2019-10-30 Windows上使用gfortran调用mkl函数库

http://blog.sina.com.cn/s/blog_62c832270101eo60.html

https://www.jianshu.com/p/19b6973a0a73

https://www.jianshu.com/p/0134dec32aa6

有效数字

Program main

    implicit none

    real*16 a

    a=1.d0/3.d0

    print*,precision(a),epsilon(a)

End Program