import std/[strutils, strformat]

proc roundfloat_str(fval: SomeFloat): string =
  strip(&"{fval:.0f}", leading=false, chars={'.'})

proc floatStr(fval: SomeFloat): string =
  strip(&"{fval:f}", leading=false, chars={'.', '0'})

echo &"{123.45:.0f}"        # 123.
echo roundfloat_str(123.45) # 123
echo floatStr(123.45)       # 123.45
echo floatStr(123.0)        # 123