operations with dates in autolisp

[acitano]

Bye to all,
Would someone tell me if there's any lisp routine around the world that allows me to do dates?
for example difference in days between two dates such as vb or vba datediff function

hi acitano:smile:

 

[rpor66]

written jet, call back the function by passing the date (gg/mm/aaaa) and return the serial of the date, practically the number of days from 01/01/1900.

bye

 

[acitano]

thank you so much rpor66,
I'll try to get your lisp in my program tonight.

bye acitano

 

[confutatis]

I apologize to rpor66, not to do the puzzle and the exact exaggerated but 1900 was not bisexual, so from the total compute of the days you have to take one, if we consider a date back to 28/02/1900.

 

[rpor66]

what is right is right.
However the file attached with correction is + nice my one:biggrin:

bye

 

[confutatis]

in this way starts from 1/1/1900 already with 366 days instead of 1 and 1/1/1901 again 366...:biggrin::biggrin::biggrin: