cr_circle(PG_FUNCTION_ARGS)
{
	Point	   *center = PG_GETARG_POINT_P(0);
	float8		radius = PG_GETARG_FLOAT8(1);
	CIRCLE	   *result;

	result = (CIRCLE *) palloc(sizeof(CIRCLE));

	result->center.x = center->x;
	result->center.y = center->y;
	result->radius = radius;

	PG_RETURN_CIRCLE_P(result);
}

This weakness involves numeric computation errors, such as integer overflows, underflows, or precision losses, which can lead to miscalculations and exploitable behaviors in software.