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[[-floor(3/2)]] results in an SyntaxError

  1. Community Forums
  2. Bug Reports & Technical Issues
  3. [[-floor(3/2)]] results in an SyntaxError
  4. Resolved
1435233590

Edited 1435233615
Wandler
Pro
Permalink for 2113390 Quote
[[0-floor(3/2)]] works. This is a short post, but it actually reports the bug with all details :)
1435249250
Yan Kodiac
Pro
Permalink for 2113927 Quote
We don't have a -floor() function. It returns a number so that is why it works with the 0-floor(3/2). I don't believe this is an actual bug per say but I'll see if it is something we can change. Another version that will work would be this: [[floor(3/2)*-1]]. Thanks for the report!
1435258960
The Aaron
Roll20 Production Team
API Scripter
Permalink for 2114500 Quote
Another alternative that might work for you: [[ceil(-3/2)]] See: <a href="https://wiki.roll20.net/Dice_Reference#Rounding_Ro" rel="nofollow">https://wiki.roll20.net/Dice_Reference#Rounding_Ro</a>...
1435263709
Kryx
Pro
Sheet Author
API Scripter
Permalink for 2114780 Quote
It actually does work in JavaScript - to my surprise. You can try it in the console: Math.floor(3/2) 1 -Math.floor(3/2) -1
1435264334

Edited 1435264432
The Aaron
Pro
API Scripter
Permalink for 2114812 Quote
It's a lexer issue in the expression parser. Negation expects the next character to be a number: SyntaxError: Expected [0-9] but "f" found. You get similar results if you attempt double negation: [[--1]] SyntaxError: Expected [0-9] but "-" found. Or a negating parenthetical expression: [[ -(3) ]] SyntaxError: Expected [0-9] but "(" found.
1435276108
Lithl
Pro
Sheet Author
API Scripter
Permalink for 2115463 Quote
Mark said: It actually does work in JavaScript - to my surprise. You can try it in the console: Math.floor(3/2) 1 -Math.floor(3/2) -1 That's because JavaScript has a more robust expression parser than Roll20 does.