$(-0.0) prints as -0.0; should that print as 0.0?

[timotheecour]

$(-0.0) prints as -0.0; should that print as 0.0?

Example

proc main()=
  var a = -0.0
  echo a
  echo -0
  echo $(-0.0)
  var b = a
  echo b
  echo cast[uint](a)

static: main()
main()

Current Output

-0.0
0
-0.0
-0.0
9223372036854775808

Expected Output

• unclear whether we should print -0.0 as 0.0

Additional information

• potentially an issue if 0.0==-0.0 but their $ is different
• related: hashes.hash returns same hash for both
• nim js inconsistent with nim c,vm
• see nimFloatToString in $(a: float) now works consistently in nim js, avoiding printing floats as ints nim-lang/Nim#14134
• TODO: look at how other PL do
• 9384f7a
• D20200426T193533

[ringabout]

It differs in JS backend

proc main()=
  var a = -0.0
  echo a
  echo -0
  echo $(-0.0)
  var b = a
  echo b

static: main()
main()

output:

-0.0
0
-0.0
-0.0

0.0
0
-0.0
0.0

[timotheecour]

fixed by nim-lang#16505 ; thanks!