查看“IDL中的微分和积分程序”的源代码

==积分==
===内置程序===
*qromb
:using Romberg integration.
*qromo
:using a modified Romberg's method (section 4.4 of Numerical Recipes in C)
*qsimb
:using Simpson's rule

*INT_2D,INT_3D,INT_TABULATED

===astro_lib===
*子程序qsimp，上面内禀的qsimp是函数形式
:该子程序比内禀函数更快，因为用的是数组运算* QTRAP
:可以传递函数的额外变量
* QTRAP
: 函数 Integrate using trapezoidal rule to specified accuracy. (section 4.2 of Numerical Recipes)