摘要
本文给出正切函数的有理展开和契比协夫展开式系数的加速计算方法;同时在YH-1机上进行了数值试验,结果表明:用现在的系数来计算正切函数,其精度比原来正切函数的精度可提高30%左右。
The rational and Chebyshev approximation polynomials of tangent aregiven.The accelerated computational methods of the Chebyshev coefficientsare also presented.The experimental results on the YH-1 super-computershow that using the coefficients with this accelerated method the accuracycan be increased by 30% compared with the original confficients.
出处
《国防科技大学学报》
EI
CAS
CSCD
北大核心
1990年第4期33-42,共10页
Journal of National University of Defense Technology
关键词
逼近性
函数
契比雪夫逼近
误差
approximation-method
function
absolute error
relative error/numerical evaluation
Chebyshev polynomial
