C++ (Cpp) next_float_up Examples

Example #1

File: spgist.c Project: ahinz/postgis

static inline int box2df_from_gbox_p(GBOX *box, BOX2DF *a)
{
	a->xmin = next_float_down(box->xmin);
	a->xmax = next_float_up(box->xmax);
	a->ymin = next_float_down(box->ymin);
	a->ymax = next_float_up(box->ymax);
	return LW_SUCCESS;
}

Example #2

File: g_box.c Project: dengxuyue/postgresql

int gbox_same_2d_float(const GBOX *g1, const GBOX *g2)
{
  if  ((g1->xmax == g2->xmax || next_float_up(g1->xmax)   == next_float_up(g2->xmax))   &&
       (g1->ymax == g2->ymax || next_float_up(g1->ymax)   == next_float_up(g2->ymax))   &&
       (g1->xmin == g2->xmin || next_float_down(g1->xmin) == next_float_down(g1->xmin)) &&
       (g1->ymin == g2->ymin || next_float_down(g2->ymin) == next_float_down(g2->ymin)))
      return LW_TRUE;
  return LW_FALSE;
}

Example #3

File: gserialized_gist.c Project: NianYue/pipelinedb

/* Convert a double-based GBOX into a float-based GIDX,
   ensuring the float box is larger than the double box */
static int gidx_from_gbox_p(GBOX box, GIDX *a)
{
	int ndims;

	ndims = FLAGS_NDIMS_GIDX(box.flags);
	SET_VARSIZE(a, VARHDRSZ + ndims * 2 * sizeof(float));

	GIDX_SET_MIN(a,0,next_float_down(box.xmin));
	GIDX_SET_MAX(a,0,next_float_up(box.xmax));
	GIDX_SET_MIN(a,1,next_float_down(box.ymin));
	GIDX_SET_MAX(a,1,next_float_up(box.ymax));

	/* Geodetic indexes are always 3d, geocentric x/y/z */
	if ( FLAGS_GET_GEODETIC(box.flags) )
	{
		GIDX_SET_MIN(a,2,next_float_down(box.zmin));
		GIDX_SET_MAX(a,2,next_float_up(box.zmax));
	}
	else
	{
		/* Cartesian with Z implies Z is third dimension */
		if ( FLAGS_GET_Z(box.flags) )
		{
			GIDX_SET_MIN(a,2,next_float_down(box.zmin));
			GIDX_SET_MAX(a,2,next_float_up(box.zmax));
		}
		/* M is always fourth dimension, we pad if needed */
		if ( FLAGS_GET_M(box.flags) )
		{
			if ( ! FLAGS_GET_Z(box.flags) )
			{
				GIDX_SET_MIN(a,2,-1*FLT_MAX);
				GIDX_SET_MAX(a,2,FLT_MAX);
			}
			GIDX_SET_MIN(a,3,next_float_down(box.mmin));
			GIDX_SET_MAX(a,3,next_float_up(box.mmax));
		}
	}

	POSTGIS_DEBUGF(5, "converted %s to %s", gbox_to_string(&box), gidx_to_string(a));

	return LW_SUCCESS;
}

Example #4

File: g_box.c Project: ahinz/postgis

void gbox_float_round(GBOX *gbox)
{
	gbox->xmin = next_float_down(gbox->xmin);
	gbox->xmax = next_float_up(gbox->xmax);

	gbox->ymin = next_float_down(gbox->ymin);
	gbox->ymax = next_float_up(gbox->ymax);

	if ( FLAGS_GET_M(gbox->flags) )
	{
		gbox->mmin = next_float_down(gbox->mmin);
		gbox->mmax = next_float_up(gbox->mmax);
	}

	if ( FLAGS_GET_Z(gbox->flags) )
	{
		gbox->zmin = next_float_down(gbox->zmin);
		gbox->zmax = next_float_up(gbox->zmax);
	}
}

Example #5

File: g_serialized.c Project: NianYue/pipelinedb

static size_t gserialized_from_gbox(const GBOX *gbox, uint8_t *buf)
{
	uint8_t *loc = buf;
	float f;
	size_t return_size;

	assert(buf);

	f = next_float_down(gbox->xmin);
	memcpy(loc, &f, sizeof(float));
	loc += sizeof(float);

	f = next_float_up(gbox->xmax);
	memcpy(loc, &f, sizeof(float));
	loc += sizeof(float);

	f = next_float_down(gbox->ymin);
	memcpy(loc, &f, sizeof(float));
	loc += sizeof(float);

	f = next_float_up(gbox->ymax);
	memcpy(loc, &f, sizeof(float));
	loc += sizeof(float);

	if ( FLAGS_GET_GEODETIC(gbox->flags) )
	{
		f = next_float_down(gbox->zmin);
		memcpy(loc, &f, sizeof(float));
		loc += sizeof(float);

		f = next_float_up(gbox->zmax);
		memcpy(loc, &f, sizeof(float));
		loc += sizeof(float);

		return_size = (size_t)(loc - buf);
		LWDEBUGF(4, "returning size %d", return_size);
		return return_size;
	}

	if ( FLAGS_GET_Z(gbox->flags) )
	{
		f = next_float_down(gbox->zmin);
		memcpy(loc, &f, sizeof(float));
		loc += sizeof(float);

		f = next_float_up(gbox->zmax);
		memcpy(loc, &f, sizeof(float));
		loc += sizeof(float);

	}

	if ( FLAGS_GET_M(gbox->flags) )
	{
		f = next_float_down(gbox->mmin);
		memcpy(loc, &f, sizeof(float));
		loc += sizeof(float);

		f = next_float_up(gbox->mmax);
		memcpy(loc, &f, sizeof(float));
		loc += sizeof(float);
	}
	return_size = (size_t)(loc - buf);
	LWDEBUGF(4, "returning size %d", return_size);
	return return_size;
}