Error while using modulus operator in qt on double

Question

I have following code in my qt program :

        lambda = lambda % 360.0  + dphi ;

And I am getting following error while compiling: /home/vijay13/Downloads/app/app/skyobjects/ksmoon.cpp:389: error: invalid operands of types 'double' and 'double' to binary 'operator%'

Can someone please help me get modulus of given double in qt/c++ ?

possible duplicate of [Can't use modulus on doubles?](http://stackoverflow.com/questions/9138790/cant-use-modulus-on-doubles) — MJD, Oct 07 '13 at 20:49

score 4 · Answer 1 · edited May 23 '17 at 10:31

4

This has nothing to with Qt. The fact of the matter is that the % operator can't be applied to double.

For more information, and a possible solution, see: Can't use modulus on doubles?

edited May 23 '17 at 10:31

Community

1
1

answered Oct 07 '13 at 20:44

CmdrMoozy

3,730
18
28

score 1 · Answer 2 · answered Oct 07 '13 at 20:56

1

This is because built in % is for integers. You can use fmod from cmath library for non-integers.

answered Oct 07 '13 at 20:56

tomi.lee.jones

1,523
1
15
22

Error while using modulus operator in qt on double

2 Answers2