bytebuffer_append_double()

void bytebuffer_append_double	(	bytebuffer_t *	buf,
		const double	val,
		int	swap
	)

Writes a float64 to the buffer.

Definition at line 311 of file bytebuffer.c.

References bytebuffer_t::buf_start, bytebuffer_makeroom(), LWDEBUG, LWDEBUGF, lwerror(), WKB_DOUBLE_SIZE, and bytebuffer_t::writecursor.

{
        LWDEBUGF(2,"Entered bytebuffer_append_double with value %lf swap = %d", val, swap);

        LWDEBUGF(4,"buf_start = %p and write_cursor=%p", buf->buf_start,buf->writecursor);
        char *dptr = (char*)(&val);
        int i = 0;

        if ( sizeof(double) != WKB_DOUBLE_SIZE )
        {
                lwerror("Machine double size is not %d bytes!", WKB_DOUBLE_SIZE);
        }

        bytebuffer_makeroom(buf, WKB_DOUBLE_SIZE);

        /* Machine/request arch mismatch, so flip byte order */
        if ( swap )
        {
                LWDEBUG(4,"Ok, let's do the swapping thing");
                for ( i = 0; i < WKB_DOUBLE_SIZE; i++ )
                {
                        *(buf->writecursor) = dptr[WKB_DOUBLE_SIZE - 1 - i];
                        buf->writecursor += 1;
                }
        }
        /* If machine arch and requested arch match, don't flip byte order */
        else
        {
                LWDEBUG(4,"Ok, let's do the memcopying thing");
                memcpy(buf->writecursor, dptr, WKB_DOUBLE_SIZE);
                buf->writecursor += WKB_DOUBLE_SIZE;
        }

        LWDEBUG(4,"Return from bytebuffer_append_double");
        return;

}

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