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Error function calculation device and error function calculation method
Error function calculation device and error function calculation method
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机译:误差函数计算装置及误差函数计算方法
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摘要
An error function calculation device, which performs processing of calculating an error function FM(T) having T (positive real number) as a variable and M (M is an integer of 0 or more) as an order, includes a coefficient table and a calculation section. The coefficient table stores a value of FM+i(T0)/FM(T0) (i is at least one integer among 1 to n, and n is a natural number) calculated for T0, obtained by an n-th order polynomial approximation of the error function FM(T), or a multiplied value which is obtained by multiplying the value of FM+i(T0)/FM(T0) by a constant. The calculation section reads the value of FM+i(T0)/FM(T0) or the multiplied value from the coefficient table, and performs at least a part of the processing of calculating a value of the error function FM(T) by a fixed-point arithmetic using the value of FM+i(T0)/FM(T0) or the multiplied value.
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机译:误差函数计算装置,进行计算以T(正实数)为变量,M(M为0以上的整数)作为整数的误差函数F M Sub>(T)的处理。顺序包括系数表和计算部分。系数表存储F M + i Sub>(T 0 Sub>)/ F M Sub>(T 0 Sub>)的值通过误差函数F M <的n阶多项式逼近获得的T 0 Sub>计算的(i是1到n中的至少一个整数,n是自然数) / Sub>(T),或者乘以F M + i Sub>(T 0 Sub>)/ F M Sub >(T 0 Sub>)的常量。计算部分读取F M + i Sub>(T 0 Sub>)/ F M Sub>(T 0 Sub>)的值或系数表中的相乘值,并执行使用F 的值通过定点运算来计算误差函数F M Sub>(T)的值的处理的至少一部分。 Sub> M + i Sub>(T 0 Sub>)/ F M Sub>(T 0 Sub>)或乘数值。
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