } ret;
 
    assert(NULL != from);
 
    if (littleEndian) {
        ret.i = (uint64_t) ((*from)[0] & 0xff) |
                (uint64_t) ((*from)[1] & 0xff) << 8 |
                (uint64_t) ((*from)[2] & 0xff) << 16 |
                (uint64_t) ((*from)[3] & 0xff) << 24 |
                (uint64_t) ((*from)[4] & 0xff) << 32 |
                (uint64_t) ((*from)[5] & 0xff) << 40 |
                (uint64_t) ((*from)[6] & 0xff) << 48 |
                (uint64_t) ((*from)[7] & 0xff) << 56;
    } else {
        /* big endian */
        ret.i = (uint64_t) ((*from)[7] & 0xff) |
                (uint64_t) ((*from)[6] & 0xff) << 8 |
                (uint64_t) ((*from)[5] & 0xff) << 16 |
                (uint64_t) ((*from)[4] & 0xff) << 24 |
                (uint64_t) ((*from)[3] & 0xff) << 32 |
                (uint64_t) ((*from)[2] & 0xff) << 40 |
                (uint64_t) ((*from)[1] & 0xff) << 48 |
                (uint64_t) ((*from)[0] & 0xff) << 56;
    }
 
    *from += 8;
    return ret.d;
}

Referenced by rt_band_from_wkb(), rt_raster_deserialize(), and rt_raster_from_wkb().

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