相关疑难解决方法(0)

在下面的Python中,我有五个函数包含在func我必须集成的数组中.代码调用使用f2py以下代码生成的外部Fortran模块:

import numpy as np
from numpy import cos, sin , exp
from trapzdv import trapzdv
def func(x):
    return np.array([x**2, x**3, cos(x), sin(x), exp(x)])

if __name__ == '__main__':
    xs = np.linspace(0.,20.,100)
    ans =  trapzdv(func,xs,5)
    print 'from Fortran:', ans
    print 'exact:', np.array([20**3/3., 20**4/4., sin(20.), -cos(20.), exp(20.)])

Fortran例程是:

      subroutine trapzdv(f,xs,nf,nxs,result)
          integer :: I
          double precision :: x1,x2
          integer, intent(in) :: nf, nxs
          double precision, dimension(nf) :: fx1,fx2
          double precision, intent(in), dimension(nxs) :: xs
          double precision, intent(out), dimension(nf) :: …