Fuzion • Idioms • Idiom # 81: Round floating point number to integer

Idiom # 81: Round floating point number to integer

Note that the programming idiom states that rounding should be performed with ties to positive infinity.

Code

y := (x + 0.5).floor.as_i64

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y := (x + 0.5).floor.as_i64
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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What are effects?

Example

ex81 =>
  x := -2.5
  y := (x + 0.5).floor.as_i64

  say y         # -2

# there is also round which rounds with ties to away from zero
  say x.round   # -3
  say -x.round  #  3

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ex81 =>
  x := -2.5
  y := (x + 0.5).floor.as_i64
  say y         # -2
# there is also round which rounds with ties to away from zero
  say x.round   # -3
  say -x.round  #  3
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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What are effects?

last changed: 2025-05-13

next: Idiom # 82: Count substring occurrences