ion_floating-point_format">IEEE
  754 quadruple-precision(QP) floating-point numbers</a>. If the
  compiler natively supports IEEE 754 QP FP type, numbers in this
  natively supported QP data type can be directly passed to the
  library functions. Otherwise, the library defines a data type for
  retaining numbers in IEEE 754 QP data type.
</p>

<p>
  Many of the functions are fully vectorized to maximize the
  throughput of computation. For these functions, two vector registers
  are combined to retain a ve