| 摘要 |
<p>PURPOSE:To speed up formation processing by contracting the storage array of rotational factors required in the case of attaining fast Fourier transform. CONSTITUTION:This computer system having a vector computing element is provided with a contracting function for attaining algorithm contracting the storage array of the rotational factors required in the case of attaining isogeometric fast Fourier transform by considering the maximum vector length of the vector computer. When the number of elements is '8', respective input elements f0 to f7 are mutually substituted to find out sums and differences and multiplied by the rotational factors to obtain results F0 to F7. Calculation flow can be vectorized and all the rotational factors W0 to W3 in respective steps are required. When the number of identical rotational factors exceeds the maximum number of vector elements of the vector computer, the storage array size of the rotational factors is contracted by storing the value of only one rotational factor correspondingly to the maximum vector length. Consequently the formation processing can be accelerated.</p> |
