Editing Idiom 80 : Truncate floating point number to integer

Idiom

# 80 Truncate floating point number to integer

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Lead paragraph

Declare integer _y and initialize it with the value of floating point number _x . Ignore non-integer digits of _x . 
Make sure to truncate towards zero: a negative _x must yield the closest greater integer (not lesser).

Implementation

Language

Ruby

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Last edited by

Imports

Code

y = x.to_i

Documentation URL

Original attribution URL

Online demo

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Other implementations

int y = (int)x;

Demo

y = trunc(x)

Demo
Doc

int y = cast(int)x;

y = truncate x

let y = x as i32;

Demo

var
  y: integer;
  x: single = -0.8;
begin
  y := trunc(x);
end;

Demo

int y = x.toInt()

y = int(x)

y := int(x)

Demo
Doc

my $y = int($x);

$y = (int)$x;

y = math.modf(x)

int y = (int)x;

Preview