gusucode.com > symbolic工具箱matlab源码程序 > symbolic/@single/ssinint.m
function y = ssinint(x) % SSININT The shifted sine integral % SSININT(X) represents the shifted sine integral sinint(X)-pi/2. It % returns the special values: % % ssinint(0) = -pi/2, % ssinint(inf) = 0, % ssinint(-inf) = -pi. % % The reflection rule ssinint(x) = -ssinint(-x)-pi is used if the % argument is a negative integer or a negative rational number. It is % also used if the argument is a symbolic product involving such a % factor. % % See also SIN, SINH, SININT, SINHINT. % Copyright 2013 The MathWorks, Inc. y = sym.useSymForNumeric(@ssinint, x);